Medicare Part D reconsideration fax (IRE)
Where to fax a Request for Reconsideration of Medicare Prescription Drug Denial to the Part D Independent Review Entity (IRE).
Verified October 22, 2026Checked against CMS model form: Request for Reconsideration of Medicare Prescription Drug Denial (Eff 01/01/25, ZIP with PDF).
| Who uses it | Office | Fax |
|---|---|---|
| Standard Part D reconsideration requests | Part D IRE (C2C), standard appeals | (833) 710-0580 |
| Expedited (fast) Part D reconsideration requests | Part D IRE (C2C), expedited appeals | (833) 710-0579 |
Before you fax
- CMS says the request must be filed within 65 calendar days of the plan's redetermination notice and must be in writing, which includes fax.
- The fax numbers are printed on CMS's model form, which CMS publishes as a ZIP download on its Part D appeals forms page.
- Part D IRE portalCMS lists the IRE portal and mail addresses on its reconsideration page.
- CMS: Reconsideration by the Part D Independent Review EntityHow to request a reconsideration, the deadline and the IRE's mail addresses.