Medicare Advantage: grievance or coverage appeal?

Operations or conduct concern: grievance

Enrollee dissatisfaction with a Medicare health plan’s operations, activities or behavior other than an organization determination, such as appointment-access or staff-conduct concerns. Not an appeal seeking reversal of a benefit/coverage denial, an independent provider reimbursement dispute, Part D grievance or hospital discharge appeal. Clinical quality-of-care findings and special expedited handling are not determined here.

Source verification required. Filing window and channel are withheld because this source changed, expired or is unavailable.

Official CMS source — Grievances — definition, event-based filing window and verbal/written channels · checked 2026-10-15

Source does not establish a universal effective date; current guidance checked, not historical reconstruction

Adverse organization determination: reconsideration

Enrollee-side appeal of a Medicare Advantage adverse organization determination for an item or service; a physician may act as the official source permits. Not an independent provider reimbursement/contract dispute, an Original Medicare MAC appeal, Part D drug appeal, grievance, hospital discharge appeal or IRE filing. Expedited clinical qualification and a late-filing extension are not determined here.

Source verification required. Filing window and channel are withheld because this source changed, expired or is unavailable.

Official CMS source — CMS public summary: 65-day notice-date description; read with receipt-qualified 422.582 · checked 2026-10-15

CMS summary read together with the October15,2026 regulatory snapshot. Contrary receipt evidence, actual notice and late-filing assessment remain separate; source review required by October22,2026. No historical rule reconstruction.

Regulatory source — 42 CFR 422.582, dated2026-10-15: receipt-qualified filing, rebuttable5day presumption and request-received event · checked 2026-10-18