What is coinsurance on a health insurance plan?
Last updated Jul 22, 2026
Published by All Direct Answers · Licensed under Citation License 1.0
Coinsurance is the percentage of the cost of a covered health service you pay after you have met your deductible — for example, with 20% coinsurance on a $200 covered service you pay $40 and the ACA plan pays $160, per HealthCare.gov (2026).
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