Guide

Medicare's five appeal levels, from redetermination to federal court

Summary

Traditional Medicare's appeal path runs through five levels in a fixed order: redetermination by your own Medicare Administrative Contractor, reconsideration by an independent Qualified Independent Contractor, a hearing before an Administrative Law Judge, review by the Medicare Appeals Council, and, last, judicial review in federal district court. Each level has its own filing deadline and its own rules for who may request it, set out in CMS's own public program manuals.

By Gale Editorial · Updated 2026-07-26. Every figure cited to a dated source. How we write.

What are the five levels of a Medicare appeal?

Traditional Medicare's appeal path has five levels, always in the same order: redetermination, handled by your own Medicare Administrative Contractor; reconsideration, handled by an independent Qualified Independent Contractor; a hearing before an Administrative Law Judge; review by the Medicare Appeals Council; and judicial review in federal district court, the only level where representation is effectively necessary. Each level's procedure is set out in CMS's own public program manuals 1.

A claim moves to the next level only if it is denied again at the current one, and only if it was requested within that level's own deadline — so understanding the sequence matters less than tracking which deadline is actually running on a specific denied claim right now.

Level 1: redetermination by your own MAC

Redetermination is the first and by far the most common level, and it is handled entirely by the same Medicare Administrative Contractor that processed the original claim — not by CMS directly and not by an outside reviewer. Medicare claims administration is regionalized across MACs, each serving its own jurisdiction, so the MAC that reviews the redetermination is whichever one already has the claim on file 2.

CGS Medicare, one named example among several regional MACs, publishes its own redetermination request process and forms on its own site, which is where a request for that jurisdiction is actually filed rather than through a general CMS portal 3. Reading your own MAC's published redetermination instructions, not another jurisdiction's, is the first move on any denial worth appealing.

Level 2: reconsideration by an independent contractor

If redetermination upholds the original denial, the next stop is reconsideration, conducted by a Qualified Independent Contractor entirely separate from the MAC that made the first decision — a genuine second, independent look rather than the same reviewer revisiting their own call. This is the level where new supporting documentation, not previously submitted, most often changes the outcome.

The request has to be filed within that level's own deadline, which is shorter than most solos expect and is worth confirming directly against CMS's current published rule rather than assumed from memory, since these levels' filing windows are defined by federal regulation and can be adjusted.

Level 3: a hearing before an Administrative Law Judge

The third level moves the appeal out of the contractor system entirely and into a hearing before an Administrative Law Judge, typically conducted by phone or video rather than in person, where the biller or the patient can actually present the case and respond to questions rather than submit paperwork into a review queue. This level generally requires the disputed amount to clear a minimum dollar threshold set by CMS.

Because that threshold is indexed and changes, the specific current figure is worth confirming in CMS's own program manual before assuming a claim qualifies, rather than discovering the amount falls short after the hearing request has already been filed 1.

Levels 4 and 5: the Medicare Appeals Council and federal court

If the ALJ hearing does not resolve the dispute, the fourth level is review by the Medicare Appeals Council, part of HHS's Departmental Appeals Board, which reviews the ALJ's decision on the existing record rather than rehearing the case from scratch. The fifth and final level, judicial review in federal district court, is the only stage where the case leaves the administrative system entirely.

Very few appeals reach either of these last two levels — most solos who appeal at all resolve the dispute at redetermination or reconsideration — but both levels exist as a real backstop for a claim genuinely worth the time, and both carry their own filing deadlines set out in the same public program manuals as every earlier level 1.

Reading the denial before you appeal

Every level of appeal starts from the same document: the remittance or Medicare Summary Notice explaining why the claim was denied in the first place. The Claim Adjustment Reason Code names the category of the denial, and the Remittance Advice Remark Code supplies the specific detail a bare CARC does not give, and both are standard, X12-maintained lists rather than something specific to Medicare 45.

Reading both codes before drafting a redetermination request means the request answers the actual reason the claim was denied, rather than a generic argument that does not engage with what the MAC's system actually flagged — a mismatch that is one of the more common reasons a first-level appeal fails on a claim that should have succeeded.

Tracking five deadlines without losing one

A single denied claim can carry five different filing deadlines depending on how far it eventually goes, and the practical risk for a solo is not any one level's rule — it's losing track of which deadline is running once a claim has already moved past redetermination. A simple log with the claim, the current level, the date the current level's denial arrived, and the deadline to request the next level catches this before a deadline passes unnoticed.

