CPC Practice Exam
159 free CPC practice questions with answers and explanations.
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The CPC exam is administered by AAPC, with 100 scored questions, a time limit of 4 hours and a passing score of 70%.
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These are original study questions written from published exam objectives—not recalled, copied, or confidential live-exam items. Always confirm current coverage with the official sources linked on this page.
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Coding Systems: ICD-10-CM, CPT and HCPCS
1 question1. When a clinical documentation specifies that a procedure was performed, which coding system should the coder select to describe the specific procedure and its technical components?
- A. CPT, which describes specific procedures, services, and technical components
- B. ICD-10-PCS, which reports procedures performed during inpatient hospital admissions
- C. ICD-10-CM, which classifies the diagnoses, symptoms and reasons for the encounter
- D. HCPCS Level II, which reports supplies, drugs and equipment not described in CPT
Show answer & explanation
Answer: A
CPT codes are the primary system for describing procedures, services, and evaluation performed in outpatient settings; they identify what was done and how. ICD-10-CM codes diagnoses and reasons for the encounter, not the procedures themselves. HCPCS Level II supplements CPT for items and services not addressed in CPT. ICD-10-PCS applies to inpatient hospital procedures, not outpatient services covered by CPT.
HCPCS Level II
4 questions2. A coder is selecting a code for a supply item not found in the CPT codebook. Where should the coder look for the appropriate code?
- A. ICD-10-CM, whose Chapter 21 Z codes describe the equipment and supplies furnished to the patient
- B. HCPCS Level II, which is designed to identify supplies, equipment, and services not included in CPT
- C. CPT code 99070 (supplies and materials), which reports any supply item that has no specific CPT code
- D. The payer's local coverage policy, which assigns a proprietary item number for each supply dispensed
Show answer & explanation
Answer: B
HCPCS Level II codes exist specifically to identify supplies, equipment, orthotic devices, and services not included in the CPT system. ICD-10-CM is for diagnoses, not supplies. While CPT unlisted codes exist, they are not the first choice when a specific HCPCS Level II code is available. Insurance policies may vary, but the standard coding reference is the HCPCS system.3. A HCPCS J code is defined as "injection, drug X, 10 mg." The provider documents administration of 30 mg. How many units are reported?
- A. 3 units
- B. 1 unit
- C. 30 units
- D. 10 units
Show answer & explanation
Answer: A
Divide the documented dose by the code's billing unit: 30 mg divided by the 10 mg unit equals 3 units. Reporting the milligram amount as the unit count, a frequent error, would bill ten times the correct quantity and is exactly the pattern medically unlikely edits are designed to catch.4. Which HCPCS Level II code category reports drugs administered other than by the oral method?
- A. The A codes
- B. The L codes
- C. The J codes
- D. The E codes
Show answer & explanation
Answer: C
J codes report injectable and infused drugs and identify both the substance and the billing unit, so the documented dose must be converted to units before reporting. E codes cover durable medical equipment, A codes cover transportation and medical supplies, and L codes cover orthotics and prosthetics.5. A coder is assigning a code for a piece of durable medical equipment supplied to a patient at home. Which characteristic identifies a valid HCPCS Level II code for this item?
- A. Three alphabetic characters followed by two numeric digits
- B. A three-to-seven character code with a decimal point
- C. One alphabetic character followed by four numeric digits
- D. Five numeric digits, the same format used by CPT codes
Show answer & explanation
Answer: C
HCPCS Level II codes are alphanumeric, consisting of a single letter followed by four numbers, which distinguishes them from the five-digit numeric CPT codes used for physician services; recognizing this format helps a coder quickly identify the correct code set for supplies, equipment, and drugs.
ICD-10-CM
20 questions6. Which principle explains why an ICD-10-CM excludes note indicates that two conditions should not be coded together for a single encounter?
- A. Insurance carriers have determined that only one of the two conditions can be treated at a single encounter
- B. The second condition is a manifestation that is always captured by the first code and needs no separate entry
- C. The conditions represent mutually exclusive clinical presentations that should not coexist in the same patient
- D. Coding both conditions would duplicate the same clinical concept and inflate the reported severity of the encounter
Show answer & explanation
Answer: C
Excludes notes in ICD-10-CM indicate that two conditions are mutually exclusive clinically and should not be coded together because they cannot logically occur simultaneously in the same patient. These notes are based on medical logic and concept definitions, not reimbursement rules or severity hierarchy. A patient could be treated for multiple conditions in one visit, but the excludes note prevents coding incompatible diagnoses that cannot coexist.7. A coder must apply the 'Code First' instruction found in the ICD-10-CM tabular list for one of the patient's conditions. What does this coding convention require?
- A. The specified underlying condition must be coded before the condition listed under the 'Code First' note
- B. The condition carrying the note must appear first on the claim so the payer adjudicates it as the primary diagnosis
- C. The provider must document and treat the underlying condition before the manifestation can be reported at all
- D. Only the underlying condition is reported, because the manifestation is already captured within its code
Show answer & explanation
Answer: A
A 'Code First' instruction indicates that an underlying or related condition must be sequenced (listed) before the code with the note. This ensures that the causal or foundational condition is identified first, followed by the manifestation or secondary condition. The 'Code First' note does not mean it must be submitted first to the insurer—sequencing refers to the order of codes on the claim form. Both conditions are coded; the 'Code First' note only specifies the correct order.8. When the alphabetic index and the tabular list appear to conflict in ICD-10-CM, which governs?
- A. The tabular list, though both must always be consulted
- B. The payer's internal policy, which supersedes both references
- C. The alphabetic index, because every code search begins there
- D. Whichever of the two produces the more specific code
Show answer & explanation
Answer: A
Coding begins in the alphabetic index to locate a candidate code and is verified in the tabular list, which carries the instructional notes, inclusion and exclusion terms and character requirements that determine the final code. Never code directly from the index, and payment consequences never drive code selection.9. In ICD-10-CM, what does the instructional note "Excludes1" indicate about the two codes it links?
- A. The excluded code must be sequenced first whenever both conditions are present
- B. The two conditions are mutually exclusive and may never be reported together
- C. The two conditions may be reported together whenever both are documented by the provider
- D. The excluded code is a synonym that may be substituted when the primary code is unavailable
Show answer & explanation
Answer: B
Excludes1 means not coded here: the two conditions cannot coexist and reporting both is a coding error unless the two conditions are genuinely unrelated per the guideline exception. Excludes2 means not included here, indicating the excluded condition is separate and may be reported additionally when documented.10. A physician documents "probable pneumonia" for an outpatient office visit. How should this be coded?
- A. Code pneumonia as if it were confirmed, because the outpatient guideline treats 'probable' as established
- B. Code both pneumonia and the presenting symptoms, sequencing the symptoms first as the reason for the visit
- C. Report no diagnosis code for the visit until the chest X-ray confirms or rules out the pneumonia
- D. Code the signs and symptoms, because uncertain diagnoses are not coded in the outpatient setting
Show answer & explanation
Answer: D
The outpatient guideline prohibits coding probable, suspected, questionable or rule-out conditions as if they existed; the coder reports the documented signs, symptoms or abnormal findings instead. Inpatient coding takes the opposite approach, coding an uncertain diagnosis documented at discharge as if established.11. Which ICD-10-CM convention indicates that an additional code is required and specifies its sequencing?
- A. The order of the chapters in the tabular list, which requires codes from earlier chapters to be listed first
- B. The presence of a placeholder 'X' in the fifth position, which signals that a companion code must follow
- C. The order of the subterms under the main term in the alphabetic index, which fixes the sequence of codes on the claim
- D. "Code first" and "use additional code" notes, which establish mandatory etiology and manifestation sequencing
Show answer & explanation
Answer: D
Code first identifies an underlying condition that must be sequenced ahead, and use additional code identifies a manifestation or related condition reported afterward. Together they enforce etiology-then-manifestation sequencing. Codes in italics or with brackets in the index signal the same mandatory pairing.12. What is the purpose of the placeholder character "X" in an ICD-10-CM code?
- A. It marks the code as unspecified so the payer knows that laterality was not documented
- B. It stands in for any character the coder cannot determine from the available documentation
- C. It fills an empty character position so a required seventh character lands in the correct place
- D. It flags the code as non-billable until the placeholder is replaced with a documented character
Show answer & explanation
Answer: C
Some codes require a seventh character but have fewer than six meaningful characters, so X is inserted to hold the intervening positions. Omitting the placeholder produces an invalid code. It is not a wildcard for unknown information and does not signal an unspecified or non-billable code.13. A patient returns for a scheduled follow-up during the healing phase of a fracture treated at the initial encounter. Which seventh character generally applies?
- A. S, for sequela
- B. No seventh character is used for follow-up visits
- C. D, for subsequent encounter
- D. A, for initial encounter
Show answer & explanation
Answer: C
The seventh character distinguishes A for active treatment, D for routine healing or recovery care, and S for a sequela, meaning a condition resulting from a previous injury. The distinction turns on the type of care, not on whether this is literally the first visit, so a second visit that involves active treatment still uses A.14. A patient has a malignant neoplasm of the colon that has metastasized to the liver. How are the sites generally sequenced when treatment is directed at the metastatic site?
- A. Only the metastatic site is reported, because a primary that has already spread is no longer coded as an active condition
- B. The metastatic site is sequenced first when treatment is directed at it, with the primary site reported additionally
- C. The primary site is always sequenced first regardless of which site is being treated, with the secondary site listed next
- D. Only the primary site is reported, because the metastasis is captured by the histology of the primary neoplasm code
Show answer & explanation
Answer: B
Sequencing in neoplasm coding follows the focus of treatment for the encounter. When care targets the secondary site, that code is first with the primary reported additionally, and when care targets the primary the order reverses. Encounters solely for chemotherapy or radiation sequence the treatment code first regardless of site.15. A diagnosis code is reported at a less specific level than the documentation supports. What is the consequence?
- A. It is preferred, because unspecified codes are safer in an audit than a more specific code that could be challenged
- B. It has no effect on claim adjudication, since payers reimburse the category and not the individual code
- C. It automatically triggers a fraud investigation, because reporting less specificity is treated as intentional
- D. It fails the requirement to code to the highest level of specificity documented and may cause denials
Show answer & explanation
Answer: D
Codes must be assigned to the highest level of specificity the documentation supports, including laterality and episode of care where required. Unspecified codes are appropriate only when the record genuinely lacks the detail, and defaulting to them where detail exists causes denials and distorts quality reporting.16. A patient is seen for a condition and the record documents both an acute and a chronic form of the same condition, with separate entries in the index. How are they sequenced?
- A. The acute or subacute code is sequenced first
- B. The chronic code is sequenced first as the underlying condition
- C. Only the chronic code is reported, since it includes the acute form
- D. Only the acute code is reported, since it reflects the current visit
Show answer & explanation
Answer: A
When separate subentries exist for acute or subacute and chronic forms of a condition and both are documented, both codes are reported with the acute or subacute sequenced first. This guideline applies only where the index actually provides separate subentries at the same indentation level.17. Which sequencing rule applies when a patient is admitted or seen for treatment of a complication of surgery?
