What Is Coinsurance?

A policy provision requiring the insured to maintain insurance equal to a stated percentage of the property value, with the insured bearing a proportional share of losses if underinsured. This encourages adequate coverage levels.

Coinsurance across 4 exams

Coinsurance appears on the following exams. Each defines it in the context candidates are tested on:

Property & Casualty
A policy provision requiring the insured to maintain insurance equal to a stated percentage of the property value, with the insured bearing a proportional share of losses if underinsured. This encourages adequate coverage levels.
Health Insurance
The percentage of covered medical costs the insured pays after meeting the deductible, while the insurer covers the remaining percentage. For example, 80/20 coinsurance means the insurer pays 80% and the insured pays 20% of eligible expenses.
Personal Lines
A clause requiring you to maintain insurance equal to a specified percentage of the property's replacement value; if underinsured, the insurer pays a reduced claim amount proportional to your share of the loss. This directly impacts claim recovery and is heavily tested because it penalizes underinsurance.
Health-Only Insurance
A cost-sharing arrangement in which the insured and insurer split covered expenses by a set percentage (for example, 80/20) after the deductible is met. The insured's share typically continues until an out-of-pocket maximum is reached.