A Medicare copay is a fixed dollar amount you pay out of pocket each time you receive a specific healthcare service, like a doctor visit, hospital outpatient procedure, or prescription drug. The amount varies depending on which part of Medicare covers the service and, if you have a Medicare Advantage or Part D plan, the specific plan you’ve chosen. Copays are one of three main out-of-pocket costs in Medicare, alongside deductibles (what you pay before coverage kicks in) and coinsurance (a percentage of the bill rather than a flat fee).
Copays vs. Coinsurance in Medicare
These two terms get mixed up constantly, but the difference matters for your wallet. A copay is a set dollar amount, like $20 for a doctor visit. Coinsurance is a percentage of the total cost, like 20% of a surgery bill. Original Medicare (Parts A and B) relies heavily on coinsurance rather than flat copays. Medicare Advantage plans (Part C) tend to use flat copays more often, which can make costs easier to predict.
Under Original Medicare Part B, you typically pay 20% coinsurance for each covered service after meeting your annual deductible, as long as your provider accepts the Medicare-approved amount as full payment. That 20% can add up quickly for expensive procedures. For hospital outpatient services, though, Medicare charges a separate copayment on top of or instead of that coinsurance, and that copayment can actually make outpatient hospital services more expensive than the same service in a doctor’s office.
Part A: Hospital and Facility Copays
Part A covers hospital stays, skilled nursing care, and some home health services. For 2025, the inpatient hospital deductible is $1,676, which covers the first 60 days of a hospital stay in a single benefit period. After that, daily copays kick in: $419 per day for days 61 through 90, and $838 per day if you dip into your lifetime reserve days (a one-time bank of 60 extra hospital days).
Skilled nursing facility stays follow a similar structure. The first 20 days are fully covered after the Part A deductible. Starting on day 21, you pay a daily copay for each day through day 100. In 2026, that daily amount is $217. After day 100, Medicare stops covering skilled nursing entirely, so the full cost shifts to you or a supplemental plan.
Part B: Doctor Visits and Outpatient Care
Original Medicare Part B doesn’t typically use flat copays for regular doctor visits. Instead, you pay 20% coinsurance on most covered services after your annual deductible. But there’s an important exception: hospital outpatient departments. When you receive care in a hospital outpatient setting, you’ll pay a copayment to the hospital for each service. This copayment is capped so it won’t exceed the Part A hospital deductible amount, but it still means the same procedure can cost you more at a hospital outpatient facility than at a standalone doctor’s office.
If you have a Medicare Advantage plan instead of Original Medicare, your Part B services will almost certainly come with flat copays rather than percentage-based coinsurance. A primary care visit might carry a $10 or $20 copay, while a specialist visit could be $30 to $50. These amounts vary by plan and change each year, so checking your plan’s Summary of Benefits before scheduling appointments helps avoid surprises.
Part D: Prescription Drug Copays
Part D plans organize drugs into tiers, and each tier carries a different copay or coinsurance amount. The structure generally looks like this:
- Tier 1 (lowest copay): most generic drugs
- Tier 2 (medium copay): preferred brand-name drugs
- Tier 3 (higher copay): non-preferred brand-name drugs
- Specialty tier (highest copay): very high-cost drugs
The exact dollar amounts differ from one Part D plan to another. A generic drug might cost you $0 to $15 per fill in one plan and $5 to $20 in another. Brand-name drugs at higher tiers often use coinsurance (a percentage) rather than a flat copay, which means your cost rises with the drug’s price. When comparing Part D plans during open enrollment, looking at how your specific medications are tiered is more useful than comparing the plans’ general copay structures.
Services With No Copay at All
Medicare covers a long list of preventive services at zero cost to you, with no copay, coinsurance, or deductible, as long as you see a provider who accepts Medicare assignment. These include annual wellness visits, screening mammograms, colonoscopies and other colorectal cancer screenings, cardiovascular disease screenings, diabetes screenings, depression screenings, glaucoma tests, lung cancer screenings, prostate cancer screenings, and HIV screenings. Vaccines for flu, COVID-19, pneumonia, and hepatitis B are also covered at $0.
The one-time “Welcome to Medicare” preventive visit, available within your first 12 months of Part B enrollment, is also free. Counseling services for tobacco use, alcohol misuse, obesity, and sexually transmitted infections carry no copay either. The key requirement is that the provider accepts assignment. If they don’t, you may owe out-of-pocket costs even for these preventive services.
How Medigap Plans Reduce Your Copays
If you have Original Medicare, a Medigap (Medicare Supplement) policy can cover some or all of the copays and coinsurance you’d otherwise pay. Most Medigap plans, including the popular Plans G, C, D, and F, cover 100% of Part B coinsurance and copayments. Plans K and L cover 50% and 75%, respectively.
Plan N is a special case. It covers 100% of Part B coinsurance, but it has its own small copays for certain office visits and some emergency room visits. For many people, the lower monthly premium of Plan N offsets those occasional copays, but it depends on how frequently you use outpatient services.
Financial Help for Low-Income Beneficiaries
If your income and resources are limited, the Extra Help program (also called the Low-Income Subsidy) dramatically reduces Part D drug copays. Under Extra Help in 2026, you pay no premium, no deductible, and copays are capped at $5.10 for each generic drug and $12.65 for each brand-name drug. Once your total drug costs for the year reach $2,100, your copays drop to $0 for the rest of the year. If you also qualify for the Qualified Medicare Beneficiary (QMB) program through Medicaid, your copays are capped even lower, at no more than $4.90 per covered drug.
Eligibility for Extra Help is based on income and asset limits that change annually. You can apply through Social Security’s website or your local Social Security office. Many people who qualify don’t realize it, so it’s worth checking even if you’re unsure about your eligibility.
Medicare Advantage Out-of-Pocket Limits
One significant difference between Original Medicare and Medicare Advantage is that Advantage plans are required to set a maximum out-of-pocket limit each year. Once your copays, coinsurance, and deductibles hit that cap, the plan covers 100% of your costs for the rest of the year. Original Medicare has no such cap, which is one reason many people on Original Medicare pair it with a Medigap policy. The specific out-of-pocket maximum varies by plan, and Medicare sets an upper ceiling that no Advantage plan can exceed.