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. The insurance company pays the rest. If you haven't met your deductible: You pay the full allowed amount, $100. Generally speaking, plans with low monthly premiums have higher coinsurance, and plans with higher monthly premiums have lower coinsurance.
A fixed amount ($20, for example) you pay for a covered health care service after you've paid your deductible. Let's say your health insurance plan's allowable cost for a doctor's office visit is $100. Your copayment for a doctor visit is $20. If you've paid your deductible: You pay $20, usually at the time of the visit. If you haven't met your deductible: You pay $100, the full allowable amount for the visit. Copayments (sometimes called "copays") can vary for different services within the same plan, like drugs, lab tests, and visits to specialists. Generally plans with lower monthly premiums have higher copayments. Plans with higher monthly premiums usually have lower copayments.
The amount you pay for covered health care services before your insurance plan starts to pay. With a $2,000 deductible, for example, you pay the first $2,000 of covered services yourself. After you pay your deductible, you usually pay only a copayment or coinsurance for covered services. Your insurance company pays the rest. Many plans pay for certain services, like a checkup or disease management programs, before you've met your deductible. Check your plan details. All Marketplace health plans pay the full cost of certain preventive benefits even before you meet your deductible. Some plans have separate deductibles for certain services, like prescription drugs. Family plans often have both an individual deductible, which applies to each person, and a family deductible, which applies to all family members. Generally, plans with lower monthly premiums have higher deductibles. Plans with higher monthly premiums usually have lower deductibles.