What does 20 coinsurance mean after deductible?

What does 20 coinsurance mean after deductible?

The percentage of costs of a covered health care service you pay (20%, for example) 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.