- A. The original surgical diagnosis is always sequenced first, with the complication reported second
- B. Complications are never coded separately, because they are included in the global surgical package
- C. The complication code is sequenced first when it is the reason for the encounter
- D. The complication is reported only as a secondary code, after the code for the original surgery
Show answer & explanation
Answer: C
The condition established as the reason for the encounter is the first-listed diagnosis, so when the encounter exists to treat a complication, that code leads. Many complication codes also carry a use additional code instruction to specify the complication further, which must be followed for a complete picture.18. A radiology report documents an injury to the patient's right wrist, and the ICD-10-CM classification offers laterality-specific codes for this condition (right, left, unspecified). Given the clear documentation, which code should the coder select?
- A. The bilateral wrist injury code
- B. The right-side-specific code
- C. The unspecified-laterality code
- D. The left-side-specific code
Show answer & explanation
Answer: B
ICD-10-CM requires assigning the most specific code supported by documentation, and because the physician clearly documented the right side, the coder must select the right-side-specific code rather than defaulting to unspecified, which is reserved for cases where the record does not indicate laterality.19. A patient's record documents type 2 diabetes mellitus with a specified diabetic complication, and ICD-10-CM classifies this relationship using a single code capturing both the underlying disease and the complication. What coding principle does this represent?
- A. An Excludes1 conflict that requires the coder to report the diabetes code and omit the complication
- B. A default code assigned when the documentation does not specify which complication the patient has
- C. A dual coding requirement that mandates two separate codes, one for the disease and one for the complication
- D. A combination code that classifies the underlying disease together with its associated complication
Show answer & explanation
Answer: D
ICD-10-CM sometimes provides a single combination code that captures both an underlying condition and an associated complication, such as diabetes with a specified complication, eliminating the need to report two separate codes for the linked conditions; this differs from an excludes1 note, which prohibits reporting two codes together at all.20. In the ICD-10-CM Alphabetic Index, a main term is followed by a code with no additional qualifying subterms matching the documented condition. What does this code represent when no more specific information is documented?
- A. The default code, appropriate when the record does not specify a more detailed variant
- B. A code reserved for inpatient use, because outpatient claims must always carry the full detail
- C. A code that can never be reported without first querying the physician for the missing detail
- D. A placeholder that must be replaced with a more specific code before the claim can be submitted
Show answer & explanation
Answer: A
The default code listed after a main term reflects the condition most commonly associated with that term when documentation does not specify a more detailed type; it may be reported as-is unless the record provides additional detail directing the coder to a different, more specific subterm.21. The ICD-10-CM index instructs the coder to interpret the word 'with' in a code title or index entry as meaning the two listed conditions are associated, even without the physician explicitly linking them elsewhere in the record. What does this convention allow the coder to do?
- A. Ignore the second condition entirely, because the combination code already reports it and a separate code would be a duplicate
- B. Query the physician before every use of a combination code, because the classification cannot establish a relationship on its own
- C. Link the two conditions listed together in the classification without requiring the provider to explicitly state a causal relationship
- D. Assume that any condition listed in the patient's past history is related to the primary diagnosis, even without current documentation of either
Show answer & explanation
Answer: C
The 'with' convention in ICD-10-CM directs coders to interpret the classification's own linkage as sufficient, meaning the coder may assign a combination code for the listed conditions without needing separate provider documentation stating one caused the other, unless the classification specifies otherwise or the provider documents the conditions are unrelated.22. When coding a patient encounter, the ICD-10-CM chapter-specific coding guideline for a particular condition appears to conflict with a general coding guideline that would otherwise apply. Which guideline takes precedence?
- A. The general guideline always overrides chapter-specific guidance, since it applies to every chapter
- B. The coder should default to the alphabetic index alone and disregard both guidelines
- C. The chapter-specific guideline takes precedence over the general guideline
- D. The physician's stated preference determines which of the two guidelines applies
Show answer & explanation
Answer: C
ICD-10-CM Official Guidelines establish that when a chapter-specific guideline provides direction that differs from a general guideline, the more specific chapter-based guidance governs the coding decision for that condition, since it was developed to address nuances unique to that body system or condition category.23. A coder must decide the sequencing of codes for an encounter. Which consideration most directly determines which diagnosis is listed first?
- A. The alphabetical order of the diagnosis descriptions as they appear in the index
- B. The condition chiefly responsible for the encounter as supported by documentation
- C. The diagnosis with the longest code, because more characters indicate greater specificity
- D. The diagnosis that carries the highest reimbursement under the payer's fee schedule
Show answer & explanation
Answer: B
Sequencing is driven by the condition chiefly responsible for the encounter as documented, not by alphabetization, code length, or reimbursement. This is a reasoning-based coding principle.24. When abstracting a diagnosis from a physician's documentation, a coder encounters a condition described only as 'possible' or 'probable' in the outpatient record. In outpatient coding, how should such an uncertain diagnosis generally be handled?
- A. Code the condition as if it were confirmed, to capture the highest level of specificity available
- B. Code the documented signs, symptoms, or findings rather than the unconfirmed condition
- C. Omit the encounter from coding entirely until the physician confirms or rules out the condition
- D. Query the payer for permission to report the possible diagnosis as an established condition
Show answer & explanation
Answer: B
In the outpatient setting, conditions documented as uncertain are not coded as confirmed; instead the coder reports the established signs, symptoms, or findings. Coding an unconfirmed condition as definite would misrepresent the record.25. A coder reviewing documentation for a patient with diabetes must determine whether the record supports type 1 or type 2 classification before assigning a code, since long-term management differs significantly between the two forms. Which documentation element most directly resolves this distinction for coding purposes?
- A. The patient's stated preference for a particular insulin brand
- B. The physician's specific documentation of the diabetes type
- C. The patient's age alone, since age always determines the type
- D. The billing department's default assignment
Show answer & explanation
Answer: B
Diabetes type must be based on the provider's clinical documentation rather than assumptions about patient age, since adults can be diagnosed with type 1 diabetes and children can be diagnosed with type 2; the coder must find or query for explicit documentation of the diabetes type before assigning the corresponding code, because coding based on age alone can result in an inaccurate diagnosis.
Coding Guidelines
17 questions26. A coder is applying a modifier to a CPT code. Which of the following best describes the primary purpose of using modifiers in procedural coding?
- A. To reduce the number of separate codes needed on a claim by combining related services under one code
- B. To indicate to the payer that the procedure was performed incorrectly or outside the standard of care
- C. To increase the reimbursement for the procedure by signaling that additional physician work was performed
- D. To provide additional information that clarifies or changes the meaning of the base procedure code
Show answer & explanation
Answer: D
Modifiers provide additional information about the circumstances, location, or extent of a procedure that changes or clarifies the meaning of the base code—for example, indicating that a procedure was bilateral or performed on the left side. While some modifiers may affect reimbursement as a consequence of accurate coding, that is not their primary purpose. Modifiers do not reduce code counts or indicate errors; they enhance specificity.27. A coder selects a CPT code for a procedure with multiple components (e.g., evaluation, preparation, and execution). The CPT descriptor for the code states 'includes.' What does this convention tell the coder?
- A. The components listed are optional and may be reported separately with modifier 51 when each is performed
- B. The components listed are add-on services that increase the total reimbursement when they are documented
- C. The provider may choose to report the components separately or bundled, depending on the payer's policy
- D. The components listed are included in the code value and should not be separately reported
Show answer & explanation
Answer: D
When the CPT descriptor uses 'includes,' it means that specific components of the service are bundled into that single code and should not be separately reported. This prevents unbundling and ensures accurate reimbursement for the complete service. The 'includes' language is prescriptive, not optional; the coder must follow it to comply with coding conventions. Components are not optional, and attempting to report them separately would violate NCCI edits and coding rules.28. A CPT code description is preceded by a bullet symbol in the codebook. What does this indicate?
- A. The code is exempt from modifier 51 reporting
- B. The code includes moderate (conscious) sedation
- C. The code's descriptor has been revised this edition
- D. The code is new for the current edition
Show answer & explanation
Answer: D
A filled bullet marks a new code and a triangle marks a revised description. A circle with a slash identifies codes exempt from modifier 51, a plus sign marks add-on codes, and facing triangles enclose new or revised text. Reading these symbols before assigning a code prevents using a deleted or superseded entry.29. A CPT code is designated as an add-on code with a plus symbol. How must it be reported?
- A. Always in addition to a primary procedure code, and never alone
- B. Alone, as a standalone service
- C. With modifier 51 appended to reduce payment
- D. Only when the primary procedure is performed on a different date
Show answer & explanation
Answer: A
Add-on codes describe additional work performed with a primary procedure and are never reported by themselves. They are also exempt from modifier 51, because the multiple procedure reduction does not apply to work that is inherently supplemental and already priced accordingly.30. A surgeon performs a procedure on both the left and right knees during the same session. Which modifier reports the bilateral nature of the service?
- A. Modifier 22
- B. Modifier 50
- C. Modifier 51
- D. Modifier 59
Show answer & explanation
Answer: B
Modifier 50 identifies a bilateral procedure performed at the same session. Modifier 51 identifies multiple different procedures, modifier 59 identifies a distinct procedural service unbundled from another, and modifier 22 reports increased procedural services requiring documentation of the substantially greater work involved.31. CPT codes ending in the letter T, such as those in the 0001T series, belong to which category?
- A. Category I, the main body of procedure codes, in the alphanumeric appendix
- B. Category II, supplemental performance measurement tracking codes ending in T
- C. HCPCS Level II temporary codes, which CMS assigns while a permanent code is pending
- D. Category III, temporary codes for emerging technology, services and procedures
Show answer & explanation
Answer: D
Category III codes are temporary five-character alphanumeric codes ending in T that track emerging technology and must be reported instead of an unlisted Category I code when one exists. Category II codes end in F and are optional performance-measurement codes carrying no relative value.32. Which modifier indicates that a procedure was discontinued after anesthesia was administered to the patient?
- A. Modifier 73 in the facility setting, or modifier 52 for physician reporting
- B. Modifier 52 in both the facility and the physician setting, with a reduced fee
- C. Modifier 78 in the facility setting, or modifier 22 for physician reporting
- D. Modifier 74 in the facility setting, or modifier 53 for physician reporting
Show answer & explanation
Answer: D
Modifier 73 reports a facility discontinuation before anesthesia and modifier 74 after anesthesia administration. Physicians report a discontinued procedure with modifier 53. Modifier 52 reports reduced services where the procedure was partially reduced at the provider's discretion rather than aborted, and modifier 78 reports an unplanned return to the operating room.33. A patient undergoes a planned staged procedure during the global period of a prior surgery by the same physician. Which modifier applies?
- A. Modifier 76
- B. Modifier 58
- C. Modifier 78
- D. Modifier 79
Show answer & explanation
Answer: B
Modifier 58 identifies a staged or related procedure planned prospectively, or more extensive than the original, during the postoperative period. Modifier 78 reports an unplanned return to the operating room for a related procedure, modifier 79 reports an unrelated procedure during the global period, and modifier 76 reports a repeat procedure by the same physician.34. Modifier 59 is used to identify a distinct procedural service. What is the primary compliance concern with this modifier?
