How to Appeal a Medicare Part D Prescription Drug Coverage Denial

What to do when Medicare Part D denies your prescription

If your Medicare prescription drug plan denies a medication or refuses reimbursement, the next step depends on whether the plan has already issued a formal coverage determination.

If you have a written denial, request a Level 1 redetermination from the plan. You generally have 65 calendar days from the date of the denial notice to request this appeal.

If you have only been told at the pharmacy that the prescription is not covered, contact the plan and ask for an initial coverage determination or an exception. That initial request is different from appealing a formal denial.

The responsible organization for the first appeal is your Medicare Part D plan. The Centers for Medicare & Medicaid Services (CMS) establishes the federal rules governing the process.

Start with the official Medicare prescription drug appeals instructions and the appeal directions in your plan's denial notice.

Coverage determination versus redetermination

The most important distinction is whether the drug plan has already made an appealable decision.

CMS explains the initial decision process in its Part D coverage determination guidance.

What Part D prescription decisions can you challenge?

Medicare Part D coverage determinations address whether a plan will provide or pay for a prescription drug and certain conditions attached to coverage.

Common issues include:

• Formulary denial: The medication is not on the plan's covered drug list.
• Prior authorization: The plan requires approval before covering the prescription.
• Step therapy: The plan requires the patient to try another medication first.
• Quantity limits: The plan restricts the amount or dosage covered.
• Tiering exception: The patient seeks a lower cost-sharing tier where the exception rules allow it.
• Reimbursement denial: The plan refuses payment for a prescription already purchased.
• Disputed cost sharing: The enrollee disagrees with the amount the plan requires for a Part D drug.

Different issues require different supporting information. A prescriber's clinical explanation can be especially important when the request concerns a medical necessity exception or a plan restriction.

How to get a formal coverage decision before appealing

If the plan has not issued an unfavorable coverage determination, ask it to decide whether it will cover the prescription or reimburse the expense.

You, your prescriber, or an authorized representative may request a coverage determination. For a medication you have not received, the plan can generally accept a request verbally or in writing. For reimbursement, a written request is ordinarily required unless the plan accepts verbal requests.

You may use the Model Coverage Determination Request Form, a plan-specific form, or another acceptable request. CMS provides the model form through its Medicare Part D forms page.

How quickly must the plan make its initial decision?

For a drug benefit request that does not involve an exception, CMS generally requires a decision within 72 hours for a standard request or 24 hours for an expedited request.

For an exception request, these timeframes generally begin when the plan receives the prescriber's supporting statement. For a payment request, the plan generally must decide and make payment when appropriate within 14 calendar days.

These are initial coverage determination periods, not the deadlines for a Level 1 appeal.

When do you need a prescription drug exception?

An exception is a type of coverage determination that asks the plan to depart from an applicable formulary or utilization-management rule.

For example, a patient may need a medication that is not on the plan's formulary, or the prescriber may believe that a required alternative medication is not appropriate.

The prescriber must provide a supporting statement explaining the medical reasons for the exception. The plan evaluates that statement under the applicable Part D requirements.

CMS explains exception requests in its prescription drug exceptions guidance.

If the plan denies the exception, you can appeal the unfavorable coverage determination through the redetermination process.

How to submit your first Medicare prescription drug appeal

A redetermination is the first formal appeal of an unfavorable Part D coverage determination. It is reviewed by the prescription drug plan that issued the original decision.

You, your appointed representative, or your prescribing physician or other prescriber may request the redetermination.

1. Locate the plan's denial notice and identify the date of the decision.
2. Read the instructions describing where and how to submit the appeal.
3. Identify the drug, the disputed decision, and the reasons you disagree.
4. Ask your prescriber to supply relevant medical evidence or an explanation supporting the medication.
5. Choose a standard or expedited appeal, as appropriate.
6. Submit the request using the plan's accepted method.
7. Keep a copy of the appeal and any confirmation of submission.

The standard filing period is 65 calendar days from the date of the coverage determination notice. If you miss it, explain why the appeal is late and request consideration for good cause.

CMS provides the Model Redetermination Request Form on its official Part D forms page.

Can you appeal by phone?

An expedited redetermination may be requested verbally or in writing.

A standard redetermination generally must be submitted in writing unless the plan accepts verbal requests. Check the plan's Evidence of Coverage or call its member services number to confirm its accepted procedures.

There is no single universal online submission portal for Level 1 Part D appeals. Some plans may offer electronic submission, but you must use the instructions and channels accepted by your particular plan.

Medicare Part D appeal deadlines

For Level 1 appeals, CMS establishes different decision periods depending on the type and urgency of the request.

The plan must act as quickly as the enrollee's health requires, subject to the applicable maximum period.

The time limits are measured from receipt of the redetermination request under the governing rules. They are different from the deadline for submitting the appeal.

See the CMS redetermination guidance.

When can you request a fast appeal?

An expedited redetermination is available when waiting for the standard appeal period could seriously jeopardize your life, health, or ability to regain maximum function.

You or your prescriber may request expedited review. If the plan determines that the urgency requirements are met, or the prescriber indicates that waiting could seriously jeopardize your health under the applicable standard, the plan must process the request on an expedited basis.

The expedited redetermination decision period is 72 hours.

An expedited appeal is not available for a request that concerns only payment for a medication already purchased. Payment appeals follow the standard payment review process.

