A copayment
A copayment is a set sum of money that a patient must pay toward their medical bills. In many health insurance policies, a patient is responsible for all expenses up front until their deductible has been met. A patient makes a copayment once the deductible has been met.
Plans may also impose a coinsurance and copayment mix. For instance, you can have coinsurance for a stay in hospital yet a copayment for prescribed drugs. Copayments and coinsurance are sometimes "stacked" by insurance plans. For instance, you may pay a $100 basic copayment for a hospital stay in addition to 20% of the costs for any healthcare services you utilize while there.
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