Medicare Advantage Denials: How Seniors Can Appeal in 2026

Quick Reference: Which Path Fits?

What Has Changed

• CMS updated its appeals guidance on July 6, 2026. The current CMS appeals guidance reflects 2026 changes to Medicare Advantage organization determinations and appeals.
• The Part C outside reviewer changed. For Part C cases received on or after May 1, 2026, C2C Innovative Solutions is the Independent Review Entity (IRE). MAXIMUS continues to handle older cases it received through April 30, 2026.
• Some decisions made during care are clearly appealable. Under the 2026 Medicare Advantage final rule, adverse decisions made while an enrollee is receiving services can qualify as organization determinations subject to appeal. The 2026 MA final rule also strengthened notice protections when providers request decisions for patients.
• Initial prior authorization timing is faster than appeal timing. For affected Medicare Advantage medical items and services, excluding drugs, standard prior authorization decisions generally must be made within seven calendar days and urgent decisions within 72 hours. These initial-decision rules are different from the 30-day Level 1 appeal timeframe. See CMS’s prior authorization timing page.
• New public data show appeals still matter. A KFF review of 2025 public metrics from large Medicare Advantage insurers found that, on average, 12% of standard prior authorization requests were denied and 67% of appealed standard denials were overturned. The data are limited and do not describe every plan or service. See the 2025 prior authorization data.
• Representative-form guidance was refreshed in September 2026. CMS says the current CMS-1696 or a qualifying written equivalent may be used while an updated form awaits approval.

What a Medicare Advantage Denial Means

A Medicare Advantage plan is a private plan approved by Medicare. It must cover Medicare-covered Part A and Part B benefits, but it may use networks, prior authorization, and other utilization rules within Medicare requirements.

A plan decision about coverage, payment, or how much you owe is generally an organization determination. The first appeal of an unfavorable decision is a reconsideration. CMS explains this on its reconsideration rules page.

An appeal challenges a coverage or payment decision. A grievance is a complaint about plan service, delays, behavior, or certain procedural problems. CMS lists examples in its grievance rules.

This guide covers medical denials, including prior authorization, payment, equipment, skilled nursing, home health, and Part B drugs. Pharmacy drug denials use the Part D process. For plan-required drug sequences, see our step therapy guide.

Read the Denial Notice Before You Call

Plans must give written information about denials and appeal rights. A common form is the Notice of Denial of Medical Coverage or Payment, also called the Integrated Denial Notice. See the official CMS denial notice page.

Mark these items before you call:

• Notice date: this usually starts the 65-day Level 1 appeal period.
• What was denied: note the service, item, days, visits, or payment.
• Why: copy the exact denial reason.
• Case number: place it on every page you send.
• How to appeal: use the fax, mail, portal, or phone directions on the notice.
• Fast-review instructions: look for them if delay could harm health.

If a family member will act for the member, the plan may require formal permission. As of September 2026, CMS says the current CMS-1696 representative form, or a qualifying written equivalent, may be used while an updated form awaits approval. If the paperwork is an Advance Beneficiary Notice instead, see our Medicare ABN guide.

Standard or Expedited Appeal?

A standard Level 1 pre-service appeal may take up to 30 calendar days. If waiting could seriously jeopardize life, health, or the ability to regain maximum function, ask for an expedited appeal.

A physician’s expedited request must be handled as expedited. Some item-and-service appeal timeframes can be extended by up to 14 days in limited cases, but Part B drug appeal timeframes cannot be extended.

How to File the Level 1 Appeal

Follow the denial notice. A reconsideration generally must be filed within 65 calendar days from the date on the notice. If you miss that deadline, file promptly and explain why. Good cause may allow late filing, but approval is not guaranteed.

Standard requests normally must be written unless the plan accepts verbal requests. Expedited requests can be made by phone or in writing. Keep proof of receipt.

Put these facts in the appeal

• Member name, Medicare number, plan number, case number, and notice date.
• The exact item, service, Part B drug, or payment being appealed.
• A clear statement that you disagree with the denial.
• The medical or factual reason the decision should change.
• Representative information, if someone is acting for the member.
• Supporting records, or a note that more evidence will follow.

You do not need legal wording. A simple request to reconsider the denial is enough to show you want an appeal.

Ask the Doctor to Answer the Denial Reason

A short note that says “patient needs this” may not be enough. The strongest medical support connects the person’s condition to the exact rule or reason the plan used.

• Name the care: identify the surgery, therapy, skilled nursing stay, home health visits, equipment, test, or drug.
• Describe the condition: include diagnosis, symptoms, function, recent change, and safety concerns.
• Explain why now: state what could happen if care is delayed or reduced.
• Answer the plan: if the plan says the care is not medically necessary, explain why it is necessary for this patient.
• Explain alternatives: state what was tried, what failed, and why a lower level of care may be unsafe or ineffective.
• Attach records: include recent notes, therapy progress, test results, imaging, wound records, medication history, or discharge planning documents that matter.

