How to Appeal a Medicare Denial: The 5-Level Process Explained
How to Appeal a Medicare Denial: The 5-Level Process Explained
Medicare denials aren't final — but they become final fast if you miss the deadlines. The Medicare appeals system has five levels, each with its own adjudicating body, timeline, and filing requirements. Most denials that get appealed are overturned: studies consistently show that a substantial percentage of Level 1 appeals result in fully or partially favorable decisions, and success rates climb further at Level 2.
The problem isn't the odds. It's that most caregivers don't know the process exists, don't file in time, or don't include the right documentation.
Level 1: Redetermination
This is where nearly all appeals start — and where most are resolved.
Original Medicare: File within 120 days of receiving the Medicare Summary Notice (MSN). Circle the denied claim on the MSN, write a brief explanation of why coverage should apply, and mail it to the Medicare Administrative Contractor (MAC) address printed on the notice. The MAC must respond within 60 days.
Medicare Advantage (Part C): File within 65 days of the plan's denial notice. Submit to the plan sponsor. Standard decisions take 30 days for pre-service requests and 60 days for payment disputes. Expedited requests (when delay could jeopardize health) must be decided in 72 hours.
Part D (prescriptions): File within 65 days. The plan must respond in 7 days for coverage decisions and 14 days for payment disputes.
What to include: a copy of the denial letter, the MSN or EOB, supporting medical records, and a letter from the treating physician explaining medical necessity. The physician's letter is often the difference between a reversal and an upheld denial.
Level 2: Reconsideration
If Level 1 fails, the appeal moves to an independent review body — not the same entity that denied it.
Original Medicare: File within 180 days of the MAC's redetermination with the Qualified Independent Contractor (QIC). Decision within 60 days.
Medicare Advantage/Part D: File within 60 days of the Level 1 decision. The Independent Review Entity (currently Maximus Federal Services) reviews the case. For Part C, plan denials are automatically forwarded to the IRE.
Level 2 is the first point where an independent third party reviews the case. This is critical — you're no longer asking the entity that denied the claim to reconsider its own decision.
Level 3: Administrative Law Judge Hearing
If Level 2 upholds the denial, you can request a hearing before an Administrative Law Judge (ALJ) at the Office of Medicare Hearings and Appeals (OMHA).
Filing deadline: 60 days from the Level 2 decision.
Financial threshold: The amount in controversy must be at least $200 (2026 threshold). You can combine multiple denied claims to meet this minimum.
How to file: Complete Form OMHA-100 through the OMHA e-Appeal Portal or submit by mail. The ALJ must issue a decision within 90 days, though extensions are common if additional evidence is submitted or an in-person hearing is requested.
ALJ hearings can be conducted by phone, video, or in person. This is the first level where you can present testimony, call witnesses, and cross-examine evidence. Many caregivers find that having the physician participate by phone significantly strengthens the case.
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Level 4: Medicare Appeals Council
File within 60 days of the ALJ decision. The Appeals Council (part of the Department of Health and Human Services) reviews the ALJ's decision for legal errors. Response time is 90 days. No financial threshold applies.
Level 5: Federal District Court
The final level. File within 60 days of the Appeals Council decision. The amount in controversy must exceed $1,960 (2026 threshold). This requires filing a formal civil action and typically involves legal representation.
Quick Reference: Deadlines at a Glance
| Level | File Within | Decision Due | 2026 Financial Threshold |
|---|---|---|---|
| 1 — Redetermination | 120 days (Original) / 65 days (MA/Part D) | 60 days (Original) / varies by type | None |
| 2 — Reconsideration | 180 days (Original) / 60 days (MA/Part D) | 60 days | None |
| 3 — ALJ Hearing | 60 days | 90 days | $200 |
| 4 — Appeals Council | 60 days | 90 days | None |
| 5 — Federal Court | 60 days | Varies | $1,960 |
Appointing a Representative for Appeals
To file appeals on your parent's behalf, you need Form CMS-1696 — the Appointment of Representative. A state Power of Attorney isn't sufficient for formal Medicare proceedings. Both the beneficiary and the representative must sign the form, and it's submitted alongside the appeal filing.
Expedited Appeals During a Hospital Stay
If your parent is being reclassified from inpatient to observation status while still in the hospital, don't wait for the standard timeline. File an expedited appeal with the state's Beneficiary and Family Centered Care Quality Improvement Organization (BFCC-QIO). The QIO must issue a determination within one day of receiving the hospital's medical records.
This matters because observation status means the hospital stay doesn't count toward the three-day inpatient requirement for skilled nursing facility coverage under Original Medicare.
Don't Let Deadlines Pass
The Caregiver's Guide to Managing a Parent's Medicare includes appeal letter templates, a deadline tracker, and the complete Form CMS-1696 walkthrough — everything you need to file at every level of the process.
Get Your Free A Caregiver's Guide to Managing a Parent's Medicare — Quick-Start Checklist
Download the A Caregiver's Guide to Managing a Parent's Medicare — Quick-Start Checklist — a printable guide with checklists, scripts, and action plans you can start using today.