Vedanth Bhartee
Writer · Reviewed by Richard ChanUpdated Jun 12, 2026
2 min read
A copayment is a fixed dollar amount a Medicare beneficiary pays for a specific medical service or prescription drug, typically due at the time of the visit.
Medicare Advantage plans often use a copayment structure for doctor visits and hospital stays instead of the standard 20% coinsurance used by Original Medicare.
Copayments for prescription drugs in Medicare Part D plans vary depending on the drug's tier on the plan's formulary, with lower tiers having smaller copays.
If you've ever paid a flat fee at the doctor's office — say, $20 for a primary care visit — you've already experienced a copayment firsthand. Copays are one of the most familiar and straightforward forms of cost-sharing in health insurance, offering predictability at the moment you actually need care. Understanding how they work, and how they fit into your plan's broader cost structure, helps you budget smarter and avoid surprises on your medical bills.
A copayment is a predetermined, flat fee that an insured individual must pay out of pocket for specific covered medical services. Unlike coinsurance, which is a percentage of the total cost and can therefore vary widely depending on what a service costs, a copayment remains fixed regardless of the actual price of the service. You know exactly what you'll owe before you even walk through the door.
The copayment amount is typically stated in the insurance policy, and it can vary depending on the type of medical service received. For example, a health insurance plan might have different copayment amounts for primary care visits, specialist visits, prescription drugs, or emergency room visits.
Suppose Jane has a health insurance plan with a $20 copayment for primary care visits. When Jane visits her primary care physician for a routine check-up, she pays the $20 copayment directly to the healthcare provider at the time of her visit. The insurance company covers the remaining cost of the visit. It’s important to note that copayments are typically required for each covered service received, and they do not count toward the plan’s deductible. Once the deductible is met, other forms of cost-sharing, such as coinsurance, may apply.
A copayment, or copay, is a fixed amount that an insured individual must pay out of pocket for specific covered medical services. By providing predictable and affordable cost-sharing, copayments play a crucial role in managing healthcare expenses for both the insured and insurance companies. When comparing Medicare Advantage plans or Part D drug plans, it's worth looking closely at the copay structure — especially for the services and medications you use most often, since these fixed amounts can add up meaningfully over the course of a year.