This is what CaseWhy Appeals writes for a case like this one; your letter uses your facts and your notice's rule.
September 27, 2026
Social Security Administration — c/o your local field office
RE: Requesting reconsideration of the Medicare application, entitlement, or enrollment determination described below under 20 CFR § 404.909 — Frances Sample, plan member ID ••••DEMO, denial dated 2026-07-05, Medicare application denied or delayed
On 2026-07-05, Social Security denied the item or service described below. The stated reason was: "We are unable to approve your application because the requested documentation was not received."
I am appealing the denial of the Medicare enrollment application on the grounds that Social Security failed to comply with its own procedural requirements for initial determinations. Under 42 CFR § 405.904, SSA is required to make an initial determination on an application for Medicare benefits, and a beneficiary who is dissatisfied with that determination may request reconsideration in accordance with applicable regulations. However, SSA's assertion that it never received requested documents does not constitute a valid initial determination on the merits of the application itself. The regulation establishes a clear appellate process that presumes SSA has made a substantive determination; a mere claim of non-receipt of documents, without evidence of proper notice and opportunity to cure, falls short of the procedural requirements that must precede any denial.
Furthermore, 42 CFR § 406.27 establishes that SSA must recognize special enrollment periods for individuals who missed Medicare enrollment deadlines due to exceptional conditions, including emergencies, disasters, employer misrepresentation, and other circumstances beyond an individual's control. The regulation requires that individuals be afforded the opportunity to demonstrate their eligibility and circumstances through documentation or written attestation. SSA's denial based solely on alleged non-receipt of documents, without providing clear written notice of what specific documents were requested, when they were requested, and a reasonable deadline for submission, does not satisfy the procedural safeguards embedded in 42 CFR § 406.27. The regulation contemplates that individuals will have the opportunity to respond to requests for information.
I am requesting that this matter be escalated for review under 42 CFR § 405.1100, which provides that any party may request Council review of an initial determination. The Council undertakes de novo review and must issue a final decision within 90 calendar days of receipt of the request for review. SSA's procedural failure to properly document its request for information, provide adequate notice, and allow reasonable opportunity for response constitutes grounds for reversal of the denial and remand for proper processing of the Medicare enrollment application.
The facts as I understand them:
The notice states a specific reason for the denial or delay.
Social Security asked for information or documents that were never actually provided, or that were provided but not credited.
I filed the application within the correct enrollment period and I can show when I actually filed it.
No one else has contacted Social Security about this application, or if they did, they did not get a different or inconsistent answer.
Requesting reconsideration of the Medicare application, entitlement, or enrollment determination described below under 20 CFR § 404.909
Signed by the enrollee.