Medicare advantage plan denial rates are probably not why you opened this page. Something else happened first. A letter came from the plan. Your mother’s rehab stay ends Friday. Or the plan said no to the surgery her doctor already scheduled. That letter is almost always the Notice of Denial of Medical Coverage (or Payment), Form CMS-10003-NDMCP. Buried in it is a deadline. This week, that deadline is the only number in your house that matters.
- What “medicare advantage plan denial rates” Actually Means
- The Deadline You Cannot Miss
- How to Start a Medicare Advantage Plan Denial Rates Appeal
- What to Put in the File
- If the First Level Says No
- Mistakes That Sink a Medicare Advantage Plan Denial Rates Appeal
- Frequently Asked Questions
- Key Takeaways: Medicare Advantage Plan Denial Rates
- Where to Get Free Help
- Official Sources & Resources
- Related Guides
Still, medicare advantage plan denial rates explain how you ended up here. Denials are not rare. Neither are reversals. This guide names each notice, each form number, who decides, and how many days you get. It gives you the free phone numbers to call today. It describes the process only. It does not promise any result, and it is not legal advice.
What “medicare advantage plan denial rates” Actually Means
A denial rate is the share of prior authorization requests a plan turns down. Plans must now publish these numbers on their own websites each year. That rule came from CMS in 2024. So medicare advantage plan denial rates are finally something a family can look up.
KFF’s review of 2025 data from the 14 largest insurers found an average standard denial rate near 12 percent. It ranged widely by company, roughly 5 percent to 17 percent. Post-acute care is harsher. Federal watchdog reports found much higher denial shares for long-term care hospitals and inpatient rehab than for other services.
Here is the part that should shape your next move. KFF’s analysis of CMS data found roughly 80 percent of appealed prior authorization denials get overturned. Very few denials are ever appealed. Confirm any specific figure before you rely on it. Ask 1-800-MEDICARE, or check your own plan’s posted metrics page.
So read medicare advantage plan denial rates this way. A denial is a first opinion, not a final one. It is a step in a process with rules attached. Those rules are in 42 CFR Part 422, Subpart M.
The Deadline You Cannot Miss
For a standard denial, the clock is 60 calendar days. It runs from your receipt of the written organization determination notice. Receipt is presumed to be 5 calendar days after the date printed on the notice. That is the rule in 42 CFR 422.582.
The fast-track clock is much shorter. If covered care is ending, you get a Notice of Medicare Non-Coverage (NOMNC), Form CMS-10123. Call the BFCC-QIO by noon of the day before coverage ends. See Medicare’s fast appeals page.
| Step | Notice or form | Who decides | Your deadline to file | Their deadline to decide |
|---|---|---|---|---|
| Initial request | Organization determination | Your plan | N/A | 72 hours expedited; 7 calendar days standard (as of Jan 1, 2026) |
| Level 1 | Reconsideration; denial arrives on CMS-10003-NDMCP | Your plan | 60 calendar days from receipt of the notice | 30 days standard; 72 hours expedited; 60 days for payment |
| Level 2 | IRE reconsideration | Independent Review Entity under CMS contract | None — the plan must forward it automatically | 30 days standard; 72 hours expedited |
| Level 3 | ALJ hearing (OMHA) | Administrative Law Judge | 60 days from the IRE decision | 90 days target; backlogs are common |
| Level 4 | Council review | Medicare Appeals Council | 60 days from the ALJ decision | 90 days target |
| Level 5 | Judicial review | Federal district court | 60 days from the Council decision | None set |
| Care ending | NOMNC CMS-10123, then DENC CMS-10124 | BFCC-QIO | Noon the day before coverage ends | 72 hours |
| Hospital discharge | Important Message from Medicare, CMS-R-193 | BFCC-QIO | By midnight of the planned discharge day | Generally within 1 day of getting records |
Levels 3 and 5 also carry a minimum dollar amount in controversy. It changes every year. Do not guess it. Confirm the current figure with OMHA or 1-800-MEDICARE before you count on that level.
How to Start a Medicare Advantage Plan Denial Rates Appeal
Work in order. Do not skip a step because the numbers behind medicare advantage plan denial rates look discouraging.
First, find the denial notice. It is Form CMS-10003-NDMCP. Since January 1, 2026, plans must state a specific clinical reason for the denial. Copy that reason word for word. You will answer it directly.
Second, decide standard or expedited. Ask for expedited if waiting could seriously harm health. Your doctor can request it for you. Expedited requests are decided in 72 hours under 42 CFR 422.584.
Third, file the Level 1 reconsideration with the plan. Use the address, fax and phone printed on the notice itself. Not the customer service line. Call to confirm receipt and write down the reference number.
Fourth, appoint a representative if you are the adult child. Use Form CMS-1696, Appointment of Representative. Without it, the plan may refuse to speak with you. See Medicare’s appeals in health plans page.
