New Medicare Beneficiary Identifier (MBI) Get It, Use It - Revised

MLN Matters Number: SE18006 Revised
Article Release Date: March 19, 2020

Note: CMS revised the article on March 19, 2020, to clarify that you need the beneficiary's first name, last name, date of birth, and SSN to use MBI look-up tool. All other information remains the same.

Use MBIs for all Medicare transactions. The Centers for Medicare & Medicaid Services (CMS) replaced the Social Security Number (SSN)-based Health Insurance Claim Numbers (HICNs) with the MBI and mailed new Medicare cards to all Medicare beneficiaries. The cards with MBIs offer better identity protection.

View the complete CMS Medicare Learning Network (MLN) Matters Special Edition (SE)18006.

Last Updated Mar 20, 2020