Medicare Summary Notice envelopes are the ones families throw away. They look like junk mail. They are not. If your mother had surgery in June and a line on that statement says Medicare did not approve a charge, a clock started running — and almost nobody notices it in time. The notice is not a bill. It is the official record of what Medicare decided about each claim, and it is the document that carries your appeal rights.
- What “medicare summary notice” Actually Means
- The Deadline You Cannot Miss
- How to Start a Medicare Summary Notice Appeal
- What to Put in the File
- If the First Level Says No
- Mistakes That Sink a Medicare Summary Notice Appeal
- Frequently Asked Questions
- Key Takeaways: Medicare Summary Notice
- Where to Get Free Help
- Official Sources & Resources
- Related Guides
This guide walks through how to read the statement line by line, how to spot a denial buried in the notes column, and exactly what to do in the days after you find one. Every deadline below comes from Medicare’s own published rules.
What “medicare summary notice” Actually Means
The Medicare Summary Notice (MSN) is the claims statement for people in Original Medicare, Part A and Part B. Medicare mails it at least twice a year, and only for periods when you actually had claims processed. You can read more on the official Medicare Summary Notice page at Medicare.gov.
You can also switch to the electronic version, the eMSN. Log in at Medicare.gov and choose electronic notices. Medicare then emails you a link for any month a claim is processed. That is a far faster way to catch a problem, because you are not waiting months for paper.
If your parent is in a Medicare Advantage plan, they do not get an MSN. The plan sends its own Explanation of Benefits and denial letters, and the deadlines differ. Confirm which coverage you have before you start.
The critical section sits in the claims detail table. Each service line shows the date, the provider, the amount charged, and a column headed “Medicare paid” or similar. Look for lines marked that Medicare did not approve the service. Then read the numbered note at the bottom of the page. That note is the denial reason.
The Deadline You Cannot Miss
You have 120 days to file a first-level appeal, called a redetermination. The clock runs from the date you received the notice, not the date of service. Medicare presumes you received it 5 days after the date printed on it, unless you can show otherwise.
That single fact is why the Medicare Summary Notice matters so much. Miss 120 days and you must show “good cause” for filing late. Good cause is granted at the contractor’s discretion. It is not something to count on.
Here are the levels, the decider at each one, and the filing deadline. The dollar thresholds for 2026 come from the Federal Register notice adjusting the amount-in-controversy thresholds for calendar year 2026.
| Level | Notice or form | Who decides | Your deadline to file |
|---|---|---|---|
| 1 — Redetermination | Form CMS-20027, or the signed appeal section of the MSN | Your Medicare Administrative Contractor (MAC) | 120 days from receipt of the MSN; MAC answers in about 60 days |
| 2 — Reconsideration | Form CMS-20033 | A Qualified Independent Contractor (QIC) | 180 days from the Medicare Redetermination Notice; QIC answers in about 60 days |
| 3 — ALJ hearing | Form OMHA-100 | Administrative Law Judge, Office of Medicare Hearings and Appeals | 60 days from the reconsideration decision; at least $200 must be in dispute in 2026 |
| 4 — Council review | Form DAB-101 | Medicare Appeals Council, Departmental Appeals Board | 60 days from the ALJ decision |
| 5 — Federal court | Civil complaint | U.S. District Court | 60 days from the Council decision; at least $1,960 in dispute in 2026 |
Hospital and nursing home situations run on a separate, much faster track. Those are described further below.
How to Start a Medicare Summary Notice Appeal
Step one is the simplest and the most overlooked. Turn to the appeals section of the notice itself. Circle every service line you disagree with. Write a short sentence explaining why you think Medicare should cover it.
Sign the notice and print your phone number. Mail it to the MAC address printed in that shaded appeals box. Keep a photocopy of everything you send. That copy is your proof of what was filed and when.
The alternative is the Medicare Redetermination Request, Form CMS-20027. Download it from the Medicare appeals forms page. It asks for the beneficiary name, Medicare number, the specific service, the date, and the reason for the appeal. Mail it to the same MAC address.
Send it by a method that proves delivery. Certified mail with return receipt is standard. So is fax with a confirmation page. Do not rely on a plain first-class envelope for a filing this important.
The rules governing this step are published by CMS at First Level of Appeal: Redetermination by a Medicare Contractor. If anything on your Medicare Summary Notice is unclear, call 1-800-MEDICARE (1-800-633-4227, TTY 1-877-486-2048). The call is free and available 24 hours a day.
What to Put in the File
Include a copy of the notice with the disputed lines circled. Add the itemized bill from the provider. Add any Advance Beneficiary Notice of Noncoverage, Form CMS-R-131, that a provider asked your family member to sign.
