A denied claim doesn’t have to be the end of the story. Medicare has a formal appeals process, and a meaningful share of denials get overturned when beneficiaries push back with the right documentation. If you’ve received a denial notice and aren’t sure what to do next, here’s how the process actually works.
Understand Why You Were Denied First
Every denial notice — whether it’s a Medicare Summary Notice for Original Medicare or a denial letter from a Medicare Advantage or Part D plan — should explain the specific reason for the denial. Common reasons include the service being deemed not medically necessary, missing documentation, the provider being out-of-network, or the service falling outside what the plan covers. Before you can build an effective appeal, you need to know exactly what’s being disputed, since a generic appeal is far less effective than one that directly addresses the stated reason for denial.
The Appeals Process Differs by Coverage Type
Original Medicare uses a five-level appeals process, starting with a redetermination request filed with the Medicare Administrative Contractor that processed the original claim. You generally have 120 days from the date on your Medicare Summary Notice to file this first-level appeal.
Medicare Advantage plans have their own internal appeals process, generally requiring you to first request an appeal directly with the plan. Medicare Advantage plans are required to respond within specific timeframes — often faster for urgent situations than for standard requests.
Part D appeals start with a coverage determination request to your plan, followed by a redetermination if the initial request is denied. Because prescription needs can be time-sensitive, Part D plans have expedited appeal options when a delay could seriously jeopardize your health.
Gather Supporting Documentation
The strength of an appeal usually comes down to documentation. This can include a letter from your doctor explaining why the service or item was medically necessary, relevant medical records, and any additional clinical information that supports your case. If your doctor’s office isn’t sure why a claim was denied, share the specific denial reason with them directly and ask for a letter addressing that exact issue rather than a general statement of support.
Know Your Deadlines
Appeals have strict deadlines at each level, and missing one can mean losing your right to that level of appeal. Generally:
- Original Medicare redetermination: 120 days from the Medicare Summary Notice date
- Medicare Advantage internal appeal: Typically 65 days from the denial notice, though this can vary
- Part D coverage redetermination: 60 days from the denial notice
Mark these deadlines the moment you receive a denial notice rather than waiting until you’re ready to file, since gathering documentation takes time and you don’t want a deadline to pass while you’re still preparing your case.
If the First Appeal Doesn’t Work
If your first-level appeal is denied, don’t assume that’s the end of the road. Both Original Medicare and Medicare Advantage/Part D appeals processes have multiple levels, escalating from redetermination or reconsideration through independent review, and eventually to an Administrative Law Judge hearing for cases meeting a minimum dollar threshold. Each level involves a different reviewer than the one before it, which means a claim denied at one stage genuinely can be approved at the next.
Getting Help With an Appeal
You don’t have to navigate this alone. Your State Health Insurance Assistance Program (SHIP) offers free, unbiased counseling on Medicare appeals, and your doctor’s office can often help gather and submit clinical documentation. A licensed insurance agent can also help you understand your plan’s specific appeals process and what documentation tends to be most effective.
A Quick Appeals Checklist
- Read the denial notice carefully and identify the exact stated reason.
- Note your appeal deadline immediately.
- Request a supporting letter and documentation from your doctor addressing that specific reason.
- File your appeal in writing, following your plan’s specified process.
- Keep copies of everything you submit, and follow up if you don’t receive a timely response.
For more on navigating coverage questions like this, our FAQ page covers other common Medicare questions, and you can schedule time with an agent if you’d like help understanding your specific plan’s appeals process.
Bottom Line
A denial isn’t necessarily the final answer — Medicare’s appeals process exists precisely because coverage decisions aren’t always right the first time. Understanding the process, meeting your deadlines, and gathering strong supporting documentation gives you a real chance at getting a denial overturned.
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Have questions? Schedule a free review with Kayla Price, a licensed insurance agent at Price Services Group. Call 866-648-1578 or visit priceservicesgroup.com/schedule.