Coinsurance is the percentage of costs of a covered healthcare service that you pay after you’ve paid your deductible.
Let’s say your health insurance plan’s allowed amount for an office visit is $100 and your coinsurance is 20%.
- If you've paid your deductible: You pay 20% of $100, or $20. The insurance company pays the rest.
- If you haven't met your deductible: You pay the full allowed amount, $100.