Medicare Advantage Charged You Past the Out-of-Pocket Max

What This Means

Your Explanation of Benefits or a provider bill shows a copay, coinsurance, or other cost-sharing amount — but you have already reached your Medicare Advantage plan’s annual out-of-pocket maximum (sometimes called the MOOP). Once you hit that limit, your plan is required to pay 100% of covered services for the rest of the calendar year. You should not owe anything more.

If you are being billed after reaching your maximum, the charge is almost certainly an error. This can happen because of a lag in claims processing, a billing system that has not caught up with your spending totals, or a simple mistake by the plan or provider. Either way, you should not have to pay it.

This protection applies only to Medicare Advantage plans. Original Medicare (Parts A and B) does not have an out-of-pocket maximum, so if you are enrolled in Original Medicare without a Medicare Advantage plan, this page does not apply to your situation.

Why This Happens

• Claims processing delay. Your plan may not have finished processing earlier claims when the new bill was generated. Once those older claims post, your out-of-pocket total will update and the charge should be removed.
• Provider billing system is out of sync. Your doctor’s office or hospital may not know you have hit your maximum. They bill based on the cost-sharing rules in your plan, and it takes time for the plan to inform them.
• The plan made a tracking error. Sometimes a plan miscalculates your running out-of-pocket total — for example, by failing to count a copay you already paid earlier in the year.
• The service may not count toward the maximum. Certain costs — like monthly premiums, out-of-network care in some plans, or non-covered services — do not count toward the out-of-pocket maximum. If the plan classified the service in one of these categories, it may have applied cost-sharing even though you believe you have hit the limit.
• You may be close but not quite there. It is worth double-checking your exact out-of-pocket total with the plan. Sometimes a claim you expected to push you past the maximum was reduced, denied, or has not yet been processed.

Should You Appeal?

What To Do Next

1. Confirm your out-of-pocket total. Call the member services number on your Medicare Advantage plan card and ask for your year-to-date out-of-pocket spending. You can also log into your plan’s website or review your most recent Explanation of Benefits. Write down the exact number they give you and the date you called.
2. Compare the total to your plan’s maximum. Look up your plan’s annual out-of-pocket maximum in your Summary of Benefits or Evidence of Coverage document. CMS’s 2026 mandatory ceilings — the most any Medicare Advantage plan can charge — are $9,250 in-network and $13,900 combined in-network plus out-of-network for PPO plans (per the CMS Final CY 2026 Part C Bid Review Memorandum, implementing 42 CFR § 422.100(f)). Many plans set their own MOOP lower than these ceilings.
3. Call your plan and request a correction. If your spending is at or above the maximum, call member services and tell them you were billed cost-sharing after reaching the out-of-pocket limit. Ask them to reprocess the claim with zero cost-sharing and issue a refund if you already paid. Get a reference number for the call.
4. If you already paid the bill, request a refund. If you paid the provider directly, you may need to ask the plan to reprocess the claim first. Once the plan confirms your cost-sharing should be zero, the provider should refund the overpayment. Keep receipts and records of what you paid.
5. File a formal appeal if the plan does not correct it. If member services does not resolve the issue, file a written appeal within 65 days of the date on your Explanation of Benefits. Include a copy of the EOB, your out-of-pocket spending summary, and a simple letter stating you have reached the annual maximum and should not owe cost-sharing.
6. Contact your State Health Insurance Assistance Program (SHIP). If you need help navigating the process, a SHIP counselor can review your documents, help you understand your plan’s rules, and assist with an appeal — all for free. Find your local SHIP at shiphelp.org or call 1-800-MEDICARE (1-800-633-4227).

Sources

• 42 CFR § 422.100(f) — Annual maximum out-of-pocket amount for Medicare Advantage plans — the regulation that requires every MA plan to set a MOOP and stop charging cost-sharing for in-network Part A/B services once you reach it.
• CMS: Medicare Advantage Rates & Statistics — CY 2026 Announcements and Documents — the CMS landing page that publishes the CY 2026 mandatory MOOP and Cost Sharing Limit Calculations memorandum used to derive the $9,250 / $13,900 ceilings cited above.
• Medicare.gov: Medicare Advantage Plans — beneficiary-facing overview of Medicare Advantage including the out-of-pocket maximum.
• SHIP — Free Medicare Counseling — state-by-state SHIP locator for free, unbiased help with Medicare Advantage appeals and plan questions.

Frequently Asked Questions