- A. It may only be appended to evaluation and management codes, so reporting it on a surgical procedure triggers an automatic denial of the entire claim
- B. It always reduces the reimbursement for the second procedure, so it should be replaced with modifier 51 whenever two procedures are performed during the same operative session
- C. It is required on every claim that lists more than one procedure, so omitting it causes the secondary procedures to be denied as duplicates
- D. It can be misused to bypass edits that correctly bundle services, so it must be supported by documentation of a genuinely separate encounter, site or session
Show answer & explanation
Answer: D
Modifier 59 overrides National Correct Coding Initiative edits, which is exactly why improper use is a frequent audit and enforcement finding. It is appropriate only for a different session, different procedure, different site or separate injury, and the more specific X modifiers were introduced to make the basis explicit.35. What does the global surgical package generally include?
- A. Only the procedure itself, with every preoperative and postoperative visit billed separately as an E/M service
- B. Treatment of complications that require a return to the operating room during the postoperative period
- C. The procedure, typical preoperative and postoperative care, and related follow-up within the global period
- D. All care provided to the patient for one calendar year after the surgery, including treatment of unrelated conditions
Show answer & explanation
Answer: C
The global package bundles the operation, local anesthesia, the immediate preoperative visit and routine postoperative care within the assigned global period, commonly 0, 10 or 90 days. Treatment of unrelated problems or complications requiring a return to the operating room falls outside it and is reported with the appropriate modifier.36. A coder is assigning a code for a surgical procedure performed through an endoscope. Which principle applies?
- A. The endoscopic code is reported in addition to the open code, with modifier 51 on the lesser of the two
- B. Approach is irrelevant to CPT selection, because relative values are assigned to the procedure, not the technique
- C. The approach documented determines code selection, so an endoscopic approach requires the endoscopic code
- D. Open and endoscopic approaches use interchangeable codes, because the anatomic result of the procedure is the same
Show answer & explanation
Answer: C
CPT distinguishes approach, so open, laparoscopic, endoscopic and percutaneous versions of the same procedure carry different codes and different relative values. A procedure begun endoscopically and converted to open is reported with the open code only, and the endoscopic attempt is not separately billed.37. Which statement about reporting an unlisted CPT code is correct?
- A. It never requires additional documentation, because the payer prices the service from the physician's fee schedule
- B. It may be used whenever the exact code is difficult to locate, provided a note explains why the search was abandoned
- C. It is used only when no Category I or Category III code describes the service, and requires a supporting report
- D. It should be used instead of a Category III code for new technology, because Category III codes are not payable
Show answer & explanation
Answer: C
An unlisted code is a last resort used when no existing code describes the service, and it must be accompanied by a report describing the nature, extent and need for the procedure so the payer can price it. Where a Category III code exists for the emerging service, it must be used instead of an unlisted code.38. A code from the CPT Category II code set is being considered for a patient encounter where a screening was performed. What is the correct application of these codes?
- A. They are used only for anesthesia services and carry a base unit value instead of an RVU
- B. They report performance measurement data and carry no relative value for reimbursement
- C. They replace the Category I codes for identical procedures whenever a screening is performed
- D. They describe new and emerging technologies and services that are still awaiting FDA approval
Show answer & explanation
Answer: B
Category II codes are supplemental tracking codes used to report clinical performance measures, such as screenings or counseling delivered; unlike Category I codes, they carry no relative value units and are never billed for reimbursement, so their purpose is purely performance and quality data collection.39. A surgeon performs three separate procedures through the same operative approach during a single surgical session. Which modifier is appended to the secondary and subsequent procedure codes to indicate multiple procedures were performed at the same session?
- A. Modifier 59
- B. Modifier 51
- C. Modifier 76
- D. Modifier 25
Show answer & explanation
Answer: B
Modifier 51 identifies that multiple procedures were performed by the same provider during the same operative session, alerting the payer that standard multiple-procedure payment reductions may apply to the secondary procedures; this differs from modifier 59, which identifies a procedure as distinct or independent rather than simply additional.40. A patient returns to the same physician later on the same day for a repeat electrocardiogram to monitor a changing condition. Which modifier indicates that the identical procedure was repeated by the same physician on the same date?
- A. Modifier 91
- B. Modifier 59
- C. Modifier 76
- D. Modifier 77
Show answer & explanation
Answer: C
Modifier 76 reports that a procedure or service was repeated by the same physician subsequent to the original service, distinguishing it from modifier 77, which is used when a different physician repeats the procedure; correctly distinguishing these prevents the claim from appearing to be an inadvertent duplicate charge.41. A coder abstracting a procedure notes that the documentation describes services beyond what a single base code captures. Which action best supports accurate reporting when the documented work exceeds the base procedure description?
- A. Split the encounter across two separate dates of service to justify reporting the additional codes
- B. Report only the base code and ignore the additional documented work, since it is included in the global package
- C. Report the additional documented service using the appropriate add-on or supplemental code when supported
- D. Round up to a more expensive code in an unrelated family that better reflects the total work performed
Show answer & explanation
Answer: C
When documentation supports work beyond a base procedure, the additional service should be reported with the appropriate supplemental or add-on code, provided the documentation supports it. Ignoring documented work under-reports; fabricating dates or unrelated codes misrepresents the record.42. A medical coder is reviewing an operative report and must select the code that most precisely reflects the documented procedure. When two codes could apply but one describes the service to a greater level of specificity, which principle should guide the selection?
- A. Assign both codes and append modifier 59 to the second so the payer can decide which one to reimburse
- B. Assign whichever code carries the higher reimbursement, since both are supported by the operative report
- C. Assign the more general code to avoid over-reporting, because a specific code invites closer payer scrutiny in audits
- D. Assign the code that describes the service to the highest level of specificity supported by the documentation
Show answer & explanation
Answer: D
Accurate coding requires selecting the code supported by documentation at the highest level of specificity. Reporting a vaguer code when a more precise one is documented misrepresents the service; assigning both or choosing by reimbursement is inappropriate.
Compliance and Regulatory
28 questions43. What is the primary function of the National Correct Coding Initiative (NCCI) edits in procedural coding?
- A. To prevent unbundling by identifying codes that should not be reported together on the same claim
- B. To set the maximum allowable reimbursement for each procedure listed in the Medicare physician fee schedule
- C. To determine whether the diagnosis on the claim establishes medical necessity for each surgical procedure
- D. To map CPT procedure codes to their HCPCS Level II equivalents for supplies billed on the same claim
Show answer & explanation
Answer: A
NCCI edits are designed to prevent unbundling—the inappropriate separation and coding of components that should be reported as a single comprehensive code. These edits identify code pairs that should not be reported together because one code includes the work of the other. NCCI does not set reimbursement amounts, replace code systems, or determine medical necessity; it enforces proper code combination according to clinical and billing conventions.44. A coder must establish the medical necessity linkage between a reported procedure and the patient's documented condition. What coding principle does this reflect?
- A. Any procedure listed in CPT is presumed medically necessary once it is reported with a valid diagnosis code
- B. The provider's documentation must contain the phrase 'medically necessary' next to each procedure ordered
- C. The diagnosis (ICD-10-CM code) must support the medical reasonableness of the reported procedure (CPT code)
- D. The diagnosis and procedure codes must be drawn from the same chapter so the payer can match them automatically
Show answer & explanation
Answer: C
Medical necessity linkage ensures that the diagnosis supports why the procedure was performed. The diagnosis code (from ICD-10-CM) justifies the medical reasonableness of the procedure code (from CPT). This is a fundamental compliance requirement. The two systems do not need to use the same numbering; they are separate systems that work together to paint a complete clinical and billing picture. Medical necessity is inferred from appropriate diagnosis documentation, not necessarily stated using that exact term.45. A coder reviews a claim where the physician documented 'right knee pain' in the chief complaint but ordered an MRI of the right ankle. The coder coded for both knee and ankle pain. Which documentation principle has the coder violated?
- A. The coder should code only what is clearly documented and supported by test orders or findings, not infer additional diagnoses
- B. The coder should code both joints whenever imaging of more than one anatomic site is documented in the same encounter
- C. The coder should code the site of the imaging study, because the test order overrides the chief complaint whenever the two conflict
- D. The coder should query the physician only when the documentation is incomplete, and otherwise code every site that is mentioned
Show answer & explanation
Answer: A
A coder must code only diagnoses that are clearly documented and supported by clinical evidence in the record—coding ankle pain when only knee pain was documented and no ankle findings exist violates the principle of coding what is substantiated. Choice B is incorrect because the test site alone doesn't justify coding an undocumented diagnosis. Choice C incorrectly prioritizes the imaging location over the documented clinical picture. Choice D is partially correct but misses the core principle: the coder should not infer diagnoses in the first place; a query is for clarification of ambiguous documentation, not for permission to code what isn't there.46. Under the query process, a coder identifies a discrepancy between a documented diagnosis and the clinical findings. Which action best exemplifies appropriate query protocol?
- A. Contact the physician by phone, obtain verbal confirmation, code on the basis of that conversation, and keep a note of the call in the coder's own log
- B. Code the diagnosis that best matches the clinical findings, note the discrepancy in the medical record, and release the claim without a query
- C. Code the diagnosis as documented, submit the claim, and simultaneously ask the physician to clarify the clinical basis in an addendum
- D. Refrain from coding the questionable diagnosis, document the discrepancy, and submit a formal query requesting clarification before claim submission
Show answer & explanation
Answer: D
Proper query protocol requires holding the claim and submitting a documented query to the physician before coding questionable items—this creates an audit trail and ensures the final coding reflects the physician's intent after review. Choice C violates the principle by coding before obtaining clarity. Choice B, while well-intentioned, imposes the coder's clinical judgment over the physician's documented statement. Choice A, though it seeks clarification, bypasses the formal documentation trail that compliance requires; verbal conversations lack the written evidence necessary for audit defense.47. Which term describes reporting several individual component codes separately when a single comprehensive code exists?
- A. Unbundling
- B. Bundling
- C. Downcoding
- D. Upcoding
Show answer & explanation
Answer: A
Unbundling fragments a comprehensive service into parts to increase payment and is a recognized form of improper billing. Upcoding reports a higher level of service than documented. Downcoding reports a lower level than supported, which is also inaccurate and can constitute a compliance problem despite reducing payment.48. What is the purpose of the National Correct Coding Initiative?
- A. To license and credential the coding professionals who submit claims to Medicare Administrative Contractors
- B. To set the physician fee schedule payment amounts by assigning relative value units to each procedure code
- C. To prevent improper payment through edits that identify code pairs that should not be reported together
- D. To assign ICD-10-CM diagnosis codes to the procedures on a claim so that medical necessity is established
Show answer & explanation
Answer: C
NCCI edits identify procedure-to-procedure code pairs that should not be billed together and set medically unlikely edits capping units of service. Some pairs permit a modifier to override the edit when the services were genuinely distinct; others do not. Edits are updated quarterly, so working from a current file matters.49. A coder notices that a provider consistently documents a level of service that is not supported by the record. What is the appropriate action?
