A denial on a Medicare Summary Notice is an initial payment decision, not necessarily the last word on a medical bill. A person with Original Medicare generally has 120 days from receiving that determination to request the first appeal, called a redetermination. The exact deadline printed on the notice controls, and a late filing may still be considered when good cause is shown.
The first appeal goes back to a Medicare contractor
Original Medicare claims are processed by Medicare Administrative Contractors. A different contractor employee reviews the challenged claim at the redetermination stage, rather than the same person simply repeating the first decision.
The current CMS first-level appeal page states that an appellant has 120 days from receipt of the initial claim determination to request redetermination. CMS generally presumes the notice was received five calendar days after its date unless evidence shows otherwise.
Free retirement updates: One number can cost or save hundreds a month in retirement. The free Retirement Shield newsletter surfaces the ones worth knowing. Sign up free.
The Summary Notice supplies the filing address and date
The Medicare Summary Notice lists the billed items and services, what Medicare paid and what the beneficiary may owe. It also marks whether each claim was approved, partly denied or fully denied. The last page contains the claims-office address and appeal instructions.
Medicare’s beneficiary appeal instructions offer three routes: use the redetermination form, annotate and return a copy of the Summary Notice, or send a written request containing the required information. Every route needs the specific services and dates, an explanation of disagreement and identifying information.
Supporting evidence can come from a physician, supplier or medical record. A denied claim may reflect missing coding or documentation rather than a final conclusion that the service can never be covered. Asking the provider for an itemized statement and relevant notes before filing can make the request more focused.
A missed deadline does not automatically erase the appeal
The notice date should be treated as the working deadline, but Medicare permits a late appeal when the appellant establishes good cause. Examples in current guidance include serious illness, disability, accident or circumstances that prevented a timely filing.
A late request should include a written explanation and any evidence supporting the reason. Good cause is not an automatic extension available to every late filer; the contractor evaluates the circumstances. Sending the request within the printed period remains the strongest route.
The CMS-20027 redetermination form includes space for a reason when the initial determination was received more than 120 days earlier. That form language confirms the late-filing route while keeping the ordinary 120-day period intact.
The contractor generally has 60 days to answer
After receiving a complete redetermination request, the contractor generally issues a decision within 60 days. If the appeal succeeds, the covered item or service should appear on a later Summary Notice. If it fails, the contractor sends a Medicare Redetermination Notice explaining the result.
Further review has different clocks. A person who disagrees with redetermination generally has 180 days to request reconsideration by a Qualified Independent Contractor. Later appeal levels may involve an administrative law judge, the Medicare Appeals Council and federal court, with minimum disputed amounts applying at some levels.
The 120-day rule therefore opens a process rather than promising payment. A denial can still be challenged, the notice shows when and where to file, and a documented good-cause request may preserve review after the ordinary deadline. CMS’s current first-level rule is the controlling source for that right.
An appeal should focus on the reason shown in the Medicare Summary Notice. A coding problem, missing documentation and a finding that a service was not medically necessary call for different evidence. Sending a large medical file without connecting it to the denial reason can obscure the strongest point.
A beneficiary can ask the doctor or supplier for an itemized bill and records supporting the service. A short statement identifying the diagnosis, treatment purpose and why the service met Medicare’s coverage requirements may be more useful than a general endorsement.
Copies matter because the appeal package becomes the record for the next reviewer. The beneficiary should retain the signed request, attachments and proof of mailing or submission. If the deadline was missed, the request can explain the good cause and include documents supporting the delay, but an extension is not automatic.
Where the help is written down
The programs that lower Medicare costs each run on a different form and a different office, and no single notice lists them together.
The Medicare Cost & Coverage Protection Kit includes a 10-page kit, 51 state Medicare cost-help packs and the new Part D out-of-pocket cap.
See the state cost-help packs in The Medicare Cost & Coverage Protection Kit.
This article was produced with AI assistance and reviewed by a human editor. Figures are linked to their primary sources; where a claim could not be verified from the public record, we say so.