Fifth, get free help the same day. Call 1-800-MEDICARE (1-800-633-4227), TTY 1-877-486-2048. Call your State Health Insurance Assistance Program at 1-877-839-2675. Call the Medicare Rights Center helpline at 1-800-333-4114.
What to Put in the File
The plan denied a request based on a record. Your job is to complete that record. Send the chart notes, therapy evaluations, imaging reports and medication list. Include the referring order and any prior failed treatments.
The doctor’s letter carries the most weight. Ask for one page. It should name the diagnosis, the requested service, and why alternatives are not appropriate. It should answer the plan’s stated denial reason directly.
Ask the doctor to address the plan’s own criteria by name. If the plan cited an internal coverage guideline, ask for a copy in writing. You are entitled to the evidence used against the request.
Keep a log. Date, time, name, and what was said. Send everything by a method that produces proof. Fax confirmations and certified mail receipts have settled more disputes than arguments have.
If the First Level Says No
Level 2 is automatic. If the plan upholds its own denial, it must forward the case to the Independent Review Entity. That duty appears in 42 CFR 422.590. You do not file anything new.
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The IRE decides within 30 days for standard cases. Expedited cases get 72 hours. If the plan misses its own 30-day deadline, the case should go to the IRE anyway.
After the IRE, you have 60 days to request an ALJ hearing at OMHA. Then 60 days to the Medicare Appeals Council. Then 60 days to federal district court. Each deadline runs from the date on the prior decision.
Free help exists at every level. Your SHIP counselor is free and unbiased. The Center for Medicare Advocacy publishes free self-help packets at medicareadvocacy.org. Medicare’s own booklet is Publication 11525, Medicare Appeals.
Mistakes That Sink a Medicare Advantage Plan Denial Rates Appeal
Waiting for a call back. Nobody at the plan will remind you of the 60-day deadline. File first, then keep negotiating.
Missing the noon cutoff. Families reading a NOMNC often call the QIO the morning care ends. That is too late for the fast-track route.
Appealing without the CMS-1696. An unappointed relative can be blocked mid-process. Sign it early and send it with the first filing.
Sending feelings instead of records. The reviewer needs clinical documentation. A short doctor letter plus chart notes beats a long personal narrative.
Assuming published medicare advantage plan denial rates predict your case. They describe a company’s overall behavior. Your appeal turns on your own record.
Frequently Asked Questions
Where can I look up medicare advantage plan denial rates for my specific plan?
Under a 2024 CMS rule, plans must post prior authorization approval and denial metrics on their own websites each year. Start with your plan’s member site. If you cannot find it, call 1-800-MEDICARE or your SHIP for help locating it.
How many days do I really have to appeal?
Sixty calendar days from receipt of the written denial notice, with receipt presumed 5 days after the notice date. Fast-track appeals for ending care are due by noon the day before coverage stops. Late filings may be accepted for good cause, but do not rely on that.
Who decides my Level 1 appeal?
Your own Medicare Advantage plan decides Level 1. That is why medicare advantage plan denial rates matter to families. Level 2 moves to an independent contractor working for CMS, not for the insurer.
Does a high denial rate mean my appeal will succeed?
No. Denial rates and overturn rates describe past cases across many people. They do not predict any individual outcome. Your result depends on your medical record, your doctor’s documentation, and whether you meet each deadline.
Key Takeaways: Medicare Advantage Plan Denial Rates
- The clock starts with the notice. Every medicare advantage plan denial rates deadline runs from the date on the letter, not the day you read it.
- Appeals are free. Filing a medicare advantage plan denial rates costs nothing, and asking does not affect your other Medicare coverage.
- The doctor’s letter is the evidence. A medicare advantage plan denial rates usually turns on a physician stating why the care is medically necessary.
- Ask for it in writing. Phone calls vanish; a medicare advantage plan denial rates request on paper, sent with tracking, is what survives.
Where to Get Free Help
Three doors cost nothing. Your State Health Insurance Assistance Program (SHIP) counselor will work the medicare advantage plan denial rates with you; find yours through medicare.gov. The Medicare Rights Center helpline answers appeal questions nationally. And 1-800-MEDICARE can tell you exactly which notice you are holding.
Official Sources & Resources
- Medicare appeals overview: https://www.medicare.gov/claims-appeals
- Center for Medicare Advocacy: https://medicareadvocacy.org
- Medicare Rights Center: https://www.medicarerights.org
- Medicare.gov: https://www.medicare.gov
- CMS.gov: https://www.cms.gov
- Find your SHIP counselor: https://www.medicare.gov/talk-to-someone
Checked against the official sources above in September 2026. Rules and dollar figures change; if a notice you received disagrees with this page, the notice wins — and please tell us. General information, not legal, financial or medical advice.