- A. Ignore the pattern, because the coder's role is limited to code assignment, not documentation
- B. Query the provider and escalate through the practice's compliance program
- C. Code the level of service the provider selected, since the provider bears responsibility
- D. Silently downcode all of the provider's claims to the level the documentation supports
Show answer & explanation
Answer: B
Codes must reflect the documentation, so a mismatch is resolved by querying the provider using a compliant, non-leading query and escalating a pattern through the compliance program. Coding to an unsupported level exposes the practice to false claims liability, and silently changing codes without provider involvement is equally improper.50. Which characteristic makes a physician query non-compliant?
- A. Offering multiple reasonable clinical options including "other" and "unable to determine"
- B. Being posed in writing and retained in the record
- C. Suggesting a specific diagnosis or indicating the financial impact of the answer
- D. Citing the specific documentation that prompted the question
Show answer & explanation
Answer: C
A compliant query is open ended or multiple choice with clinically reasonable options, cites the relevant documentation and never leads the provider toward a particular answer or mentions reimbursement consequences. Leading queries taint the record and can be characterized as inducing documentation to support a higher payment.51. Under the federal False Claims Act, what conduct creates liability?
- A. Only conduct that a court finds intentional beyond a reasonable doubt in a criminal proceeding
- B. Failing to obtain prior authorization before providing a service covered by a federal program
- C. Knowingly submitting or causing the submission of a false or fraudulent claim for payment
- D. Any billing error that results in an overpayment, regardless of the provider's intent or knowledge
Show answer & explanation
Answer: C
The Act reaches knowing submission of false claims, and knowingly includes actual knowledge, deliberate ignorance and reckless disregard, so willful blindness is not a defense. It carries treble damages and per-claim penalties and permits whistleblower suits. Innocent errors identified and repaid promptly are handled differently from knowing conduct.52. What does the federal Anti-Kickback Statute prohibit?
- A. Charging different fees to different payers for the same service without disclosing the fee schedule to each
- B. Reporting more than one procedure on a single claim without appending the multiple-procedure modifier 51
- C. Knowingly offering or receiving remuneration to induce referrals of federal health care program business
- D. Employing more than one coder in a practice without a written compliance plan on file for each employee
Show answer & explanation
Answer: C
The Anti-Kickback Statute bars remuneration in any form intended to induce or reward referrals of items or services payable by a federal health care program. It is an intent-based criminal statute with safe harbors for defined arrangements. The Stark law separately prohibits certain physician self-referrals and operates on a strict liability basis.53. How long must documentation supporting a submitted claim generally be retained and available?
- A. For the period required by payer contract, federal rule and state law, whichever is longest
- B. For thirty days after submission, the window in which a payer may request additional records
- C. Until the claim is paid and the remittance advice has been posted to the patient's account
- D. There is no retention requirement once the claim has passed the payer's timely filing limit
Show answer & explanation
Answer: A
Retention is driven by overlapping obligations from payer contracts, federal program rules and state record laws, and the longest applicable period controls. Records must remain retrievable for audits, which can look back years. Discarding documentation before the retention period ends leaves a claim indefensible in an audit.54. A practice discovers it has been overpaid by a federal health care program due to a coding error. What is the general obligation?
- A. Offset the amount against future claims for the same patient without notifying the payer
- B. Take no action if the error was unintentional, because liability requires intent to deceive
- C. Report and return the overpayment within the statutory deadline after identification
- D. Retain the funds unless the payer identifies the error and formally requests a refund
Show answer & explanation
Answer: C
Identified overpayments from federal programs must be reported and returned within the statutory window, and retaining a known overpayment past that deadline can itself become a false claim. Lack of original intent does not excuse retention once the overpayment is identified, and silent offsetting is not a compliant repayment method.55. Which element is essential in every medical record entry supporting a billed service?
- A. The coder's initials in place of the provider's signature when the provider is unavailable
- B. Legible, dated documentation authenticated by the rendering provider
- C. The patient's insurance identification number and group number on each page
- D. The expected reimbursement amount for each service listed in the entry
Show answer & explanation
Answer: B
Entries must be legible, dated and authenticated by the provider who rendered the service, because an unauthenticated entry cannot support the claim in an audit. Expected payment has no place in the clinical record, and a coder cannot authenticate a clinical entry on the provider's behalf.56. A physician assistant provides a service that is billed under the supervising physician's number under incident-to rules. What is a core requirement?
- A. The physician must have established the plan of care and remain involved, with direct supervision available as required
- B. The physician need never have seen the patient, provided the physician assistant holds an individual NPI that is on file with the payer
- C. Incident-to billing applies to new patient problems, as long as the physician is physically present in the office suite
- D. Incident-to billing applies in the inpatient hospital setting, where the physician is available on the nursing unit
Show answer & explanation
Answer: A
Incident-to billing requires an established patient with a physician-established plan of care, ongoing physician involvement, and the required level of supervision, and it applies in the office setting rather than the hospital. A new problem or a new patient falls outside it and must be billed under the rendering practitioner.57. What distinguishes a Local Coverage Determination from a National Coverage Determination?
- A. An LCD is issued by a Medicare Administrative Contractor for its jurisdiction; an NCD applies nationwide
- B. Neither affects claim payment; they are educational documents describing accepted standards of clinical practice
- C. An LCD applies nationwide to all Medicare claims, while an NCD is limited to the contractor's regional jurisdiction
- D. Both are issued by individual practices as part of their compliance plans and filed with the Medicare contractor
Show answer & explanation
Answer: A
National Coverage Determinations are issued by CMS and bind all contractors, while Local Coverage Determinations are issued by a MAC and apply only within its jurisdiction, often specifying which diagnosis codes support medical necessity for a service. Where an NCD exists, an LCD may not contradict it.58. When is an Advance Beneficiary Notice appropriately issued to a Medicare beneficiary?
- A. Before providing a service the provider believes Medicare will likely not cover, so the patient can decide whether to accept financial responsibility
- B. Only for services that are statutorily excluded from Medicare coverage, such as routine dental care or cosmetic surgery
- C. For every service provided to every Medicare beneficiary, as a routine intake form that protects the practice against any future denial
- D. After the claim has been denied by Medicare, so that the patient understands why the unpaid balance is being transferred to personal financial responsibility
Show answer & explanation
Answer: A
An ABN is delivered in advance when the provider expects Medicare to deny a normally covered service as not medically necessary, giving the patient an informed choice. Issuing it after the fact defeats its purpose, and blanket routine issuance to all patients invalidates it. Statutorily excluded services use a different notice.59. Which term describes the process of a payer reviewing a submitted claim and determining payment?
- A. Utilization review
- B. Capitation
- C. Credentialing
- D. Adjudication
Show answer & explanation
Answer: D
Adjudication is the payer's processing of the claim to pay, deny or pend it, resulting in a remittance advice or explanation of benefits. Credentialing verifies a provider's qualifications for network participation, capitation is a per-member payment model, and utilization review evaluates the necessity and efficiency of services.60. A denial is received stating the service is bundled into another procedure performed the same day. What is the appropriate first step?
- A. Review the NCCI edits and the documentation to determine whether a distinct service modifier is genuinely supported
- B. Append modifier 59 and resubmit immediately, because a bundling denial simply signals that the modifier was omitted
- C. Write off the charge without review, because bundled services can never be paid once the payer has applied the edit
- D. Bill the patient for the denied amount, since a denial for bundling shifts the financial responsibility to the patient
Show answer & explanation
Answer: A
The correct response is to verify whether the edit permits a modifier and whether the record actually documents a distinct session, site or injury. Reflexively appending modifier 59 to clear a denial without that support is the misuse pattern auditors target, and billing the patient for a contractually bundled service is improper.61. A provider documents a level 3 established patient office visit, but the coder submits the claim using a level 5 evaluation and management code to increase reimbursement, even though the documentation does not support that level of service. What is this practice called?
- A. Upcoding
- B. Bundling
- C. Unbundling
- D. Downcoding
Show answer & explanation
Answer: A
Upcoding occurs when a provider or coder reports a higher-level or more complex code than the documentation actually supports in order to increase reimbursement, which constitutes a compliance violation and potential fraud; this differs from downcoding, where a lower level than documented is reported instead.62. A billing department routinely reports a lower level of evaluation and management service than what the physician's documentation actually supports, out of concern about being audited. What compliance issue does this practice create?
- A. It automatically qualifies as a self-disclosed overpayment, so the practice must file a refund report for each downcoded claim it identifies
- B. It still constitutes inaccurate coding and may violate the requirement to code to the level actually supported by documentation
- C. It eliminates all compliance risk, because underpayment can never be characterized as a false claim under federal law
- D. It is required practice under the False Claims Act, which directs providers to resolve any doubt in favor of the lower level
Show answer & explanation
Answer: B
Even though downcoding results in underpayment rather than overpayment, it still misrepresents the services actually documented and provided, violating the principle that codes must accurately reflect the medical record; compliant coding requires reporting the level truly supported by documentation, not a conservative estimate offered to avoid scrutiny.63. A coder reviewing a series of progress notes from the same provider notices that the history and exam sections are identical word-for-word across multiple distinct patient encounters on different dates. What compliance concern does this raise?
- A. None, because templated notes are always acceptable as long as the provider signs each encounter
- B. A required practice under electronic health record standards for consistency across encounters
- C. Cloned documentation, which may not accurately reflect the unique findings of each encounter
- D. Evidence of upcoding only, since identical exams do not affect the integrity of the documentation
Show answer & explanation
Answer: C
Cloned or copy-forwarded documentation that is identical across separate encounters raises concern that the record does not reflect the distinct clinical findings and medical necessity of each individual visit, which can undermine the credibility of the documentation supporting the billed service and trigger audit scrutiny.64. A medical record entry supporting a billed service lacks any provider signature, credential, or other means of authentication. What is the compliance impact on the claim?
- A. The entry can still support the claim without any authentication
- B. Authentication is only required for surgical procedures
- C. A nurse's signature alone always satisfies authentication requirements regardless of who performed the service
- D. The unauthenticated entry may not be considered valid documentation to support the billed service
Show answer & explanation
Answer: D
Documentation must be authenticated by the rendering provider through a signature or an acceptable electronic equivalent to confirm the entry's validity; an entry lacking this authentication may be disregarded during an audit, jeopardizing the claim's supporting documentation even if the service was actually performed.65. A physician realizes several days after an encounter that important clinical detail was omitted from the original documentation. What is the compliant method for adding this information to the medical record?
- A. Add a dated and signed addendum that references the original entry without altering it
- B. Delete the original entry and rewrite it in full so the record contains only one complete note
- C. Verbally inform the coder of the missing detail so the claim reflects it without changing the record
- D. Leave the record unchanged, because clinical detail cannot be added after the date of the encounter
Show answer & explanation
Answer: A
Compliant documentation practice requires that any addition made to a medical record after the original entry be recorded as a separate, dated, and signed addendum clearly identified as a later addition; the original entry must remain intact and unaltered so the record preserves an accurate history of when information was documented.66. A healthcare organization's compliance department reviews an annually published federal document identifying areas of high fraud, waste, and abuse risk that auditors intend to scrutinize, and uses it to prioritize internal coding audits. What is this document commonly known as?
