Medicare Advantage Non-Contract Provider Payment Appeals: Filing Guide

The first operational decision is classification. A claim denied in whole or in part can create an organization-determination appeal. A paid claim where the provider disputes only the rate or methodology may belong in the plan's non-contract provider payment-dispute channel. A contracted-provider dispute is usually controlled by the provider agreement. Mixing those paths can produce a dismissal even when the underlying reimbursement concern is legitimate.

This guide addresses Medicare Advantage Part C post-service payment denials pursued by a provider that does not contract with the MA plan. It does not cover Original Medicare redeterminations, Part D drug appeals, pre-service coverage requests, discharge appeals, Medicaid managed care, or a contracted provider's contractual remedies.

Medicare Advantage payment appeal at a glance

1. Confirm that this is a Part C non-contract payment denial

Verify the beneficiary's coverage on the dates of service, the exact MA plan and benefit package, the provider's contracting status, and whether the services were already furnished. A request made before or during care is a coverage request even if the final decision arrives after care ends. A request submitted after the service is completed is processed as a request for payment.

• Confirm Medicare Advantage enrollment and the responsible plan for each date of service.
• Confirm that the billing provider is not contracted for the disputed service and date.
• Determine whether the remittance denies payment, pays some lines while denying others, or pays all lines at a disputed amount.
• Identify any authorization, notification, medical-necessity, coverage, coding, duplicate, or timely-filing rationale.
• Confirm that the patient has not been billed beyond permitted cost sharing and that collection activity is controlled.

2. Distinguish denial reconsideration from an amount-only dispute

CMS states that MA organizations, Cost plans, and PACE organizations generally must reimburse non-contract providers for covered Part A and Part B services at no less than the amount payable under Original Medicare, and non-contract providers must accept the amount collectible under Original Medicare as payment in full. The calculation can still depend on provider type, service, location, special payment rules, enrollee cost sharing, and whether another law supplies a different payment method.

3. Establish the remittance-notification date

CMS's current operational guidance states that a non-contract provider has 65 calendar days from the remittance-notification date to request reconsideration of a payment denial. Preserve the electronic remittance advice, paper notice, portal record, envelope or delivery evidence, and the date the notice entered the provider's system. Do not substitute the internal posting date when reliable plan evidence shows a different notification date.

The regulation describes a 60-day reconsideration filing period and permits a good-cause extension. CMS's July 2026 guidance operationalizes appeal notices using a 65-calendar-day period. Provider teams should follow the current notice and guidance, file as early as possible, and include a written good-cause explanation with supporting facts if the ordinary period has passed rather than assuming an extension.

4. Execute a claim-specific Waiver of Liability

A non-contract provider appealing on its own behalf must submit a WOL stating that it will not bill the enrollee regardless of the result. CMS explains that, after a valid WOL, the provider is pursuing its own reconsideration and is not required to submit an appointment-of-representative form merely to bring that appeal.

• Use the plan-provided or CMS-consistent WOL for the identified enrollee and disputed services.
• Identify the claim, dates of service, provider, and plan consistently across the WOL and appeal.
• Confirm the signer is authorized for the billing provider.
• Stop impermissible patient billing and preserve evidence that the account is held harmless.
• Retain the executed WOL in the appeal packet and the patient account record.

If the provider omits the WOL, CMS guidance directs the plan to make and document reasonable efforts to obtain it. The plan does not have to perform substantive review until it receives a valid WOL and may dismiss the appeal if the form remains missing at the end of the adjudication period. The safer control is to submit a complete WOL with the initial reconsideration.

5. Build the reconsideration around the stated denial

The appeal should make it easy for a reviewer to connect each disputed line to the requested remedy and supporting evidence. Include the original claim and any corrected claim, the remittance showing the denial, the WOL, the plan's notice, relevant authorization records, clinical documentation, and a concise issue statement.

1. State that the submission requests reconsideration of a Medicare Advantage payment denial.
2. Identify the enrollee, plan, claim number, dates of service, denied lines, billed amount, and requested disposition.
3. Quote the plan's denial rationale and answer it directly.
4. Index clinical, authorization, coding, and transmission evidence.
5. Attach the signed WOL and confirm the enrollee is held harmless.
6. Use the plan's stated reconsideration destination and preserve proof of receipt.

6. Track the plan's 60-day payment reconsideration period

Under 42 C.F.R. § 422.590, an MA organization has no more than 60 calendar days after receiving a standard payment reconsideration to issue and effectuate a completely favorable determination. If it affirms the adverse organization determination in whole or in part, it must prepare a written explanation and send the case file to the CMS independent review entity within the same 60-day period.

If the plan misses the payment-reconsideration timeframe, the regulation treats the failure as an affirmation and requires referral to the independent entity. Provider teams should preserve the plan receipt date, acknowledgement, requests for records, responses, and all status contacts. A payment appeal ordinarily does not become expedited merely because reimbursement is important to the provider; expedited review rules center on the enrollee's health and generally do not fit payment for completed services.

7. Prepare for automatic independent review

The provider does not file a separate level-two request when the plan timely affirms a valid Part C reconsideration. The plan forwards the adverse case to the independent review entity. That makes the level-one packet especially important: the record should already contain the WOL, claim and remittance, issue-specific evidence, and a clear explanation of the requested payment.

• Review the plan's reconsidered determination for every issue and claim line.
• Confirm that an adverse or partially adverse case was forwarded to the independent review entity.
• Keep the plan case number and any IRE appeal number linked to the original claim.
• Respond promptly to a valid request for missing evidence while preserving prior delivery proof.
• Calendar any further review right from the actual IRE notice and current amount-in-controversy requirements.

8. Handle amount-only payment disputes separately

When the plan accepts coverage and pays the claim but the provider disputes only the amount, use the plan's non-contract provider payment-dispute process. Reconcile the plan's allowed amount, Original Medicare equivalent when applicable, geographic and facility adjustments, sequestration or other lawful reductions, cost sharing, prior payments, and code-level methodology. CMS maintains a provider payment-dispute page and an out-of-network payment guide, but the correct escalation depends on the plan type and dispute.

Do not use a WOL-based denied-claim appeal to obscure an amount-only disagreement. Conversely, do not accept an amount-dispute label when the remittance actually denies coverage for a service or line. Classification should follow the substance of the determination, not the name of a payer portal menu.

Provider quality-control checklist

• Medicare Advantage plan and dates of enrollment verified.
• Non-contract status confirmed for the service and date.
• Denied claim distinguished from amount-only underpayment and contractual dispute.
• Remittance-notification date and 65-calendar-day filing target documented.
• Patient account reviewed and held harmless consistent with the WOL.
• Signed WOL matches the enrollee, provider, claim, and dates of service.
• Claim, remittance, notice, clinical records, authorization evidence, and coding support indexed.
• Appeal answers each stated denial reason and requests a specific disposition.
• Plan destination and delivery confirmation preserved.
• Sixty-day payment-reconsideration period tracked from plan receipt.
• Adverse plan decision and automatic IRE transfer verified.

Related Millennova Legal resources

Accurate authority and record collection begin at intake. Review Millennova Legal's patient and client intake support, the HIPAA authorization and reimbursement-dispute documentation guide, and the ERISA health claim appeal workflow. For a different federal out-of-network payment pathway, see the No Surprises Act open-negotiation guide.

Federal primary sources