Instructions for Downloading the Medicare ZIP Code Files for October 2021
This instruction describes the process for updating the two Medicare ZIP Code files (ZIP5 and ZIP9) for the October 2021 quarter. This instruction also describes the revision to and the process for downloading the Calendar Year-End ZIP Code files.
Issued by: Centers for Medicare & Medicaid Services (CMS)
Issue Date: July 15, 2021
DISCLAIMER: The contents of this database lack the force and effect of law, except as authorized by law (including Medicare Advantage Rate Announcements and Advance Notices) or as specifically incorporated into a contract. The Department may not cite, use, or rely on any guidance that is not posted on the guidance repository, except to establish historical facts.