Insurance Types9 min read

Medicare Advantage Claim Denied: 5-Level CMS Appeal Playbook

Navigate Medicare Advantage (Part C) claim rejections. Understand mandatory CMS coverage rules, Redeterminations, Reconsiderations by Independent Review Entities (IRE), and ALJ hearings.

By ClaimAppeal AI Legal & Clinical Research TeamUpdated 2026-09-12
Key Takeaways & Executive Summary
  • Medicare Advantage plans (Part C) are legally required by CMS to cover everything covered by traditional Original Medicare.
  • Private Medicare Advantage insurers deny prior authorizations and post-acute nursing home stays at rates significantly higher than traditional Medicare.
  • The Medicare appeal framework consists of 5 formal levels: Redetermination (Plan), Reconsideration (Independent Review Entity / IRE), Administrative Law Judge (ALJ), Medicare Appeals Council, and Federal District Court.
  • If the plan upholds a denial, CMS rules require them to automatically forward the file to the independent IRE without patient intervention.

Why Did This Denial Happen & What It Means

Carrier Rejection Rationale

Private insurers offering Medicare Advantage plans maximize profits by restricting access to expensive skilled nursing facilities, inpatient rehab, and specialty drugs.

Common Carrier Tactics:
  • Applying proprietary guidelines more restrictive than Medicare National Coverage Determinations (NCDs)
  • Prematurely terminating rehabilitation therapy

What This Means For You

Your private Medicare Advantage plan refused to pay for care that Medicare beneficiaries are federally entitled to receive.

Financial Responsibility:You may face bills for skilled nursing or home healthcare unless an appeal is filed.
Filing Deadline:60 calendar days from the date of the Notice of Denial.

Evidence Checklist: Documents You Need to Overturn

Appeals backed by objective documentary evidence have a dramatically higher overturn rate. Assemble these items:

CMS Notice of Denial of Medical Coverage (NDMC)Required

Official denial notice.

Source: Medicare Advantage Plan
Medicare National Coverage Determination (NCD) or Local Coverage Determination (LCD)Required

Proof Original Medicare covers the service.

Source: CMS.gov

Step-by-Step Appeal Playbook

01

File Level 1: Redetermination

Submit a written Redetermination request to your Medicare Advantage plan within 60 days of the denial notice.

02

Automatic Forwarding to Level 2 (IRE)

If your plan denies the Redetermination in whole or in part, federal law requires them to automatically forward your file to Maximus Federal Services (the IRE).

03

Level 3: Request an Administrative Law Judge (ALJ) Hearing

If the IRE upholds the denial and the claim meets the statutory amount in controversy ($180+), request an independent video or phone hearing with a federal judge.

Statutory Authority & Legal Citations

Insurers are bound by federal administrative regulations. Citing these specific statutory rules in your appeal prevents arbitrary denials:

42 C.F.R. § 422.101 (CMS Final Rule 2024)Medicare Advantage coverage equivalency.

Medicare Advantage plans cannot be more restrictive than Traditional Medicare National Coverage Determinations (NCDs).

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Frequently Asked Questions

Can a Medicare Advantage plan deny care covered by traditional Medicare?

Under 2024 CMS rules, Medicare Advantage plans cannot apply internal coverage criteria more restrictive than Traditional Medicare guidelines.

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Legal Notice & Disclaimer:

ClaimAppeal AI provides self-help software and educational materials. The information presented does not constitute legal or medical advice. Health plans vary; always review your plan's Summary Plan Description (SPD) and official adverse benefit determination notices for exact procedural requirements.