- A. The Local Coverage Determination
- B. The OIG Work Plan
- C. The CPT Editorial Summary
- D. The National Coverage Determination
Show answer & explanation
Answer: B
The Office of Inspector General publishes a Work Plan identifying focus areas where it intends to conduct audits and investigations for fraud, waste, and abuse risk; proactive compliance programs commonly use this document to guide internal auditing priorities and target training toward high-risk areas.67. A physician refers a patient for designated health services to an imaging facility in which the physician holds a financial ownership interest, without qualifying for an applicable exception. Which law primarily addresses this type of self-referral arrangement?
- A. The False Claims Act (31 U.S.C. 3729-3733)
- B. The Anti-Kickback Statute (42 U.S.C. 1320a-7b)
- C. The Physician Self-Referral Law (Stark Law)
- D. The HIPAA Privacy Rule (45 CFR Part 164)
Show answer & explanation
Answer: C
The Physician Self-Referral Law, commonly called the Stark Law, specifically prohibits physicians from referring patients for certain designated health services to an entity with which the physician or an immediate family member has a financial relationship, unless an exception applies; this differs from the Anti-Kickback Statute, which addresses remuneration exchanged for referrals more broadly.68. An employee of a medical practice becomes aware of a pattern of fraudulent billing and files a lawsuit on behalf of the government, potentially sharing in any resulting recovery. Under which type of legal action does this employee's suit fall?
- A. A Stark Law self-referral claim
- B. An Anti-Kickback Statute safe harbor filing
- C. A HIPAA breach notification
- D. A qui tam action under the False Claims Act
Show answer & explanation
Answer: D
The False Claims Act allows a private individual, often called a relator or whistleblower, to file a qui tam lawsuit on behalf of the government against an entity suspected of submitting fraudulent claims, with the possibility of receiving a portion of any funds recovered; this mechanism encourages internal reporting of suspected billing fraud.69. A provider who participates in the Medicare program bills a beneficiary directly for the difference between the provider's full charge and the Medicare-allowed amount, beyond any applicable coinsurance or deductible. What compliance issue does this represent?
- A. Prohibited balance billing by a participating provider
- B. A required practice for all providers regardless of participation status
- C. An acceptable practice as long as the patient consents
- D. A coding error unrelated to billing compliance
Show answer & explanation
Answer: A
Participating providers agree to accept the payer's allowed amount as payment in full, aside from permitted coinsurance and deductible amounts; billing the beneficiary for the remaining difference, known as balance billing, violates that participation agreement and constitutes a billing compliance violation rather than a coding issue.70. A coder identifies that a patient's chart lacks documentation of a known drug allergy that is referenced elsewhere in the patient's history, creating a risk that incomplete information could affect future clinical decisions. What is the coder's most appropriate compliance-oriented action?
- A. Add the allergy information to the chart directly, because a documented patient safety concern permits a coder to update clinical content
- B. Ignore the discrepancy, since allergy status does not affect code selection and lies outside the coder's scope
- C. Flag the discrepancy through the organization's established query or documentation improvement process for provider resolution
- D. Change the existing entry to match the referenced allergy without notifying the provider, and note the change in the coder's log
Show answer & explanation
Answer: C
Coders are not authorized to add or alter clinical content in the medical record themselves, even when patient safety concerns arise from a documentation gap; the appropriate response is to route the discrepancy through the organization's physician query or clinical documentation improvement process so the provider can resolve and properly document it, supporting both coding accuracy and safe patient care.
Pathology and Laboratory
1 question71. A laboratory test is repeated on the same day to obtain subsequent results. Which modifier reports this?
- A. Modifier 59
- B. Modifier 77
- C. Modifier 91
- D. Modifier 76
Show answer & explanation
Answer: C
Modifier 91 reports a repeat clinical diagnostic laboratory test performed to obtain subsequent results, such as serial potassium levels. It is not used to report repeats due to equipment failure or specimen problems. Modifiers 76 and 77 report repeat procedures by the same and a different physician respectively.
Anatomy
2 questions72. Which term refers to the layer of skin containing blood vessels, nerves and hair follicles, lying beneath the epidermis?
- A. The subcutaneous layer
- B. The stratum corneum
- C. The fascia
- D. The dermis
Show answer & explanation
Answer: D
The dermis lies beneath the epidermis and contains vessels, nerves, glands and hair follicles. The subcutaneous layer of fat sits below it, and the stratum corneum is the outermost epidermal layer. Depth matters directly in coding: lesion excision and repair codes are selected by layer and by lesion size plus margins.73. Which body system includes the pancreas in its endocrine function?
- A. The lymphatic system only, because the pancreas drains into the thoracic duct
- B. The endocrine system, through the islet cells producing insulin and glucagon
- C. The integumentary system, through the sweat glands that respond to insulin
- D. The urinary system, because pancreatic enzymes are cleared through the kidneys
Show answer & explanation
Answer: B
The pancreas has both exocrine function, secreting digestive enzymes into the duodenum, and endocrine function through the islets of Langerhans producing insulin and glucagon. Dual-function organs are a common coding pitfall because the documented condition determines which chapter and code range applies.
Evaluation and Management
9 questions74. Modifier 25 is appended to an evaluation and management code. What does it signify?
- A. An E/M service reduced in scope because part of the visit time was devoted to performing the procedure
- B. A preventive rather than problem-oriented E/M service provided on the same day as a minor procedure
- C. A significant, separately identifiable E/M service by the same physician on the same day as another procedure
- D. An E/M service performed by a physician of a different specialty in the same group on the same day as the procedure
Show answer & explanation
Answer: C
Modifier 25 tells the payer that the E/M service went beyond the usual pre- and post-procedure work bundled into the procedure. The documentation must stand on its own to support the separate service. Overuse of modifier 25 is a well-known audit target, so the separately identifiable work must be clearly recorded.75. Under current evaluation and management guidelines for office visits, what determines the level of service?
- A. The patient's insurance plan type and the place of service reported
- B. Medical decision making or total time on the date of the encounter
- C. The number of history and examination bullet elements documented
- D. The number of diagnoses listed on the claim, weighted by their severity
Show answer & explanation
Answer: B
Office and outpatient E/M levels are selected on either medical decision making or total time spent on the date of the encounter. History and examination are performed as clinically appropriate but no longer drive the level. Time now includes non-face-to-face work on that date, such as record review and documentation.76. Which three elements comprise medical decision making for evaluation and management leveling?
- A. Total time, place of service and the number of prescriptions written on the date of the encounter
- B. Chief complaint, review of systems and past history, weighted by the number of systems addressed
- C. Number and complexity of problems, amount and complexity of data, and risk of complications
- D. History, examination and counseling, each scored against the 1995 or 1997 documentation guidelines
Show answer & explanation
Answer: C
Medical decision making comprises the number and complexity of problems addressed, the amount and complexity of data reviewed and analyzed, and the risk of complications, morbidity or mortality of patient management. Two of the three elements must be met or exceeded to reach a given level.77. For evaluation and management purposes, how is a new patient defined?
- A. One who has never been seen at the current practice location, even if the same physician treated the patient at a previous office location within the past three years
- B. One whose insurance coverage has changed since the last visit, because the new payer has no claims history for the patient with the physician
- C. One who has not been seen by any physician in the group within the past twelve months, regardless of that physician's specialty or subspecialty
- D. One who has not received a professional service from the physician or another physician of the same specialty in the same group within the past three years
Show answer & explanation
Answer: D
The three-year rule looks at professional services from the same physician or from a physician of the same specialty and subspecialty in the same group practice. A patient seen by a different specialty within the group may still be new. Location and insurance changes are irrelevant to the determination.78. A physician spends 45 minutes on the date of an established patient office encounter, including reviewing outside records and documenting in the chart. How does this time count for E/M selection?
- A. All qualifying time personally spent by the physician on that date counts, including non-face-to-face work
- B. Only the face-to-face portion of the visit counts, so record review and documentation time are excluded from the total
- C. Time spent by clinical staff counts toward the physician's total when the staff work under direct supervision
- D. Time may not be used to select the level for established patient visits; only medical decision making applies
Show answer & explanation
Answer: A
Total time on the date of the encounter includes preparing to see the patient, obtaining history, examination, counseling, ordering, documenting and care coordination performed personally by the physician or qualified health professional. Time spent by clinical staff does not count, nor does time on a different calendar date.79. A patient is seen for a preventive medicine visit, and during the same encounter the physician also evaluates and treats a new significant problem. How is this reported?
- A. Report the preventive medicine code with modifier 22 to reflect the additional work of the problem evaluation
- B. Report the preventive medicine code plus the appropriate problem-oriented E/M code with modifier 25
- C. Report only the preventive medicine code, because any problem addressed during a wellness visit is included
- D. Report only the problem-oriented E/M code at a higher level to account for the preventive counseling
Show answer & explanation
Answer: B
When a significant separately identifiable problem is addressed during a preventive visit, both services may be reported with modifier 25 on the problem-oriented code. The documentation must clearly separate the preventive work from the problem evaluation. A trivial or incidental problem requiring no extra work does not support the additional code.80. A patient is within the global postoperative period of a prior unrelated surgery performed by the same physician and presents with a new, unrelated problem that the physician evaluates and manages during an office visit. Which modifier is appended to the E/M code to indicate the visit is unrelated to the prior surgery's global period?
- A. Modifier 24
- B. Modifier 79
- C. Modifier 58
- D. Modifier 78
Show answer & explanation
Answer: A
Modifier 24 identifies an evaluation and management service performed during a postoperative global period that is unrelated to the original surgery, allowing separate payment for the unrelated E/M service; this differs from modifier 79, which is used for an unrelated procedure rather than an E/M service performed during the global period.81. A physician evaluates a patient at the request of another physician seeking a specialist's opinion on a specific problem, and sends a written report of findings back to the requesting physician. Which three elements must generally be present to support reporting this encounter as a consultation?
- A. Request, refusal of the opinion, and re-evaluation by the requesting provider
- B. Referral for transfer of care, treatment, and a discharge summary sent to the primary provider
- C. Registration, review of the outside records, and reimbursement by the requesting provider
- D. Request, render (an opinion or service), and report back to the requesting provider
Show answer & explanation
Answer: D
A consultation is generally supported when a requesting provider asks another provider for an opinion or advice on a specific problem, the consulting provider renders that opinion or service, and a written report is communicated back to the requesting provider; absent any one of these three elements, the encounter is typically reported as a regular office visit rather than a consultation.82. In a hospital outpatient setting, a physician and a qualified nonphysician practitioner from the same group each personally perform and document a portion of the same patient encounter on the same date. What is this reporting arrangement called?
- A. A split or shared visit
- B. A consultation
- C. A global surgical package
- D. An incident-to service
Show answer & explanation
Answer: A
A split or shared visit occurs when a physician and a nonphysician practitioner from the same group both personally perform a portion of the same evaluation and management encounter on the same date, with specific rules governing which provider's identity is used for billing; this differs from incident-to billing, which involves services provided by auxiliary staff under a physician's direct supervision as an extension of the physician's own prior service.
