How to Appeal a Medicare Denial: A Step-by-Step Guide

Getting a Medicare denial is frustrating — especially when you’re dealing with a health issue and just need your care covered. But here’s the critical thing to know: you have the right to appeal, and appeals are often successful. About half of all Medicare appeals result in the beneficiary getting the coverage they requested.

Here’s a complete guide to the Medicare appeals process for 2026.

Why Medicare Might Deny a Claim

Medicare denials happen for several reasons:

• The service isn’t covered by Medicare
• Medicare determines the service isn’t “medically necessary”
• The service was provided by a non-participating provider
• Documentation was incomplete or missing
• A billing error occurred
• The service requires prior authorization that wasn’t obtained
• The claim was filed incorrectly

Not all of these are final — many can be overturned on appeal with the right documentation and persistence.

The 5 Levels of the Medicare Appeals Process

Medicare has a structured, five-level appeals process. You must generally exhaust each level before moving to the next.

Level 1: Redetermination by Medicare Administrative Contractor (MAC)

The first step is requesting a redetermination — essentially asking Medicare to take a fresh look at the denial.

• Who handles it: The Medicare Administrative Contractor (MAC) that processed your original claim
• Filing deadline: 120 days from the date of the initial denial (on your Medicare Summary Notice or Explanation of Benefits)
• How to request: Submit a written request to the address on your denial notice, or call 1-800-MEDICARE
• Decision timeframe: Within 60 days
• What to include: Written explanation of why you disagree, supporting medical documentation, any statement from your doctor

Level 2: Reconsideration by Qualified Independent Contractor (QIC)

If you’re not satisfied with the redetermination, you can request reconsideration from an independent contractor — not Medicare itself.

• Filing deadline: 180 days from the Level 1 decision
• Decision timeframe: Within 60 days
• What to include: All previous documentation plus any new evidence

Level 3: Administrative Law Judge (ALJ) Hearing

If the amount in dispute meets the threshold (at least $180 in 2026), you can request a hearing before an Administrative Law Judge (ALJ). This is a significant escalation — you present your case in a hearing setting.

• Filing deadline: 60 days from the Level 2 decision
• Minimum amount: $180 in controversy (adjusted annually)
• Hearing options: In-person, phone, or video conference
• Decision timeframe: 90 days
• Tip: Having a patient advocate or attorney can significantly help at this level

Level 4: Medicare Appeals Council Review

If you disagree with the ALJ decision, you can request review by the Medicare Appeals Council, part of the HHS Departmental Appeals Board.

• Filing deadline: 60 days from the ALJ decision
• Decision timeframe: 90 days (or may take longer)

Level 5: Federal Court Review

The final option is filing a lawsuit in U.S. District Court. This is rarely pursued but is available if the amount in controversy is at least $1,870 (2026) and all other levels have been exhausted.

• Filing deadline: 60 days from the Appeals Council decision
• This level requires an attorney for most people

How to Build a Strong Appeal

Get Your Doctor Involved Early

A letter of medical necessity from your physician is one of the most powerful tools in a Medicare appeal. The letter should clearly explain why the service was medically necessary, your specific diagnosis, and why alternatives weren’t appropriate.

Request Your Medical Records

Make sure your medical documentation supports medical necessity. Sometimes denials happen because the chart notes don’t adequately document why a service was needed.

Understand the Denial Reason

Read your denial notice carefully. The specific reason code and explanation tells you exactly what argument you need to counter. A denial for “not medically necessary” requires different evidence than a denial for “non-covered service.”

File Before the Deadline

Missing an appeal deadline can mean losing your right to appeal entirely. Mark the deadline on your calendar as soon as you receive a denial.

Expedited Appeals for Urgent Situations

If your health condition is serious and you need a faster decision, you can request an expedited appeal:

• For Medicare Advantage plans: You have the right to a decision within 72 hours for urgent care situations
• For hospital discharge denials: If your hospital says it’s discharging you but you believe you still need care, you can appeal to the Beneficiary and Family Centered Care-Quality Improvement Organization (BFCC-QIO) to stay in the hospital. You must request this review before you leave the hospital.

Free Help with Medicare Appeals

You don’t have to navigate this alone:

• State Health Insurance Assistance Program (SHIP): Free, unbiased counseling on Medicare issues including appeals. Find your local SHIP at shiphelp.org.
• Medicare Rights Center: National hotline (800-333-4114) for Medicare issues
• Your state’s Long-Term Care Ombudsman: Helps with SNF-related appeals
• Patient advocacy organizations: Many disease-specific organizations have Medicare specialists

Bottom Line

A Medicare denial is not the final word. The appeals process exists because errors happen, and beneficiaries who appeal thoughtfully and persistently often win. Don’t accept a denial without reviewing it carefully, gathering supporting documentation, and filing your appeal on time.