US · guidance
CMS Pub. 100-04, ch. 29, § 310.8
Medicare Redetermination Notice (for Fully Favorable
Redeterminations)
(Rev. 4380, Issued: 08-30-19, Effective: 07-08-19, Implementation: 10- 01-19)
NOTE: This activity is NOT required until further notice, unless otherwise specified in the MAC’s statement
of work, except in those situations when the parties will not receive notice of effectuation via a MSN or RA
(MSP overpayments, non-MSP overpayments which do not result in a refund or payment, etc.). MACs will also
have to modify the language to ensure that the letter appropriately addresses the MSP overpayment or non-
overpayment situations.
The MAC uses the redetermination format below, (or something similar) and standard language paragraphs
whether the redetermination notice is delivered via hard copy mail or via a CMS-approved portal/application.
The MAC must ensure that the information identified in each section of the model letter below is included and
addressed, as needed, in the MRN.
(Start)
EXHIBIT 5:
MONTH, DATE, YEAR
APPELLANT NAME MEDICARE NUMBER OF
ADDRESS BENEFICIARY:
CITY, STATE ZIP
CONTACT INFORMATION:
If you have questions, write or
call:
MAC Name
Address
City, State Zip
Telephone number
MEDICARE APPEAL DECISION
RE: <Include claim identifier or appeal number>
Dear <Appellant’s Name>:
This letter is to inform you of the decision on your Medicare appeal. This appeal decision is fully favorable to
you. Our decision is that your claim is covered by Medicare. More information on this decision, including the
amount Medicare will pay, will follow in a future Remittance Advice or Medicare Summary Notice.
For information about filing a request for redetermination, please visit www.medicare.gov/appeals or
http://www.cms.gov/OrgMedFFSAppeals/. Medicare beneficiaries may also contact your State health
insurance assistance program (SHIP). You can find the phone number for your SHIP in your “Medicare &
You” handbook, under the “Helpful Contacts” section of www.medicare.gov Web site, or by calling 1-800-
MEDICARE (1-800-633-4227).
Sincerely,
NAME, TITLE
Model Fully Favorable Redetermination
Notice Coverage Decision
MAC NAME
(End) Exhibit 5
History
(Rev. 4380, Issued: 08-30-19, Effective: 07-08-19, Implementation: 10- 01-19)
Provenance
- Source
- cms.gov
- Retrieved
- 2026-08-25
- Edition
- iom-2026-08-25
- Content hash
400e2f519d46e2b703dcbd630e0bf6834ebbae5470655ca8538d7d36d9b2f337
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