Zip Code List To CMS Locality Information
The following information appeared on CMS.gov
CMS produces a “Zip Code to Carrier Locality File” that is available for download from the CMS Fee Schedules – General Information
website. The user can map specific zip codes to the correct Medicare Administrative Contractor.Lifetime benefit allowances can be verified
through the member’s previous carrier. For each zip code, the file will include carrier numbers, locality numbers, and state codes.
The file will also include an indicator for urban, rural or a low density (qualified) area.The CMS website only maintains the most
recent version of the file.
To read more, visit CMS.gov