Medicare Copay: Why You Owe a Fixed Fee

What This Means

Your Explanation of Benefits shows a copay — a fixed dollar amount you owe for a covered service. On the statement this appears as code PR-3, “Co-payment Amount” — the PR group code means “Patient Responsibility”. This is not a denial. Your plan approved the service and paid its share. The copay is your portion.

Copays are most common in Medicare Advantage (Part C) plans. Original Medicare (Parts A and B) generally uses coinsurance (a percentage) rather than copays, though Part A has some fixed per-day costs for extended hospital stays.

Why This Happens

• Your Medicare Advantage plan charges copays for covered services. Most Medicare Advantage plans use copays — flat fees that vary by service type. For example, you might pay $20 for a primary care visit and $40 for a specialist visit.
• Copay amounts vary by service. Different services have different copay amounts. A routine office visit costs less than an emergency room visit or outpatient procedure. Your plan’s Summary of Benefits lists the copay for each type of service.
• In-network and out-of-network copays differ. If your plan is a PPO, you may have higher copays for out-of-network providers than for in-network ones.
• Some services have no copay. Many preventive services — like annual wellness visits, flu shots, and certain screenings — have $0 copays under Medicare.

Should You Appeal?

What To Do Next

1. Verify the copay amount. Check your plan’s Summary of Benefits or Evidence of Coverage to confirm the correct copay for the service you received. If the amount on your bill doesn’t match, call your plan’s member services.
2. Check if the service should be free. Many preventive services are covered at $0 under Medicare. If you were charged a copay for a wellness visit, flu shot, or preventive screening, ask your plan why.
3. Track your out-of-pocket spending. Medicare Advantage plans have an annual in-network out-of-pocket maximum — $9,250 or less in 2026, a ceiling CMS sets each year under 42 CFR § 422.100(f)(4) and reported by KFF; many plans go lower. Once you reach that limit, “the plan pays 100% of your covered health services for the rest of the calendar year”. Keep track of what you have paid.
4. Look into financial assistance if needed. If copays are a burden, you may qualify for a Medicare Savings Program, Extra Help (for Part D drug copays), or other state assistance. Contact your SHIP at shiphelp.org or call 1-800-MEDICARE (1-800-633-4227).
5. Compare plans during Open Enrollment. If your copays are consistently high, you may find a different Medicare Advantage plan with lower cost-sharing during the annual Medicare Open Enrollment Period (October 15 - December 7).

Sources

• Medicare.gov: Medicare Costs at a Glance
• Medicare.gov: Health Plans (Medicare Advantage)
• KFF: Medicare Advantage in 2026 — source for the 2026 in-network out-of-pocket ceiling of $9,250. CMS sets the limit annually under 42 CFR 422.100(f)(4) but publishes the figure in a plan-facing memorandum rather than on its public Rate Announcement page, which states no dollar amount.
• X12: Claim Adjustment Reason Codes — official CARC code definitions

Frequently Asked Questions