Quick answer: If Medicare or your plan refuses to cover or pay for a service, item or drug you think should be covered, or if you disagree with the amount you must pay, you can appeal. The process depends on whether you have Original Medicare, a Medicare Advantage Plan, or a Part D drug plan. Official Medicare.gov pages describe five levels of appeal in general, with different first steps: Original Medicare usually starts from your Medicare Summary Notice with a redetermination by a Medicare Administrative Contractor; Advantage and Part D appeals usually start with the plan and can include expedited (fast) reviews for urgent needs. Deadlines are short and are printed on the notice. Follow the official instructions rather than a generic script. This guide sits in our Medicare guide and is about Medicare appeals, not a private employer or Marketplace claim, which is a different process.
Sources: Medicare.gov “Filing an appeal,” “Appeals in Original Medicare,” and plan appeal pages; CMS “Original Medicare (Fee-for-service) Appeals” (five levels: MAC redetermination, QIC reconsideration, Office of Medicare Hearings and Appeals, Medicare Appeals Council, federal district court). Official deadline examples include filing a redetermination by the date on the MSN (Medicare.gov discusses good-cause exceptions) and 180 days to request a QIC reconsideration after the MAC decision. Later levels and amount-in-controversy thresholds change; use the notice. Advantage and Part D follow plan procedures in official Evidence of Coverage and denial letters, including expedited reviews. Checked November 2026. This is general consumer information, not legal, tax, medical or benefits advice. Medicare rules, plan designs and dollar amounts change. Confirm current details on Medicare.gov, with CMS, Social Security, your plan, and a State Health Insurance Assistance Program (SHIP) counselor before you rely on a figure or a deadline.
Start With the Notice, Then Use the Process That Matches Your Coverage
An appeal is a formal review of a coverage or payment decision. Medicare.gov says you can generally appeal if Medicare or your plan will not cover a service, supply, item or drug you think should be covered, will not pay for something you already received, or has assigned a payment amount you think is wrong. A complaint about customer service is usually a grievance, which is a different official path. A coverage determination or organization determination is the decision you are appealing.
Read the denial or the Medicare Summary Notice before you do anything else. The notice should tell you why the claim was denied, how to appeal, the deadline, and where to send the request. Official instructions beat a template you found online, because addresses and form names are specific to the contractor or plan.
Original Medicare, Medicare Advantage and Part D share a broad five-level idea, but the first filing is different. Mixing them up — for example, mailing an Advantage denial to a Medicare Administrative Contractor — can waste the deadline.
For Original Medicare, Medicare.gov explains that Level 1 is a redetermination by the Medicare Administrative Contractor (MAC) that processed the claim. You generally start from the Medicare Summary Notice. Official options include completing a Redetermination Request Form or following the MSN instructions: circling the item, explaining why you disagree, including your name and Medicare Number, and mailing the request to the address on the MSN. Medicare.gov says you must file by the date on the MSN, and that if you miss the deadline you may still get a decision if you can show good cause (official examples include a disability, illness or accident that delayed you). The MAC generally has 60 days after it gets the appeal to decide, according to Medicare.gov. If the MAC still denies the item, you get a Medicare Redetermination Notice.
Level 2 in Original Medicare is a reconsideration by a Qualified Independent Contractor (QIC) that did not take part in the first decision. Medicare.gov says you have 180 days after you get the MAC decision letter or an MSN to request that review. Later official levels, as CMS describes them, are a review by the Office of Medicare Hearings and Appeals, a review by the Medicare Appeals Council, and, if official amount-in-controversy thresholds are met, judicial review in federal district court. Those thresholds and filing times are listed on the decision letter and can change with inflation updates, so this article does not invent a current dollar cutoff.
Ask your provider or supplier for records that support medical necessity, and keep copies of everything you send. You can appoint a representative using the official Appointment of Representative form or another writing that meets official requirements.
Medicare Advantage, Part D and Faster Reviews
If you have a Medicare Advantage Plan or another Medicare health plan, the first appeal usually goes to the plan. Medicare.gov says the plan must tell you in writing how to appeal, and you can generally find contact information on your membership card. Follow the organization determination and appeal chapter in your Evidence of Coverage. Plans have standard and expedited (fast) appeal time frames when waiting the standard time could seriously jeopardize your life, health or ability to regain maximum function, as official materials describe. Ask for a fast review if the situation meets official criteria, and have your clinician help when the plan requires it.
Part D drug plans use coverage determinations, exceptions and appeals. If a drug is not on the formulary, is on a higher tier, or needs prior authorization, official Part D rules allow you to request an exception or a coverage determination. Time frames can be short, and there is an official path for expedited requests. After the plan’s decision, independent review and later levels can follow, as the denial letter explains. Keep the prescription, the prescriber’s statement, and the plan’s written decision.
