Tips for Using New CMS Medicare Beneficiary Identifier

Published: 07/25/2019

  • Centers for Medicare and Medicaid Services
Relevant To:
  • All Healthcare Organizations

The Centers for Medicare and Medicaid Services (CMS) MLN Matter Article, New MBI: Get It. Use It offers helpful information for understanding and incorporating use of the new Medicare Beneficiary Identifier (MBI). Some tips in the article include:

  • The Medicare Beneficiary Identifier (MBI) uses numbers 0-9 and all uppercase letters except for S, L, O, I, B, and Z. These letters were excluded to avoid confusion when differentiating some letters and numbers (e.g., between “0” and “O”).

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