Medicare Advantage Prior Authorization: A Family Checklist for Requests, Denials, and Appeals

Prior authorization can feel like a hidden step in care planning. A doctor recommends imaging, therapy, a skilled nursing facility stay, home health, durable medical equipment, or a Part B drug. The family assumes the next step is scheduling. Then the Medicare Advantage plan says the service needs approval first, asks for more records, approves only part of the request, or sends a denial letter with appeal instructions.

This guide explains how families can prepare for that process without turning every appointment into a paperwork emergency. It is educational only. It is not medical, legal, financial, tax, or insurance advice. Medicare Advantage rules, plan documents, provider contracts, and state assistance programs can differ, so families should use the member's plan materials, Medicare resources, and qualified help when a specific decision matters.

What prior authorization means in a Medicare Advantage plan

Medicare Advantage, also called Medicare Part C, is offered by private plans approved by Medicare. These plans must cover medically necessary Medicare Part A and Part B services, but they can use plan networks, referral rules, cost-sharing rules, and utilization management tools. Prior authorization is one of those tools. It means the plan wants to review a service, item, drug, or setting before agreeing that it will cover or pay for it.

For families, the practical question is not whether prior authorization is good or bad in the abstract. The useful question is: "What approval does this plan require before the older adult receives this care, and what proof does the plan need?" CMS explains that a Medicare Advantage enrollee, representative, or provider may request an organization determination from the plan. That term matters because many medical prior authorization decisions are handled as organization determinations.

Prior authorization is especially important before services that are expensive, ongoing, or easy to delay: advanced imaging, inpatient rehabilitation, skilled nursing facility care, outpatient therapy, home health, oxygen, wheelchairs, hospital beds, certain surgeries, and some Part B drugs. The plan's Evidence of Coverage, provider directory, drug documents, and member portal are the first places to confirm whether approval is required.

Why this deserves a family checklist

Prior authorization is common enough that families should treat it as a normal planning step, not as a surprise reserved for crisis days. KFF reported that Medicare Advantage insurers made nearly 53 million prior authorization determinations in 2024, and that 4.1 million requests were fully or partially denied. KFF also found that only a small share of denials were appealed, while most appealed denials were eventually overturned by insurers. Those numbers do not predict what will happen in one person's case, but they show why organized records and timely follow-up can matter.

HHS Office of Inspector General has also raised concerns. In a 2022 review, OIG found that some Medicare Advantage prior authorization denials involved services that met Medicare coverage rules, and that documentation problems or plan criteria could contribute to avoidable friction. The lesson for families is practical: a denial letter is not the end of the conversation, and missing documentation can be as important as the medical facts themselves.

Before a service is scheduled: questions to ask

The best time to ask prior authorization questions is before the appointment, equipment delivery, facility transfer, or treatment start date. Families can use the following script with the provider's office and the plan:

• Does this service, item, drug, facility stay, or therapy plan require prior authorization under this Medicare Advantage plan?
• Who submits the request: the ordering doctor, facility, supplier, pharmacy, or family?
• What diagnosis codes, clinical notes, test results, therapy notes, discharge orders, or letters of medical necessity are needed?
• Is the provider, facility, pharmacy, or supplier in network for this plan?
• Is the request standard or expedited? If expedited, what health risk makes it urgent?
• What reference number should the family write down?
• How will the plan send the decision: portal, fax, mail, phone, or provider office?
• If the plan approves only part of the request, what exactly is approved and for what dates?

Families should avoid relying only on a verbal "it should be covered." A better record is: the date, the person or department contacted, the reference number, what was requested, what documents were sent, and when the plan says it must respond.

Build a simple prior authorization folder

A prior authorization folder does not need to be complicated. It can be a paper folder, a shared cloud folder, or both. The goal is to make the next phone call faster and to prevent lost details when several relatives are helping.

Keep these documents together

• Medicare Advantage card, plan name, member ID, customer service number, and provider services number if available.
• Evidence of Coverage and any plan page that describes prior authorization, referrals, appeals, or out-of-network rules.
• Provider orders, visit notes, discharge summaries, therapy evaluations, test results, and medication lists relevant to the request.
• Names, phone numbers, fax numbers, and portal details for the ordering doctor, facility, supplier, pharmacy, and plan.
• Request date, reference number, status updates, decision letters, denial notices, and appeal deadlines.
• Receipts, invoices, delivery notes, and dates of service if the dispute involves payment after care was received.

Use a one-page tracking sheet at the front. Columns can include date, person contacted, phone number, reference number, what was promised, next deadline, and who in the family owns the next step. This is especially helpful after a hospitalization, when decisions about skilled nursing, rehabilitation, home health, equipment, and transportation may all happen at once.

Standard vs. expedited requests

Not every request has the same timeline. The Medicare appeals publication explains that Medicare Advantage plans must process some advance coverage requests within specific timeframes, including shorter timelines for Part B drugs and services that require prior authorization, and that determinations must be handled as quickly as the person's health requires. Families should read the current plan notice and Medicare materials because the exact route can depend on whether the request is for medical care, a Part B drug, a Part D drug, or payment after the fact.

An expedited request is not simply a request the family wants faster. It is for situations where waiting for a standard decision could seriously harm the person's health or ability to function. The treating clinician is often the strongest voice for explaining urgency. If the family believes speed is medically important, ask the clinician to document why.

If the plan asks for more information

A request for more information can be frustrating, but it is also an opportunity to strengthen the file. Ask exactly what is missing. Is the plan looking for a recent face-to-face visit note, a diagnosis code, a therapy progress note, a failed conservative treatment, an imaging report, a discharge order, or a supplier form? Then ask who must submit it and by what deadline.