The single item that moves cases most often is a letter from the treating physician. Ask the doctor to state the diagnosis, why the service was medically necessary, and what would have happened without it. Ask for specifics, not adjectives. A letter that cites the clinical record carries more weight than one that expresses general support.
Also request the medical records for the dates in question. Providers must generally supply them, sometimes for a copying fee. Number your pages and write a one-page cover letter listing what is enclosed.
If the First Level Says No
You will receive a Medicare Redetermination Notice explaining the decision. From that date you have 180 days to request a reconsideration using Form CMS-20033. A Qualified Independent Contractor, an entity separate from the MAC, reviews the file fresh.
Free help exists at every level. Your State Health Insurance Assistance Program provides trained, unbiased counselors at no charge. Reach the national office at 1-877-839-2675, or find your local office through SHIP’s official site. Counselors can review your notice with you and help assemble the packet.
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The Center for Medicare Advocacy publishes free self-help appeal packets at medicareadvocacy.org, and the Medicare Rights Center runs a national helpline with plain-language guidance at Medicare Interactive.
Hospital discharge disputes go to a different body entirely. Every state is assigned to a Beneficiary and Family Centered Care Quality Improvement Organization, either Acentra Health or Commence Health, formerly Livanta. Its toll-free number is printed on the Important Message from Medicare (Form CMS-10065) you receive during an inpatient stay.
To use the fast-track hospital appeal, call the QIO no later than midnight of your planned discharge day. For skilled nursing, home health, or hospice coverage ending, you get a Notice of Medicare Non-Coverage (Form CMS-10123), and you must call the QIO by noon of the day before coverage stops. Confirm both timelines against the notice in your hand.
Mistakes That Sink a Medicare Summary Notice Appeal
The first mistake is waiting for a bill. Families often set the notice aside until a collection letter arrives months later. By then the 120 days may be gone.
The second is appealing the wrong thing. The reason code at the bottom of the page tells you whether the denial was for medical necessity, a coding problem, or a missing referral. A coding error is often fixed by asking the provider to resubmit, not by filing an appeal.
The third is sending a letter with no records attached. Reviewers decide on the documentation in front of them. An unsupported assertion usually loses.
The fourth is missing a signature. An unsigned request can be returned, and the return does not stop the clock.
The fifth is confusing coverage types. Medicare Advantage denials do not use a Medicare Summary Notice and follow the plan’s own 60-day appeal window. Check the card before you file.
Frequently Asked Questions
Is the Medicare Summary Notice a bill I have to pay?
No. It is a statement of what Medicare decided about each claim. Providers bill you separately, and the amounts may not match line for line.
I lost the notice. Can I still appeal?
Yes. Log in to your account at Medicare.gov to view processed claims, or call 1-800-MEDICARE to request a replacement. You can also file a written redetermination request using Form CMS-20027 without the original notice.
Does filing an appeal cost anything?
There is no filing fee at the first four levels. You may pay for medical record copies or for an attorney, though many families handle early levels with free SHIP help.
How long will the whole process take?
The first two levels each target roughly 60 days. Administrative Law Judge hearings have a 90-day target but have run substantially longer in recent years. Ask your MAC or SHIP counselor for current wait estimates before you plan around a date.
Key Takeaways: Medicare Summary Notice
- The clock starts with the notice. Every medicare summary notice deadline runs from the date on the letter, not the day you read it.
- Appeals are free. Filing a medicare summary notice costs nothing, and asking does not affect your other Medicare coverage.
- The doctor’s letter is the evidence. A medicare summary notice usually turns on a physician stating why the care is medically necessary.
- Ask for it in writing. Phone calls vanish; a medicare summary notice request on paper, sent with tracking, is what survives.
- Level one is not the end. A medicare summary notice has five levels, and the later ones overturn denials far more often than people expect.
- Someone can act for you. Form CMS-1696 lets a family member handle a medicare summary notice on the patient’s behalf.
Where to Get Free Help
Three doors cost nothing. Your State Health Insurance Assistance Program (SHIP) counselor will work the medicare summary notice with you; find yours through medicare.gov. The Medicare Rights Center helpline answers appeal questions nationally. And 1-800-MEDICARE can tell you exactly which notice you are holding.
Official Sources & Resources
- Medicare appeals overview: https://www.medicare.gov/claims-appeals
- Center for Medicare Advocacy: https://medicareadvocacy.org
- Medicare Rights Center: https://www.medicarerights.org
- Medicare.gov: https://www.medicare.gov
- CMS.gov: https://www.cms.gov
- Find your SHIP counselor: https://www.medicare.gov/talk-to-someone
Checked against the official sources above in September 2026. Rules and dollar figures change; if a notice you received disagrees with this page, the notice wins — and please tell us. General information, not legal, financial or medical advice.