If the plan refuses to expedite a qualifying request, you may be able to file an expedited grievance concerning that refusal. CMS describes the separate grievance rules in its Part D grievances guidance.

What evidence can help your prescription drug appeal?

The most useful supporting information directly addresses the plan's stated reason for denying the medication.

• Denial based on a formulary restriction: Ask the prescriber to explain why the requested medication is medically necessary.
• Step therapy denial: Provide information about why required alternatives are unsuitable or have not worked, when relevant.
• Prior authorization denial: Address the plan's stated clinical criteria and supply relevant medical information.
• Quantity limit denial: Explain the prescribed dosage and medical reasons for the requested amount.
• Payment denial: Provide the pharmacy receipt, prescription details, and an explanation of why reimbursement is appropriate.

Do not rely only on a general statement that the medication is important. Connect the medical explanation to the specific restriction or reason in the denial notice.

Can your doctor submit the appeal?

Yes. Under Medicare Part D rules, a prescribing physician or other prescriber may request a coverage determination, redetermination, or Level 2 reconsideration on the enrollee's behalf without being formally appointed as a representative.

If a different person is acting as an appointed representative, the enrollee and representative generally must provide the appropriate authorization, such as Form CMS-1696 or an accepted written equivalent.

The official CMS Part D forms page explains these requirements.

What if you already paid for the prescription?

If you purchased the medication and the Part D plan denied your request for reimbursement, you can challenge that payment decision.

First determine whether the plan has issued a formal coverage determination denying payment. If not, submit a payment coverage determination request through the plan's accepted process.

If the plan has formally denied reimbursement, request a Level 1 payment redetermination. Include the denial notice, medication details, proof of purchase, and any relevant supporting explanation.

The plan generally must issue its payment redetermination decision and make payment when appropriate within 14 calendar days after receiving the request.

A payment-only dispute does not qualify for an expedited benefit appeal merely because reimbursement is financially important.

How to file a Level 2 Medicare Part D appeal

If the plan denies your redetermination in whole or in part, you may request a Level 2 reconsideration by the Medicare Part D Independent Review Entity (IRE), also known as the Qualified Independent Contractor.

CMS identifies C2C Innovative Solutions, Inc. as the current Part D Independent Review Entity.

CMS's current Part D reconsideration guidance requires a written request within 65 calendar days from the date of the plan's redetermination decision notice. Follow the instructions in that notice.

You may use the official Request for Reconsideration of Medicare Prescription Drug Denial form, available from the CMS forms page.

Where do you submit the Level 2 appeal?

Unlike the Level 1 appeal, which goes to your prescription drug plan, the Level 2 request goes to the independent review entity.

CMS lists the following standard mailing address:

C2C Innovative Solutions, Inc.
Part D Drug Reconsiderations
P.O. Box 44166
Jacksonville, FL 32231-4166

CMS also identifies an IRE portal and a separate address for courier deliveries. Check the official Part D reconsideration instructions before submitting your appeal.

The IRE generally must decide within 7 calendar days for a standard benefit appeal, 72 hours for an expedited appeal, or 14 calendar days for a payment appeal. Certain permitted extensions may apply.

What happens if the independent reviewer also denies coverage?

Medicare Part D has five successive appeal levels:

1. Redetermination by the Part D plan.
2. Reconsideration by the Independent Review Entity.
3. Hearing before an Administrative Law Judge.
4. Review by the Medicare Appeals Council.
5. Review by a federal district court.

Further appeals are subject to procedural requirements, filing deadlines, and, at certain levels, minimum amount-in-controversy thresholds.

Each unfavorable decision should explain the available next step. Do not assume that every prescription dispute automatically qualifies for an Administrative Law Judge hearing or judicial review.

See the CMS Part D appeals overview.

Common mistakes when appealing a Medicare drug denial

• Appealing before a formal denial: Request an initial coverage determination if the plan has not yet issued one.
• Missing the filing deadline: Record the date on the denial notice and submit the redetermination request promptly.
• Using the wrong recipient: Level 1 appeals go to the drug plan; Level 2 appeals go to the Independent Review Entity.
• Omitting prescriber support: Medical evidence may be crucial when challenging formulary restrictions or other clinical requirements.
• Requesting expedited reimbursement: Expedited review applies to qualifying drug benefit requests, not payment-only disputes.
• Confusing Part B and Part D: A medication covered under Part B may follow a different Medicare appeals process.
• Assuming all plans accept online appeals: Check the specific submission methods in the plan's denial notice and Evidence of Coverage.
• Ignoring the Level 2 deadline: An unfavorable redetermination does not automatically initiate an ordinary Part D independent reconsideration.

Official Medicare Part D appeal resources

• Medicare Drug Plan Appeals — beneficiary guidance and appeal stages.
• CMS Coverage Determinations — initial decisions and deadlines.
• CMS Exceptions — formulary and utilization-management exception requirements.
• CMS Part D Forms — model forms and representative authorization information.
• CMS Redetermination Guidance — Level 1 appeals.
• CMS Independent Reconsideration Guidance — Level 2 appeals.
• CMS Appeals Overview — further review.

If you also have a separate claim involving medical services under Original Medicare, that process differs from a Part D prescription appeal. The Helpydo guide to filing an Original Medicare claim yourself explains that distinct situation.