Families can help by making the logistics clear: "The plan says it needs the physical therapy evaluation and the hospital discharge summary. Can your office confirm when those were faxed or uploaded, and can we have the confirmation number?" The goal is not to pressure staff, but to prevent a denial caused by missing paperwork.

How to read a denial letter

A denial letter is a working document. Do not skim it and put it aside. Read it with a pen or highlighter and identify five things:

• The exact service, item, drug, or stay that was denied or partially approved.
• The reason for denial, such as not medically necessary, not enough documentation, out-of-network, not a covered benefit, or criteria not met.
• The date on the notice and the appeal deadline.
• The appeal level and how to submit it: address, fax, portal, phone, or form.
• Whether the plan describes a fast appeal option for urgent health situations.

Medicare.gov explains that when a person disagrees with a Medicare health plan decision, the plan must tell the member in writing how to appeal. If the plan does not decide in the member's favor after the first plan review, the appeal can go to an independent organization that works for Medicare, not for the plan.

Appeal preparation checklist

Appeals are easier to prepare when the family separates the plan's reason from the family's frustration. Start with the reason stated in the letter, then gather records that answer that reason directly.

If the plan says the service is not medically necessary

Ask the treating clinician whether they can write a concise statement that connects the requested service to the diagnosis, symptoms, functional limitations, safety risks, failed alternatives, and expected benefit. Include relevant progress notes, test results, therapy notes, and discharge instructions.

If the plan says documentation is missing

Make a list of each missing item and who can provide it. Confirm the destination and method: fax, portal, mail, or plan form. Ask for a submission confirmation. Keep copies.

If the plan approves fewer visits, days, or units than requested

Ask the provider to explain why the full amount was requested. For therapy, that might include progress toward goals, safety concerns, caregiver availability, or the risk of decline. For facility care, it may include nursing needs, rehabilitation tolerance, wound care, medication management, or safe-discharge barriers.

If the issue is network or supplier availability

Ask the plan for in-network options that can provide the service within the needed timeframe. Keep a record if listed providers are unavailable, not accepting patients, too far away, or unable to deliver the ordered equipment.

Who can help

The older adult can usually act for themselves, and a properly appointed representative can help with appeals and plan communications. Medicare's appeals publication explains that treating doctors can ask for certain Medicare Advantage organization determinations or pre-service reconsiderations without a separate representative form, but higher levels or broader family representation may require an Appointment of Representative form or written authorization. Families should follow the plan notice and Medicare instructions carefully.

Good sources of help can include the ordering clinician's office, hospital discharge planner, rehab facility social worker, pharmacist, durable medical equipment supplier, State Health Insurance Assistance Program, and Medicare. If the dispute involves possible billing liability, facility discharge pressure, or major care consequences, families may also want to contact a qualified benefits counselor, patient advocate, or attorney. This guide does not replace that advice.

What changed in recent CMS rules

CMS has been tightening expectations around prior authorization. A 2024 Medicare Advantage and Part D final rule said Medicare Advantage plans must follow Medicare coverage rules for basic benefits and set limits on how internal clinical criteria may be used. The rule also addressed continuity of care, annual review of utilization management policies, and the idea that prior authorization approvals for a course of treatment should remain valid as long as medically reasonable and necessary.

Separately, CMS finalized interoperability and prior authorization requirements aimed at reducing burden and improving electronic access to prior authorization information. CMS says certain provisions are required by January 1, 2026, while many API requirements are primarily due by January 1, 2027. Families do not need to become regulatory experts, but they should know the direction of travel: plans are under pressure to make prior authorization more transparent, faster, and easier to track.

Common family decision points

Before enrollment: If an older adult is comparing Medicare Advantage plans, ask which services require prior authorization, how referrals work, whether preferred doctors and hospitals are in network, and how the plan performed on complaints and appeals. The lowest premium is not the only practical factor.

Before a planned procedure: Ask the provider office to confirm authorization before the date of service. Ask whether the facility, anesthesiology group, imaging location, therapy provider, and post-acute options are also in network.

During a hospital discharge: Ask early whether the next setting needs plan approval. If the family is considering skilled nursing, inpatient rehab, home health, or equipment, prior authorization can affect timing. Keep the discharge planner's notes and the plan's decision letters.

After a denial: Decide quickly who will lead the appeal, who will contact the doctor, and who will track deadlines. Do not wait until the deadline is close if the person's health or safe discharge depends on the service.

A practical next-step plan

1. Find the plan's Evidence of Coverage and save the appeal contact information.
2. Make a list of services the older adult already uses that may require authorization: therapy, equipment, imaging, specialty drugs, home health, facility care, or procedures.
3. Ask each key provider how their office handles Medicare Advantage prior authorization requests.
4. Create a folder for plan notices, request numbers, clinical notes, and denial letters.
5. If a denial arrives, read the reason first, then gather records that answer that reason directly.
6. Use Medicare.gov, the plan notice, SHIP counseling, and qualified professionals when the stakes are high or deadlines are unclear.

Prior authorization is stressful when families discover it at the last minute. It becomes more manageable when the family treats it as a repeatable workflow: ask early, document every request, keep the clinician involved, read every notice, and respond to the actual reason given by the plan.

Sources

• CMS: Organization Determinations
• Medicare.gov: Appeals in Medicare health plans
• Medicare.gov: Medicare Appeals publication
• CMS: 2024 Medicare Advantage and Part D Final Rule fact sheet
• CMS: Interoperability and Prior Authorization Final Rule
• KFF: Medicare Advantage prior authorization determinations in 2024
• HHS OIG: Some Medicare Advantage organization denials of prior authorization requests raise concerns