Radiology
2 questions83. Which pair of modifiers distinguishes the professional component from the technical component of a diagnostic service?
- A. Modifier 91 for the professional component and modifier 76 for the technical component
- B. Modifier 51 for the professional component and modifier 50 for the technical component
- C. Modifier 26 for the professional component and modifier TC for the technical component
- D. Modifier TC for the professional component and modifier 26 for the technical component
Show answer & explanation
Answer: C
Modifier 26 reports the physician's interpretation and written report, and HCPCS modifier TC reports the equipment, supplies and technician time. When one entity provides both, the code is reported globally without either modifier. This split matters most in radiology, cardiology and pathology.84. A patient undergoes a diagnostic imaging study interpreted by one radiologist, and later the same day a covering radiologist from a different practice repeats the same study and provides a new interpretation. Which modifier does the covering radiologist append to indicate the service was repeated by a different physician?
- A. Modifier 76
- B. Modifier 59
- C. Modifier 25
- D. Modifier 77
Show answer & explanation
Answer: D
Modifier 77 indicates that a procedure or service was repeated by a different physician than the one who performed the original service, whereas modifier 76 is reserved for a repeat performed by the same physician; using the correct modifier clarifies for the payer that the repeat was not an unnecessary duplicate billed twice by the same provider.
Medical Terminology
4 questions85. The suffix "-ectomy" in a procedure description indicates what?
- A. Creation of an artificial opening
- B. Surgical repair or reconstruction
- C. Surgical removal or excision
- D. Visual examination with a scope
Show answer & explanation
Answer: C
Ectomy means excision or removal, as in appendectomy. Plasty means surgical repair or reshaping, scopy means visual examination with an instrument, ostomy means creation of an artificial opening, otomy means incision, and pexy means surgical fixation. These roots are the fastest route to the correct CPT section.86. Which prefix means "around" or "surrounding"?
- A. Endo-
- B. Epi-
- C. Hypo-
- D. Peri-
Show answer & explanation
Answer: D
Peri means around, as in pericardium, the sac surrounding the heart. Endo means within, epi means upon or above, and hypo means below or deficient. Prefix accuracy changes anatomic site and therefore code selection: epidural and subdural describe entirely different spaces.87. A diagnosis is documented using a medical term ending in the suffix '-itis,' such as appendicitis or bronchitis. What does this suffix indicate about the condition?
- A. Surgical removal
- B. Inflammation
- C. Abnormal narrowing
- D. Formation of a new opening
Show answer & explanation
Answer: B
The suffix '-itis' denotes inflammation of the body part named in the root of the term, such as inflammation of the appendix in appendicitis; recognizing common suffixes allows a coder to accurately interpret documented diagnoses and locate the correct term in the classification index.88. A procedure note documents a 'nephrectomy.' Based on the medical terminology root, which organ was removed?
- A. The bladder
- B. The spleen
- C. The kidney
- D. The liver
Show answer & explanation
Answer: C
The root 'nephro-' refers to the kidney, and combined with the suffix '-ectomy,' meaning surgical removal, the term 'nephrectomy' specifically describes the surgical removal of a kidney; correctly parsing medical terminology roots and suffixes helps a coder verify that the documented procedure matches the code being selected.
Integumentary System (10000 Series)
8 questions89. A wound repair is documented as requiring layered closure of deeper subcutaneous tissue and superficial fascia. How is this classified for CPT purposes?
- A. Adjacent tissue transfer
- B. Intermediate repair
- C. Simple repair
- D. Complex repair
Show answer & explanation
Answer: B
Simple repair is a one-layer closure of superficial wounds. Intermediate repair requires layered closure of deeper subcutaneous tissue and superficial fascia, or single-layer closure of a heavily contaminated wound requiring extensive cleaning. Complex repair involves more than layered closure, such as scar revision or extensive undermining.90. When coding multiple wound repairs of the same classification and anatomic group, how are the lengths handled?
- A. Average the lengths and report the code for the mean length with modifier 22 for the extra work
- B. Report each wound with its own code, appending modifier 59 to every repair after the first
- C. Add the lengths together and report a single code for the combined length
- D. Report only the longest wound, because the smaller repairs are included in the larger one
Show answer & explanation
Answer: C
Repairs of the same classification and from the same anatomic grouping are summed and reported once with the total length. Repairs of different classifications or from different anatomic groupings are reported separately, with the most complex listed first and the others appended with modifier 59 where appropriate.91. A dermatologist excises a biopsy-proven basal cell carcinoma from the left forearm. The lesion measures 1.5 cm at its widest point, the surgeon takes 0.3 cm margins on each side, and the defect is closed with a single-layer closure. Which CPT reporting is correct?
- A. 11603 plus 12002, reporting the single-layer closure of the 2.1 cm excision site as a separate simple repair
- B. 11602, because the lesion itself measures 1.5 cm and falls in the 1.1 to 2.0 cm tier of the malignant series
- C. 11403, because the excised diameter of 2.1 cm is reported from the benign series for the trunk, arms or legs
- D. 11603, because the excised diameter is 2.1 cm (1.5 cm lesion plus 0.3 cm margins on each side) in the malignant series
Show answer & explanation
Answer: D
CPT excision codes are selected by excised diameter, which is the greatest clinical diameter of the lesion plus the narrowest margin required, measured before excision: 1.5 cm + 0.3 cm + 0.3 cm = 2.1 cm, so the malignant lesion of the trunk, arms or legs is reported with 11603 (2.1 to 3.0 cm). 11602 uses the lesion size alone and ignores the margins. 11403 is the benign series, but the pathology report established a basal cell carcinoma. Simple (single-layer) closure is included in every excision code, so 12002 is not added; only an intermediate or complex repair is reported separately with the excision.92. In the emergency department a physician performs single-layer closures of a 2.5 cm laceration of the scalp and a 4.0 cm laceration of the right forearm. No debridement, undermining or layered closure is documented. How is the repair reported?
- A. 12004, because two wounds closed in one session are reported at the next higher length tier
- B. 12001 for the 2.5 cm scalp wound plus 12002 for the 4.0 cm forearm wound, listed as two repairs
- C. 12002 for the forearm plus 12011 for the scalp, because the scalp is a separate anatomic site
- D. 12002, one code for the summed 6.5 cm of simple repair in the same anatomic grouping
Show answer & explanation
Answer: D
The CPT repair (closure) guidelines direct the coder to add together the lengths of all wounds of the same classification (simple, intermediate or complex) that fall within the same anatomic grouping named in the code descriptor and to report one code for the total. The scalp and the extremities belong to the same simple-repair group (scalp, neck, axillae, external genitalia, trunk and/or extremities), so 2.5 cm + 4.0 cm = 6.5 cm is reported with 12002 (2.6 to 7.5 cm). Reporting 12001 and 12002 separately splits a single service, 12004 (7.6 to 12.5 cm) overstates the length, and 12011 belongs to the face, ears, eyelids, nose, lips and mucous membranes group, which does not include the scalp.93. A wound-care physician documents sharp surgical debridement of necrotic subcutaneous tissue from a sacral pressure ulcer measuring 6 cm by 8 cm (48 sq cm). Muscle, fascia and bone are not involved. Which codes are reported?
- A. 97597 plus 97598, selective debridement of an open wound, first 20 sq cm and each additional 20 sq cm
- B. 11042 for the first 20 sq cm plus 11045 with two units for the remaining 28 sq cm of subcutaneous debridement
- C. 11042 with three units, one unit for each 20 sq cm segment of the 48 sq cm wound surface
- D. 11043 plus 11046, because a pressure ulcer of this size is assumed to extend into the muscle layer
Show answer & explanation
Answer: B
Surgical debridement codes 11042-11047 are selected by the deepest tissue level documented as debrided and by surface area. 11042 reports debridement of subcutaneous tissue for the first 20 sq cm or less, and add-on 11045 reports each additional 20 sq cm or part thereof, so 48 sq cm is 11042 plus 11045 x 2 (20 + 20 + 8). 11042 is never reported in multiple units; the add-on carries the extra area. 11043 and 11046 require documented debridement of muscle and/or fascia, which the note rules out; depth is coded from what was removed, not inferred from the size of the ulcer. 97597 and 97598 describe selective debridement of an open wound without the depth-based surgical excision the physician documented.94. During one office visit a dermatologist performs a punch biopsy of a suspicious lesion on the back and a tangential (shave) biopsy of a different lesion on the left arm; both specimens are sent to pathology. What is reported for the biopsies?
- A. 11104 for the punch biopsy and 11102 for the tangential biopsy, each as a primary code with modifier 59 on the second
- B. 11102 for the tangential biopsy plus add-on 11105 for the punch biopsy of the second lesion
- C. 11104 with two units, because both lesions were sampled with a full-thickness biopsy technique
- D. 11104 for the punch biopsy plus add-on 11103 for the tangential biopsy of the second lesion
Show answer & explanation
Answer: D
The skin biopsy guidelines introduced with codes 11102-11107 allow only one primary biopsy code per session when different techniques are used on separate lesions. The primary code is chosen by the hierarchy incisional (11106) over punch (11104) over tangential (11102), and every other lesion is reported with the add-on that matches its own technique: 11103 (tangential, each separate/additional), 11105 (punch) or 11107 (incisional). Here the punch biopsy ranks higher, so 11104 is primary and the shave biopsy is 11103. Two primary codes with modifier 59 violate the single-primary rule, reporting 11102 as primary inverts the hierarchy, and a shave biopsy is not a full-thickness punch, so 11104 x 2 misstates the technique.95. A patient has seven actinic keratoses on the face and the dorsum of both hands destroyed with liquid nitrogen cryosurgery during a single office visit. Which CPT codes and units are reported?
- A. 17110 with one unit, because destruction of up to 14 lesions by any method is reported by lesion count
- B. 17000 with seven units, one unit for each premalignant lesion that was destroyed
- C. 17004, the code for destruction of premalignant lesions when more than five lesions are treated
- D. 17000 for the first lesion plus 17003 with six units for the second through seventh lesions
Show answer & explanation
Answer: D
Destruction of premalignant lesions such as actinic keratoses (ICD-10-CM L57.0) uses a three-code structure: 17000 for the first lesion, add-on 17003 for the second through the 14th lesion (one unit each), and 17004 alone when 15 or more lesions are destroyed. Seven lesions are therefore 17000 plus 17003 x 6. 17000 is reported once per session, not per lesion. 17004 is reserved for 15 or more lesions and is never reported with 17000 or 17003. 17110 describes destruction of benign lesions other than skin tags or cutaneous vascular lesions (for example warts), not premalignant lesions.96. A radiologist performs a percutaneous core needle biopsy of a single 1.2 cm right breast mass under ultrasound guidance, places a marker clip at the biopsy site, and images the specimen. Which code describes the service?
