Guides
How to File a Medicare Appeal When a Claim Is Denied
Medicare denied your claim? You have the right to appeal. This step-by-step guide covers all 5 levels of the Medicare appeals process and how to win your case.
Quick Summary
If Medicare denies a claim, don't pay and don't give up. About 50% of appealed denials are overturned — and the process is free. You have five levels of appeal, starting with a simple redetermination request.
Receiving a medicare appeal claim denied notice can be frustrating and frightening — especially when you need medical services. But here's the critical thing to know: you have the legal right to appeal every Medicare denial, and the success rate for appeals is much higher than most people realize. In 2026, here's your complete guide to the five-level process.
Act Quickly — Deadlines Are Strict
You have only 120 days from the date on your denial notice (Medicare Summary Notice or Explanation of Benefits) to file a first-level appeal. Missing this deadline can end your right to appeal.
The 5 Levels of Medicare Appeals
Each level escalates to a higher authority. Most claims are resolved at Level 1 or 2.
Level 1: Redetermination
Handled by the same Medicare contractor that denied the claim. Submit your appeal with a letter from your doctor explaining medical necessity. Decision typically within 60 days.
Level 2: Reconsideration
Reviewed by an independent Qualified Independent Contractor (QIC) — not the original insurer. Submit within 180 days of Level 1 decision. Decision within 60 days.
Level 3: Administrative Law Judge (ALJ) Hearing
A formal hearing before an impartial federal ALJ. The amount in dispute must meet a minimum threshold (~$190 in 2026). You can appear in person or by phone/video.
Level 4: Medicare Appeals Council Review
A federal review board evaluates whether the ALJ followed the law correctly. Submit within 60 days of ALJ decision.
Level 5: Federal District Court
The final level — you file a lawsuit in federal court. Requires the disputed amount to meet a higher threshold (~$1,900 in 2026). Usually requires legal representation.
| Level | Reviewer | Deadline to File | Decision Timeline |
|---|---|---|---|
| 1 — Redetermination | Medicare Contractor / Plan | 120 days from denial | 60 days |
| 2 — Reconsideration | Independent QIC | 180 days from Level 1 | 60 days |
| 3 — ALJ Hearing | Administrative Law Judge | 60 days from Level 2 | 90 days |
| 4 — Appeals Council | Medicare Appeals Council | 60 days from Level 3 | Varies |
| 5 — Federal Court | U.S. District Court | 60 days from Level 4 | Varies |
Expedited Appeals Available
If your health is at immediate serious risk, you can request a 'Fast Appeal.' For Medicare Advantage denials, expedited appeals must be decided within 72 hours. For hospital discharge denials, you can receive a same-day decision.
Common Reasons for Medicare Denial
- The service was deemed 'not medically necessary' by the reviewer
- Your provider used an incorrect billing code (very common and fixable)
- The service is not a covered Medicare benefit
- Prior authorization was required but not obtained before the service
- The service was received from a non-covered (out-of-network) provider
- Documentation was incomplete or not submitted timely
How to Build a Winning Appeal
Your appeal is strongest when you include supporting medical evidence:
Get a letter of medical necessity from your doctor
This is the single most important piece of evidence. Your doctor should explain why the treatment was medically necessary and relate it to your diagnosis.
Review your denial notice carefully
Find the specific 'reason code' or denial reason. Your appeal should directly address and counter each reason given.
Gather all supporting records
Collect relevant medical records, test results, and clinical guidelines that support the necessity of the denied service.
Submit by certified mail with return receipt
Keep proof of submission. Use the address on your denial notice and keep a copy of everything you send.
Free Help Available
Your state's SHIP (State Health Insurance Assistance Program) offers free, unbiased help preparing Medicare appeals. Call 1-800-MEDICARE to find your local SHIP counselor — no appointment fee, no obligation.
What a Winning Appeal Package Includes
The most common reason Level 1 appeals fail is insufficient medical justification. A strong appeal package includes: (1) a physician letter of medical necessity that directly addresses the specific denial reason, (2) relevant medical records and diagnostic test results, (3) peer-reviewed clinical guidelines or CMS Coverage Determinations supporting the service, and (4) your own written statement of facts. Organized, thorough documentation dramatically improves overturn rates.
Ask Your Doctor for a Targeted Appeal Letter
A generic physician note is not enough. Ask your doctor to write a letter specifically addressing: your diagnosis, why the denied service is medically necessary for your specific condition, and what adverse health outcome would result from denial. A letter that directly refutes the denial reason is far more effective than a general letter of support.
Expedited Appeals: When You Need a Fast Decision
| Situation | Appeal Type | Decision Timeline | How to Request |
|---|---|---|---|
| Imminent health risk (Part B service) | Expedited Redetermination | 72 hours | Check 'expedited' box on appeal form |
| Hospital discharge seems too soon | BFCC-QIO Immediate Review | Same day or next day | Call BFCC-QIO before leaving the hospital |
| MA plan denies urgent care | Expedited MA Appeal | 72 hours | Call plan member services and state 'expedited' |
| Skilled nursing facility discharge | QIO Review | Within 1 day | Request review from Livanta or Kepro QIO |
Do NOT Pay the Bill While Appealing
Paying a disputed bill can be interpreted as accepting the denial. While your appeal is pending, hold off on payment. Send the provider a brief written notice that you are appealing the Medicare claim and that payment is contingent on the outcome.
Key Takeaways
- ✓You have the legal right to appeal every Medicare claim denial
- ✓About 50% of appealed claims are overturned — don't give up after the first denial
- ✓You have 120 days from your denial notice to file a Level 1 appeal
- ✓A doctor's letter of medical necessity is the most important piece of evidence
- ✓All five levels of appeal are free to file
- ✓Free help is available through your state's SHIP counselors
Frequently Asked Questions
Disclaimer: SeniorPop is not affiliated with Medicare, Medicaid, or any government agency. Benefit availability varies by plan and location. Contact a licensed Medicare advisor for plan-specific information.