Hospital and skilled nursing discharge appeals have additional official protections, including a right to an immediate review in some cases by a Beneficiary and Family Centered Care Quality Improvement Organization (BFCC-QIO) when you think you are being discharged too soon. The hospital or facility should give you an official notice with the QIO’s contact information. Those fast discharge reviews are not the same paperwork as a later claim redetermination, and the deadlines can be measured in hours or days, not months.
A coverage appeal is not a guarantee of payment. It is a right to have the decision reviewed under official rules. Write a clear statement: what was denied, the dates, why you think coverage criteria were met, and what documents you are attaching. Stay factual. Insults and threats do not substitute for medical records.
If you cannot afford a service while an appeal is pending, ask the provider whether official expedited review, a payment plan, or another coverage source (such as Extra Help or a Medicare Savings Program, described on Medicare.gov) may apply. Do not ignore bills, because collection can proceed depending on the situation; also do not assume you must pay a denied claim before you are allowed to appeal. The notice and SHIP can clarify that point for your case.
SHIP counselors and 1-800-MEDICARE (1-800-633-4227; TTY 1-877-486-2048) can help you identify the correct first level. Senior legal-aid programs in some areas can help with later levels. If you appointed a family member, give them copies of the Medicare card, the notice and the appeal confirmation.
After a favorable decision, watch the next MSN or Explanation of Benefits to confirm the claim was reprocessed. If it was not, call the contractor or plan with the appeal decision in hand.
Our Medicare Parts A, B, C and D basics article can help you see which type of coverage issued the decision, and Part D formulary rules often sit behind a drug denial. For plan changes after a bad coverage experience, use official enrollment periods rather than treating an appeal as a plan switch.
Building a Record and Following the Decision Letter
Successful first-level appeals often look unglamorous: a dated copy of the notice, a short written statement, and medical records that match the official coverage criteria. Ask the provider for the office notes, test results, and, when relevant, a letter that explains why the service or drug is reasonable and necessary, or why a formulary alternative is not appropriate. Send copies, not your only originals, and write the Medicare Number and claim number on each page as the notice instructs.
Keep a simple appeal log with the date mailed or submitted, the address or fax, a confirmation number if you used a portal, and the official decision due date. Medicare.gov describes a general 60-day decision time for an Original Medicare redetermination after the contractor receives the request. Plans have their own official standard and expedited clocks. If the due date passes with no decision, call the contractor or plan and 1-800-MEDICARE; sometimes a missing document, not a denial, is the delay.
Representatives, including a family member or a benefit counselor, can help if you complete official appointment paperwork. A provider can also file some appeals or can support yours with records, but you should still keep your own copy of what was sent. Translation and accessibility help are available through official Medicare channels if you need them.
When a decision is unfavorable, the letter is the map to the next level, including any amount-in-controversy threshold that applies later. This article does not invent those dollar figures because they are updated. Read the letter, calendar the new deadline, and decide with SHIP whether to continue. Withdrawing an appeal is also allowed in official processes if circumstances change; get that withdrawal in writing if you do it.
Payment pressure can continue while a non-expedited appeal is pending, depending on the provider and the type of claim. Ask the provider about official advance beneficiary notices, if any were issued, and about holding a bill during review. For hospital or SNF discharges, use the fast Quality Improvement Organization process printed on the discharge notice, because those clocks can close in a day.
A coverage win should appear on a later Medicare Summary Notice or plan Explanation of Benefits. If the official decision is favorable but the claim is not reprocessed, send the decision letter back to the contractor or plan and ask for the adjustment. That follow-through is part of the appeal, not an optional courtesy.
Frequently Asked Questions
How long do I have to start an Original Medicare appeal?
File the Level 1 redetermination by the date on your Medicare Summary Notice, unless official good-cause rules apply. Medicare.gov describes a 180-day window to request a Level 2 QIC reconsideration after the MAC decision.
Are Medicare Advantage appeals the same as Original Medicare appeals?
They share a general multi-level structure, but the first step is usually the plan, with standard and expedited time frames described in plan materials and on Medicare.gov.
Can I get a faster decision if I need care soon?
Official rules provide expedited reviews for certain urgent Advantage, Part D and discharge situations. Ask the plan or the Quality Improvement Organization listed on a discharge notice, and have your clinician help when required.
What if I missed the deadline?
Medicare.gov says you may still file an Original Medicare appeal if you can show good cause for missing the deadline. Whether that applies is an official determination, not a courtesy. File as soon as you can and explain the reason.
Is a grievance the same as an appeal?
No. A grievance is generally about service quality or administration. An appeal challenges a coverage or payment decision. Use the path named in the notice.
Do I need a lawyer to appeal?
Not at the first levels. Many people file on their own or with SHIP help. Later levels and federal court are more formal; official amount-in-controversy rules may apply. This is not legal advice about whether to hire counsel.
