Last call: Get ready as new Medicare cards, MBIs become mandatory on Jan. 1

Why This Topic Matters

Providers and billing teams need to know when the old Medicare card information stops being accepted for routine fee-for-service claims and which related workflows may still encounter older identifiers. The article helps organizations prepare for the cutoff and avoid claim rejections or workflow disruptions.

Article Sections

1. CMS transition update and timing

   Overview of the Medicare identifier transition period, CMS communication on beneficiary card distribution, and the approaching cutoff date for routine claims processing.

2. Claims, communications, and remaining legacy uses

   Discussion of where newer Medicare identifiers are expected to appear in provider workflows and the limited areas where older identifiers may still be encountered in Medicare-related processes.

3. Provider tools, beneficiary resources, and handling of old numbers

   Information about CMS support tools, beneficiary self-service resources, and general handling of older patient information in a compliant manner.

4. Additional reminders for Medicare Advantage and identifier formatting

   General reminders for Medicare Advantage beneficiaries and a brief note about distinguishing characters in the new identifiers.