- A. 19083, biopsy of breast with ultrasound guidance, first lesion, including localization device placement and imaging of the specimen
- B. 19100 plus 76942, percutaneous needle core biopsy without imaging guidance plus ultrasonic guidance for needle placement
- C. 19081, biopsy of breast with stereotactic guidance, first lesion, including localization device placement when performed
- D. 19083 plus 76942 plus 19499, reporting the ultrasound guidance and the clip placement as separately identifiable services
Show answer & explanation
Answer: A
The image-guided breast biopsy codes 19081-19086 are bundled by design: each pair is defined by the guidance modality (19081/19082 stereotactic, 19083/19084 ultrasound, 19085/19086 magnetic resonance) and every code includes placement of a localization device such as a clip and imaging of the specimen when performed. An ultrasound-guided biopsy of one lesion is therefore 19083 alone. 76942 is not added because the guidance is inherent to the code, 19100 applies only to a percutaneous biopsy performed without imaging guidance, 19081 names the wrong modality, and 19499 (unlisted procedure, breast) is never used for a service that a specific code already describes.
Musculoskeletal System (20000 Series)
4 questions97. An orthopedist performs a closed reduction of a displaced distal radius fracture under sedation, confirms alignment with fluoroscopy, and applies a short arm cast. The same surgeon will provide all follow-up care. What is reported?
- A. 25600 plus 29075, closed treatment without manipulation plus application of the short arm cast
- B. 25605 alone; the initial cast application is included in the fracture treatment code
- C. 25605 plus 29075, closed treatment with manipulation plus the short arm cast applied at the same session
- D. 25607, because a displaced fracture that requires reduction is reported with the open treatment code
Show answer & explanation
Answer: B
A closed reduction is closed treatment with manipulation, reported with 25605 (closed treatment of distal radial fracture or epiphyseal separation, with manipulation). CPT and the NCCI Policy Manual, Chapter IV, state that fracture and dislocation treatment codes include the initial casting, strapping or splinting, so 29075 is not reported by the physician who treats the fracture; only a replacement cast during follow-up would be separately reported. 25600 is treatment without manipulation, and 25607 describes open treatment through a surgical exposure, which did not occur. Displacement alone never converts a closed reduction into open treatment.98. During right knee arthroscopy the surgeon performs a partial medial meniscectomy and also shaves fibrillated articular cartilage (chondroplasty) in the lateral compartment of the same knee. No loose body is removed. What is reported?
- A. 29881 plus G0289, the Medicare code for chondroplasty in a different compartment of the same knee
- B. 29880, because surgical work was performed in both the medial and the lateral compartments
- C. 29881 plus 29877 with modifier 59, because the chondroplasty was performed in a separate compartment
- D. 29881 alone; the code includes chondroplasty in the same or a separate compartment when performed
Show answer & explanation
Answer: D
The descriptor of 29881 is arthroscopy, knee, surgical; with meniscectomy (medial OR lateral, including any meniscal shaving) including debridement/shaving of articular cartilage (chondroplasty), same or separate compartment(s), when performed, so the lateral chondroplasty is part of the single code. The NCCI Policy Manual, Chapter IV, adds that 29877 is not reported with other knee arthroscopy codes and that G0289 may accompany 29880 or 29881 only for removal of a loose body or foreign body from a different compartment, never for chondroplasty. 29880 requires meniscectomy of both the medial and the lateral meniscus, which was not performed.99. A physician injects 40 mg of triamcinolone acetonide into the right knee joint using real-time ultrasound guidance; the guidance image is permanently recorded and a report is documented. Which codes are reported for the service?
- A. 20610 for the major joint injection plus 76942 for the ultrasound guidance plus J3301 with four units
- B. 20606 for the intermediate joint injection with ultrasound guidance plus J3301 with one unit for the 40 mg dose
- C. 20611 plus 76942, because the permanent recording of the guidance image is a separately reportable service
- D. 20611 for the injection with ultrasound guidance plus J3301 with four units for the drug
Show answer & explanation
Answer: D
The arthrocentesis family 20600-20611 is organized by joint size and by whether ultrasound guidance with permanent recording and reporting was performed. The knee is a major joint, so an injection with recorded ultrasound guidance is 20611; the guidance is built into the code and CPT instructs that 76942 is not reported with it. 20610 is the same joint without ultrasound guidance, and 20606 is the intermediate-joint code (wrist, elbow, ankle). The drug is reported with HCPCS J3301, triamcinolone acetonide, not otherwise specified, 10 mg, so a 40 mg dose is four units, not one. The NCCI Policy Manual, Chapter IV, also limits reporting to one unit per joint regardless of the number of bursae injected.100. A pain physician injects trigger points in the right trapezius, the right levator scapulae and the right rhomboid major muscles during one session. How is the service reported?
- A. 20553 with one unit, injection of single or multiple trigger points in three or more muscles
- B. 20553 with three units, because the descriptor counts each muscle group separately
- C. 20552 with three units, one unit for each muscle that received an injection
- D. 20552 for the first two muscles plus 20553 for the third muscle injected
Show answer & explanation
Answer: A
Trigger point injections are reported once per session by the number of muscles injected: 20552 for single or multiple trigger points in one or two muscles, and 20553 for single or multiple trigger points in three or more muscles. Three muscles therefore map to a single unit of 20553. Neither code is reported per muscle or per injection, so 20552 x 3 and 20553 x 3 overstate the service, and the two codes are never combined for one session because the muscle count selects one code or the other. The drug injected may be reported separately with the appropriate HCPCS J code when the physician supplied it.
2026 statistics
Key facts: CPC exam
- Questions
- 100
- Time limit
- 4h
- Passing score
- 70%
- Exam fee
- $425
- Governing body
- AAPC
This free CPC practice test has 159 original questions written to AAPC's official content outline, last checked against it on July 18, 2026, 100 of them listed on this page and the rest loaded by the drill. Every question shows a worked explanation, and nothing here requires a signup.
The questions are grouped under 18 outline areas: Coding Systems: ICD-10-CM, CPT and HCPCS, HCPCS Level II, ICD-10-CM, Coding Guidelines, Compliance and Regulatory, Pathology and Laboratory, Anatomy, Evaluation and Management, Radiology, Medical Terminology, Integumentary System (10000 Series), Musculoskeletal System (20000 Series), Respiratory, Cardiovascular, Hemic and Lymphatic Systems (30000 Series), Digestive System (40000 Series), Urinary, Genital, Maternity and Endocrine Systems (50000 Series), Nervous System (60000 Series), Medicine and Anesthesia.
As of 2026, the CPC exam fee is $425.
How the CPC practice bank covers the outline
159 questions across 18 outline areas — the same areas the page's sections use.
Counts are the live question bank, grouped by the outline area each question was written to.
Exam format and study resources
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CPC sample questions, explained
worked answers, not just the keyWhat you're practicing for
The Certified Professional Coder (CPC) exam from the AAPC is a 100-question, multiple-choice test administered in a four-hour format. According to AAPC, you must correctly answer at least 70 of those 100 questions to pass — a 70% cut score with no curve and no partial credit. That works out to roughly 2.4 minutes per question, which is why coders who know the conventions cold beat coders who look up everything.
One detail changes how you should practice: the CPC exam is open book, and candidates may reference approved code books during the examination. AAPC allows three code sets — CPT, ICD-10-CM, and HCPCS Level II — and for CPT, the AMA Professional Edition only is permitted, with no other publisher accepted. The exam fee is $425 for one attempt, so the goal of practice is to arrive knowing which book to open and why, not to burn clock hunting.
The ten questions below are convention-and-judgment items: the kind that test whether you understand why a rule exists, not just whether you can find a code. Work each one before reading the explanation. When you're ready for timed volume, take the full free CPC practice test.
Section 1: Choosing the right code set
Question 1 — Which system describes the procedure?
When clinical documentation specifies that a procedure was performed, which coding system should the coder select to describe the specific procedure and its technical components?
- ICD-10-CM, which categorizes all healthcare services
- CPT, which describes specific procedures, services, and technical components
- HCPCS Level II, which is used exclusively for all procedural coding
- ICD-10-PCS, which applies to all outpatient procedural coding
Correct answer: B. CPT codes are the primary system for describing procedures, services, and evaluation performed in outpatient settings; they identify what was done and how. ICD-10-CM codes diagnoses and reasons for the encounter, not the procedures themselves. HCPCS Level II supplements CPT for items and services not addressed in CPT. ICD-10-PCS applies to inpatient hospital procedures, not outpatient services covered by CPT.
Question 2 — A supply item that isn't in CPT
A coder is selecting a code for a supply item not found in the CPT codebook. Where should the coder look for the appropriate code?
- The diagnostic code section of ICD-10-CM
- HCPCS Level II, which is designed to identify supplies, equipment, and services not included in CPT
- A CPT unlisted code, as all supplies are ultimately coded in CPT
- The local insurance carrier policy for that specific item
Correct answer: B. HCPCS Level II codes exist specifically to identify supplies, equipment, orthotic devices, and services not included in the CPT system. ICD-10-CM is for diagnoses, not supplies. While CPT unlisted codes exist, they are not the first choice when a specific HCPCS Level II code is available. Insurance policies may vary, but the standard coding reference is the HCPCS system.
Questions 1 and 2 are a matched pair, and they explain why AAPC requires three code books on the desk rather than one. Knowing which of the three to open is itself an exam skill.
Section 2: ICD-10-CM conventions
Question 3 — What an Excludes note actually means
Which principle explains why an ICD-10-CM excludes note indicates that two conditions should not be coded together for a single encounter?
- The conditions represent mutually exclusive clinical presentations that should not coexist in the same patient
- Coding both conditions would increase the reimbursement amount inappropriately
- Insurance carriers have determined that only one condition can be treated per visit
- The second condition is always less severe and does not require documentation
Correct answer: A. Excludes notes in ICD-10-CM indicate that two conditions are mutually exclusive clinically and should not be coded together because they cannot logically occur simultaneously in the same patient. These notes are based on medical logic and concept definitions, not reimbursement rules or severity hierarchy. A patient could be treated for multiple conditions in one visit, but the excludes note prevents coding incompatible diagnoses that cannot coexist.
Question 4 — The 'Code First' instruction
A coder must apply the 'Code First' instruction found in the ICD-10-CM tabular list for one of the patient's conditions. What does this coding convention require?
- The specified underlying condition must be coded before the condition listed under the 'Code First' note
- The condition should be the first code submitted to the insurance carrier
- The provider must document the condition before any treatment can be provided
- Only one of the two related conditions can be coded in the claim
Correct answer: A. A 'Code First' instruction indicates that an underlying or related condition must be sequenced (listed) before the code with the note. This ensures that the causal or foundational condition is identified first, followed by the manifestation or secondary condition. The 'Code First' note does not mean it must be submitted first to the insurer — sequencing refers to the order of codes on the claim form. Both conditions are coded; the 'Code First' note only specifies the correct order.
Notice the shared trap in both items: three of the four distractors reframe a clinical or structural convention as a payer rule. On the CPC exam, when a distractor explains an ICD-10-CM convention in terms of reimbursement, it is almost always wrong.
Section 3: CPT conventions and edits
Question 5 — Why modifiers exist
A coder is applying a modifier to a CPT code. Which of the following best describes the primary purpose of using modifiers in procedural coding?