Because the deadlines themselves are set by federal regulation and can be adjusted, the log's job is tracking dates against whatever CMS's current manual says at that level, not memorizing a number that might change between one appeal and the next — the manual, not memory, is the source of record for a claim actually in progress 1.

How Medicare's path differs from a commercial appeal

Traditional Medicare's five levels apply the same way regardless of how the patient's coverage is otherwise structured, because Medicare Part A and B are federal programs governed by federal regulation, not by a private plan document. That is a genuine difference from commercial appeals, where the applicable process can depend on whether the plan is state-regulated or self-funded under ERISA.

Self-funded employer plans are governed by ERISA rather than state insurance law, with their own separate claims-and-appeals framework and deadlines entirely apart from Medicare's five levels 6. A solo who bills both Medicare and commercial patients is effectively running two different appeal systems, and confirming which one applies before filing is worth the extra minute — Medicare's levels never depend on plan type, commercial appeals almost always do.

Common questions

Redetermination by the Medicare Administrative Contractor that processed the claim, reconsideration by an independent Qualified Independent Contractor, a hearing before an Administrative Law Judge, review by the Medicare Appeals Council, and judicial review in federal district court. A claim advances to the next level only when it is denied again and only if the request is filed within that level's own deadline.

Whichever MAC already has your claim on file, since Medicare claims administration is regionalized by jurisdiction and each MAC serves its own set of states. CGS Medicare is one example of a regional MAC that publishes its own redetermination process and forms directly on its site — checking your own jurisdiction's MAC, not a different region's, is where the actual request gets filed.

Not at the earlier levels. Redetermination and reconsideration are largely paperwork-based and commonly handled by the billing side of a solo practice. An Administrative Law Judge hearing can still be handled without counsel, though it involves presenting a case directly. Judicial review in federal district court is the level where representation is effectively necessary, since it is a genuine federal court proceeding.

Each level carries its own deadline set by federal regulation, and missing it generally forfeits that level rather than pausing it. Because these deadlines are defined in CMS's own program manuals and can be adjusted, the reliable move is confirming the current window directly rather than relying on a remembered number, and calendaring the deadline the moment a denial at any level arrives.

Medicare's five levels apply uniformly because Medicare is a federal program, not a private plan document. Commercial appeals vary by plan: a state-regulated fully-insured plan follows that state's process, while a self-funded employer plan follows ERISA's separate claims-and-appeals framework instead. A solo billing both program types is effectively working two different appeal systems side by side.

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References

  1. 1.Centers for Medicare & Medicaid Services (2026). Internet-Only Manuals (IOMs). Centers for Medicare & Medicaid Services (CMS). link ✓That CMS program instructions, including the Medicare Claims Processing Manual (Pub. 100-04), which houses the appeals-of-claims-decisions procedures and current filing deadlines and thresholds, live in the public Internet-Only Manuals.
  2. 2.Centers for Medicare & Medicaid Services (2026). Medicare Administrative Contractors. Centers for Medicare & Medicaid Services (CMS). link ✓That Medicare claims administration is regionalized across MACs and that CMS publishes which MAC serves each jurisdiction, used here to identify who actually handles a level-1 redetermination.
  3. 3.CGS Medicare (2026). CGS Medicare. Medicare Administrative Contractor portal. link ✓That this Medicare Administrative Contractor publishes its own jurisdiction-specific redetermination process and forms, cited as one named example of where a level-1 appeal is actually filed.
  4. 4.X12 (2026). Claim Adjustment Reason Codes. X12. link ✓That CARCs are the standard code list explaining why a claim or service line was paid differently than billed, used here to read a Medicare denial before appealing it.
  5. 5.X12 (2026). Remittance Advice Remark Codes. X12. link ✓That RARCs supply the supplemental detail beyond the CARC on a remittance, maintained by X12 as a public list, used here to build a redetermination request around the actual denial reason.
  6. 6.U.S. Department of Labor (2026). ERISA. U.S. Department of Labor. linkThat self-funded employer plans are governed by ERISA rather than state insurance law, with their own claims-and-appeals framework and deadlines, contrasted here with Medicare's uniform federal five-level path.

https://www.gale.care/for-providers/dn-medicare-appeals-5-levels · 6 sources. Competitor details are cited to dated public sources and maintained as they change; figures are estimates, not commitments. Synthetic demonstration.

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