If the denial involves home health, our home health denial guide covers homebound status, skilled need, documentation, and appeal preparation in more detail.

When Care Is Ending Too Soon

Hospital discharge and the ending of skilled nursing facility (SNF), home health, hospice, or comprehensive outpatient rehabilitation facility (CORF) services use a special fast-review process. Timely requests can go directly to a BFCC-QIO. See CMS BFCC-QIO review rules.

• Hospital: request the fast appeal no later than the scheduled discharge day.
• SNF, home health, CORF, hospice: the notice generally requires a request by noon the day before the listed end date.
• Missed deadline: other review may remain, but payment protection can change.

A June 2026 HHS OIG report reviewed SNF admission requests handled by 19 Medicare Advantage organizations in June 2024. They denied 12% of requests. Only 18% of SNF denials were appealed, but 95% of appealed denials were overturned. This does not predict an individual case, but it shows why an SNF denial may be worth challenging. See the OIG SNF denial report.

For short-deadline steps, use our fast Medicare appeal guide. If inpatient versus observation status is the problem, see our observation status guide.

What Happens After Level 1?

Since May 1, 2026, C2C Innovative Solutions has been the Part C IRE for newly received cases. CMS posts current contractor information on the Part C IRE page. If the plan misses the Level 1 decision deadline, CMS guidance treats that as an adverse decision and requires forwarding to the IRE.

For Level 3, see CMS ALJ hearing rules. The official 2026 threshold notice sets $200 for ALJ review and $1,960 for judicial review.

Best Next Move by Denial Type

Missing records or coding

Ask the authorization staff exactly what was missing. A corrected request may solve a technical problem, but still protect the appeal deadline unless the plan confirms the denial was reversed.

Skilled nursing or rehab

Gather therapy, nursing, discharge-planning, and physician records showing why the requested level of care is medically necessary. If services are ending now, use the special fast path.

Medical equipment

Ask the clinician to explain the diagnosis, functional need, expected use, and why a different item would not meet the need.

Part B drug

The standard appeal timeframe is seven days. If waiting could seriously harm health, request expedited review.

Payment denied after care

Send the denial and itemized bill. Ask billing to place the account on hold. Do not assume the full bill is legally owed before the coverage dispute is resolved.

Decision during treatment

2026 rules clarified that adverse decisions made while services are being received can carry organization-determination appeal rights. Ask for the written decision and instructions.

Medicare and Medicaid

Dual-eligible members may have added Medicaid rights. See our dual eligible guide. If a Qualified Medicare Beneficiary is billed Medicare cost-sharing, also see QMB billing protections.

What to Do While the Appeal Is Pending

• Check messages every day. The plan or reviewer may ask for more evidence quickly.
• Keep the clinician involved. Ask whether new symptoms, test results, or notes should be added.
• Keep a call log. Write the date, time, number called, person’s name, and reference number.
• Ask about safe short-term care. Do not stop or change medical care without talking with the treating professional.
• Do not ignore bills. Tell billing in writing that coverage is under appeal and ask for a hold when possible.
• Recheck urgency. A standard case can become urgent if health worsens.

Documents to Gather

• Full denial notice and any Explanation of Benefits
• Medicare card and plan member card
• Case number and appeal deadline
• Doctor or specialist support letter
• Recent office and hospital notes
• Therapy or nursing progress notes
• Test results, imaging, or lab reports
• Medication history when relevant
• Records showing what was already tried
• Discharge planning documents when relevant
• Representative appointment if needed
• Fax, portal, or mailing proof

Common Mistakes to Avoid

• Waiting for every record: protect the deadline first, then send added evidence.
• Using the wrong appeal path: care-ending cases may have a much faster special review.
• Arguing generally: answer the exact denial reason.
• Assuming the doctor filed: ask for the appeal confirmation or fax receipt.
• Confusing initial authorization with appeal timing: the seven-day 2026 prior authorization rule is not the same as the 30-day standard appeal timeframe.
• Ignoring a late denial: if the plan misses its deadline, ask whether it forwarded the case to the IRE.
• Letting a helper call without permission: formal representative paperwork may be needed.

Phone Scripts You Can Use

Official and Free Help

• Medicare: call 1-800-MEDICARE (1-800-633-4227). TTY users can call 1-877-486-2048. The Medicare contact page lists current contact options.
• SHIP: local State Health Insurance Assistance Program counselors provide free, one-on-one Medicare help. Use the SHIP locator or call 1-877-839-2675.
• BFCC-QIO: for service-ending fast appeals, use the number on the notice or ask Medicare which BFCC-QIO serves your state.
• Medicare Rights Center: this nonprofit offers Medicare counseling through its Medicare Rights helpline at 1-800-333-4114.