A Medicare Advantage Denial Starts a Clock: The Deadlines on Your Appeal
By YourResourceHub Editorial Team · Reviewed by Steven Sun · 6 min read · Last updated October 20, 2026
- Starting in 2026, your Medicare Advantage plan must give you a specific written reason for any denied prior authorization request, under a Centers for Medicare & Medicaid Services (CMS) final rule.
- Your plan must decide a standard prior authorization request within 7 calendar days, and an urgent one within 72 hours.
- You have 65 days from the date on the denial notice to file your Level 1 appeal, called a Health Plan Reconsideration.
- A Level 3 hearing before the Office of Medicare Hearings and Appeals requires a case worth at least $200 in 2026.
A Medicare Advantage plan has 72 hours to decide an urgent prior authorization request and 7 calendar days for a standard one. If it denies you, you have 65 days from the date on that denial notice to file a Level 1 appeal, called a Health Plan Reconsideration.
In this article
- What a prior authorization decision is
- The clock on a decision
- What a denial letter must tell you in 2026
- The 5 levels of a Medicare Advantage appeal
- What seniors get wrong
- Frequently asked questions
What a prior authorization decision is
Medicare Advantage plans call a coverage decision an “organization determination.” Before you get certain services, drugs, or supplies, your plan, your doctor, or you can request one to find out whether it’s covered. You or your representative can request an organization determination either orally or in writing.
If a plan approves the request in advance, that’s a prior authorization. If it denies the request, that denial is what starts the appeal process below.
Say a 71-year-old named Carmen needs a knee replacement and her plan denies the prior authorization request her surgeon submitted. Nothing about Carmen’s case is unusual: a 2024 CMS rule set uniform decision timelines and notice requirements for exactly this situation across every affected Medicare Advantage plan.
There’s one wrinkle worth knowing about. If a plan provider refers a patient for a covered service, or to an out-of-network provider, without getting an organization determination first, that’s called “plan directed care.” In most cases the patient still won’t owe more than the plan’s usual cost sharing, so a missing prior authorization at the provider’s end doesn’t automatically become the patient’s financial problem.
The clock on a decision: 7 days standard, 72 hours expedited
Under CMS’s Interoperability and Prior Authorization final rule, Medicare Advantage plans must send a prior authorization decision within 72 hours for an expedited, urgent request, and within 7 calendar days for a standard, non-urgent one. Carmen’s surgeon can request the faster timeline if waiting the standard period could seriously jeopardize her health.
Those are the timelines for the initial decision. If the plan denies the request and Carmen appeals, a different set of clocks applies to the appeal itself, covered in the table below.
A plan can extend its own appeal timeframe by up to 14 days in some cases, such as needing more information from a non-contract provider, but only when the extension is genuinely in the patient’s interest. Carmen’s plan would have to notify her in writing if it takes that extension, explain why, and tell her what to do if she disagrees with the decision to extend.
What a denial letter must tell you in 2026
Beginning in 2026, plans must provide a specific reason for any denied prior authorization decision, whatever channel they use to send it: portal, fax, email, mail, or phone. That requirement exists so a patient or provider can actually understand why a request was denied and can resubmit it with the right information, instead of guessing.
This is a new federal floor, not a plan-specific courtesy. If Carmen’s denial letter only says “not medically necessary” with no further explanation, that falls short of what the rule requires starting this year. The same rule also requires plans to publicly report certain prior authorization metrics every year by posting them on their own website, which gives patients and advocates a way to see how a plan’s denial rates compare over time, even though it doesn’t help with any single appeal in progress.
The 5 levels of a Medicare Advantage appeal
Every Medicare Advantage plan uses the same 5-level appeal structure. At each level, you get a decision letter explaining how to move to the next one if you disagree.
| Level | Who decides | Standard timeframe | Fast appeal timeframe | Deadline to request |
|---|---|---|---|---|
| 1. Health Plan Reconsideration | Your own plan | 30 days (pre-service) | 72 hours | 65 days from the denial notice |
| 2. Independent Review Entity | A contractor independent of your plan | 30 days (pre-service) | 72 hours | Automatic if your plan upholds its denial |
| 3. Office of Medicare Hearings and Appeals | An administrative law judge or attorney adjudicator | Varies by case | Varies by case | 60 days from the Independent Review Entity’s decision; case must be worth at least $200 in 2026 |
| 4. Medicare Appeals Council | A federal review board | Varies by case | Varies by case | 60 days after you get the Level 3 (OMHA) decision |
| 5. Federal district court | A U.S. District Court judge | Set by the court | Not applicable | 60 days after you get the Level 4 (Appeals Council) decision; case must be worth at least $1,960 in 2026 |
If Carmen loses her Level 1 reconsideration, her plan automatically forwards the case to Level 2. She doesn’t have to refile from scratch, but she does need to track each new deadline that starts once a decision letter arrives. If her situation changes before she’s reached a decision, such as a move that opens a Special Enrollment Period, that’s a separate process from the appeal and doesn’t pause or replace it.
What seniors get wrong about appealing a denial
The most common mistake is waiting too long to start, often because the denial letter is confusing or buried in other mail. A second mistake is not asking for the expedited timeline when it genuinely applies; a 30-day standard review can feel endless when a surgery is already scheduled. A third is assuming a Medicare Advantage denial means switching to Original Medicare with a Medigap policy is the only fix; appealing the specific decision is almost always the faster path, and a plan switch has its own separate enrollment rules.
Frequently asked questions
Do I qualify for an expedited appeal if I’m not currently hospitalized? Yes. An expedited appeal is available whenever a doctor states that waiting for the standard timeline could seriously jeopardize your life, health, or ability to regain maximum function, regardless of where you are when you file.
What happens if my plan misses its own decision deadline? A missed deadline doesn’t mean you lose. If your plan doesn’t decide within its required timeframe, your case is treated as a denial and automatically moves forward to the next appeal level.
Can my doctor file the appeal for me? Yes. For a service you haven’t received yet, your doctor can request a Level 1 reconsideration on your behalf, though they must notify you that they’ve done so. Your doctor’s involvement doesn’t replace your own right to track the case and respond to any follow-up requests from your plan.
Does filing an appeal cost me anything? No filing fee is required to appeal a Medicare Advantage denial at any of the 5 levels described here. Gathering supporting records, such as a doctor’s note, strengthens your case, but there’s no charge from Medicare or the plan itself for requesting a review.
What if I miss the 65-day deadline to file my first appeal? You can still file late if you include a reason for the delay, but there’s no guarantee it will be accepted, so filing within the 65-day window is the safer path whenever possible.
