What is Coinsurance?

Coinsurance (or co-insurance) is the split of charges after the deductible has been met on a PPO health insurance plan.

Often stated as 80/20, 70/30 or 100/0, with the first number being the percentage that the insurance company will pay. The policy holder is responsible for the percentage indicated by the second number

Sometimes you will see the term copay (or co-pay) used to define the split of charges. More often copay would be used to describe a flat dollar amount for a service before the deductible is met, and coinsurance being the percentage split after the deductible.


Also see: How does a PPO health insurance plan work?
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