- To increase the reimbursement amount for the procedure
- To provide additional information that clarifies or changes the meaning of the base procedure code
- To reduce the total number of codes needed on a claim
- To indicate that the procedure was performed incorrectly
Correct answer: B. Modifiers provide additional information about the circumstances, location, or extent of a procedure that changes or clarifies the meaning of the base code — for example, indicating that a procedure was bilateral or performed on the left side. While some modifiers may affect reimbursement as a consequence of accurate coding, that is not their primary purpose. Modifiers do not reduce code counts or indicate errors; they enhance specificity.
Question 6 — What NCCI edits are for
What is the primary function of the National Correct Coding Initiative (NCCI) edits in procedural coding?
- To prevent unbundling by identifying codes that should not be reported together on the same claim
- To establish the maximum reimbursement amount for all procedures
- To replace CPT codes with HCPCS Level II codes
- To determine the medical necessity of all surgical procedures
Correct answer: A. NCCI edits are designed to prevent unbundling — the inappropriate separation and coding of components that should be reported as a single comprehensive code. These edits identify code pairs that should not be reported together because one code includes the work of the other. NCCI does not set reimbursement amounts, replace code systems, or determine medical necessity; it enforces proper code combination according to clinical and billing conventions.
Question 7 — The word 'includes' in a CPT descriptor
A coder selects a CPT code for a procedure with multiple components (e.g., evaluation, preparation, and execution). The CPT descriptor for the code states 'includes.' What does this convention tell the coder?
- The components listed are included in the code value and should not be separately reported
- The components listed are optional and may be reported separately if performed
- Additional component codes can be used to increase the total reimbursement
- The provider has discretion to report components separately or bundled
Correct answer: A. When the CPT descriptor uses 'includes,' it means that specific components of the service are bundled into that single code and should not be separately reported. This prevents unbundling and ensures accurate reimbursement for the complete service. The 'includes' language is prescriptive, not optional; the coder must follow it to comply with coding conventions. Components are not optional, and attempting to report them separately would violate NCCI edits and coding rules.
Questions 6 and 7 attack unbundling from two directions — the edit that catches it after the fact, and the descriptor language that should have prevented it. This is also the strongest argument for the AMA Professional Edition requirement: the descriptor and its parenthetical guidance are the thing you're being tested on, and AAPC permits no substitute publisher for CPT.
Section 4: Medical necessity, documentation, and queries
Question 8 — Linking diagnosis to procedure
A coder must establish the medical necessity linkage between a reported procedure and the patient's documented condition. What coding principle does this reflect?
- The diagnosis (ICD-10-CM code) must support the medical reasonableness of the reported procedure (CPT code)
- The diagnosis and procedure codes must use the same numbering system
- Procedures are always medically necessary if they are reported in CPT
- The provider's documentation must explicitly state the word 'necessary' for the procedure
Correct answer: A. Medical necessity linkage ensures that the diagnosis supports why the procedure was performed. The diagnosis code (from ICD-10-CM) justifies the medical reasonableness of the procedure code (from CPT). This is a fundamental compliance requirement. The two systems do not need to use the same numbering; they are separate systems that work together to paint a complete clinical and billing picture. Medical necessity is inferred from appropriate diagnosis documentation, not necessarily stated using that exact term.
Question 9 — Coding beyond the documentation
A coder reviews a claim where the physician documented 'right knee pain' in the chief complaint but ordered an MRI of the right ankle. The coder coded for both knee and ankle pain. Which documentation principle has the coder violated?
- The coder should code only what is clearly documented and supported by test orders or findings, not infer additional diagnoses
- The coder should always code both sites whenever imaging of multiple joints is documented
- The coder should code the site of the imaging study regardless of what the physician documented
- The coder should query the physician for clarification only if the documentation is incomplete
Correct answer: A. A coder must code only diagnoses that are clearly documented and supported by clinical evidence in the record — coding ankle pain when only knee pain was documented and no ankle findings exist violates the principle of coding what is substantiated. Choice B is incorrect because the test site alone doesn't justify coding an undocumented diagnosis. Choice C incorrectly prioritizes the imaging location over the documented clinical picture. Choice D is partially correct but misses the core principle: the coder should not infer diagnoses in the first place; a query is for clarification of ambiguous documentation, not for permission to code what isn't there.
Question 10 — Proper query protocol
Under the query process, a coder identifies a discrepancy between a documented diagnosis and the clinical findings. Which action best exemplifies appropriate query protocol?
- Code the diagnosis as documented while simultaneously asking the physician to clarify the clinical basis
- Refrain from coding the questionable diagnosis, document the discrepancy, and submit a formal query requesting clarification before claim submission
- Code the diagnosis that best matches the clinical findings and note the discrepancy in the medical record
- Contact the physician verbally to obtain verbal confirmation and then code based on that conversation
Correct answer: B. Proper query protocol requires holding the claim and submitting a documented query to the physician before coding questionable items — this creates an audit trail and ensures the final coding reflects the physician's intent after review. Choice A violates the principle by coding before obtaining clarity. Choice C, while well-intentioned, imposes the coder's clinical judgment over the physician's documented statement. Choice D, though it seeks clarification, bypasses the formal documentation trail that compliance requires; verbal conversations lack the written evidence necessary for audit defense.
How to score yourself
Ten questions is too small a sample to predict a pass. But the CPC standard is fixed and unforgiving: 70 of 100 correct. If you missed three or more of the ten above, the gap is conventions, not code lookup — reread the Excludes and Code First guidance in ICD-10-CM and the parenthetical instructions in the AMA Professional Edition rather than drilling more codes.
Two habits transfer directly to exam day. First, tab your books before you sit; the exam is open book precisely so that fluency with the references is part of what's measured. Second, practice under the real clock — 240 minutes for 100 questions leaves no room for a second full pass over the whole exam.
After you pass
Certification is not a one-time event. AAPC requires 36 CEUs every two years to keep the CPC credential active, and maintaining a current AAPC membership is required to keep the certification active. Budget for that alongside the $425 first-attempt exam fee when you plan your path into coding.
Ready for a full-length run? Take the full free CPC practice test and time yourself.
Sources
- 1.CPC Certification Exam — AAPC (accessed Jul 6, 2026)
- 2.Continuing Education Unit (CEU) Policy (AAPC) — AAPC (accessed Jul 18, 2026)
- 3.What code books do I need for my AAPC certification exam? (AAPC Support) — AAPC (accessed Jul 18, 2026)
- 4.How long is the exam? (AAPC Support) — AAPC (accessed Jul 18, 2026)
- 5.What score do I need to pass the CPC exam? (AAPC Support) — AAPC (accessed Jul 18, 2026)
Official sources
Primary documents used to verify the exam details shown on this page.
- CPC Certification ExamAAPCaapc.com
- What code books do I need for my AAPC certification exam? (AAPC Support)AAPCaapc.com
- Continuing Education Unit (CEU) Policy (AAPC)AAPCaapc.com
- What score do I need to pass the CPC exam? (AAPC Support)AAPCaapc.com
- How long is the exam? (AAPC Support)AAPCaapc.com
Last verified against the official exam content outline:
Frequently asked questions
Are these practice questions like the real CPC exam?
Yes — they are written in the same multiple-choice format the CPC uses and cover the same content areas, including CPT coding by body system, ICD-10-CM, HCPCS Level II, anatomy, and coding guidelines. The real exam is 100 multiple-choice questions, and our questions mirror that scenario-based style where you pick the correct code or code combination. They are practice items, not leaked exam content, so treat them as training for the skill rather than memorization targets.
How many CPC practice questions should I do, and how often?
Aim for a steady routine — a focused set of 20 to 30 questions most days — rather than occasional marathon sessions. As your exam date approaches, work up to full-length timed sets so you build the stamina the 4-hour exam demands. Consistency matters more than volume: reviewing why you missed a question teaches more than rushing through extra ones.
How should I use the answer explanations?
Read the explanation on every question, including the ones you got right, because a correct guess can hide a gap. For missed questions, trace the explanation back to the guideline or code-book convention it relies on, then look that rule up in your own manuals so you can find it again under exam conditions. Keep a running list of the guidelines that trip you up and re-drill those topics.
How do I know when I'm ready for the real CPC exam?
A good readiness signal is consistently scoring comfortably above the 70% passing mark on full-length, timed practice sets — not just on short topic drills. You should also be finishing 100-question sets within the 4-hour window with time left to review flagged items. If either your score or your pacing falls short, keep drilling your weakest sections before you book the exam.
Are these CPC practice questions really free? Do I need to sign up?
Yes, they're completely free, and no signup or account is required. You can start answering questions immediately, see the correct answer and a full explanation after each one, and come back as often as you like. There's no question limit and no paywall partway through.
How should I practice for the CPC exam?
Practice with timed, full-length sets that mirror the real thing: 100 multiple-choice questions in 240 minutes, which works out to about 2.4 minutes per question. Because the CPC exam is open book, you should practice with the same approved code books you'll bring in, so that looking up a code becomes muscle memory rather than a time sink. AAPC sets the passing score at 70 percent, so track your accuracy across practice sets and treat anything below that as a signal to drill weak areas rather than move on.
What are CPC exam questions actually like?
They are multiple-choice questions built around the three code sets used in the exam — CPT, ICD-10-CM, and HCPCS Level II — so most items ask you to select the correct code or code combination for a described scenario. All 100 questions are multiple choice, meaning there is no free-text coding and no penalty for making an educated selection when you are unsure. Practicing by code set is the most efficient way to prepare, since every question ultimately traces back to one of those three books.
How many questions do I need to get right to pass?
You need at least 70 correct answers out of 100, which AAPC states as the threshold for passing. That corresponds to the published minimum passing score of 70 percent, so there is no curve or scaled scoring to hope for. In practice this means you can miss up to 30 questions — a useful buffer, but not one worth spending on questions you could have looked up in your code books.
Which code books can I bring, and how should I practice with them?
You may bring approved code books for the three code sets — CPT, ICD-10-CM, and HCPCS Level II — but for CPT, AAPC allows the AMA Professional Edition only, and no other publisher is permitted. Buy that exact edition early and use it for every practice question so your tabs, margin notes, and index habits are already in place on exam day. Since the exam is open book across a 4-hour sitting, the difference between passing and failing is usually lookup speed, not whether you own the right book.
How much does it cost to sit the exam, and what happens if I don't pass?
AAPC lists the CPC exam fee at $425 for one attempt, so a retake is a real financial cost on top of the study time. That makes timed practice worthwhile before you register: if you are not clearing 70 correct out of 100 consistently on full-length practice sets, it is usually cheaper to keep drilling than to book the seat. Treat your practice score as the gate, since the exam applies the same 70 percent standard with no partial credit.
After I pass, what keeps the credential active?
You must complete 36 CEUs every two years and maintain a current AAPC membership to keep the CPC certification active. AAPC ties the standard renewal cycle to that two-year window, so the continuing-education requirement is ongoing rather than a one-time hurdle after the exam. Planning for roughly 18 CEUs a year spreads the workload instead of leaving a scramble at the end of the cycle.