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Stack of Claims applications on a desk.
November 5, 2019

Will your Medicare claims be paid in 2020? Not without MBIs

Starting Jan. 1, 2020, if you want to get paid by Medicare you must use the new Medicare Beneficiary Identifier (MBI) when billing Medicare regardless of the date of service.
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Claims submitted without MBIs will be rejected, with some exceptions. The MBI replaces the social security number-based Health Insurance Claim Numbers (HICNs) from Medicare cards and is now used for Medicare transactions like billing, eligibility status and claim status.

  • Ask your patients for their card. If they did not get a new card, give them the Get Your New Medicare Card flyer in English or Spanish.
  • Use your Medicare Administrative Contractor’s look-up tool. Sign up for the Portal to use the tool.
  • Check the remittance advice. Medicare returns the MBI on the remittance advice for every claim with a valid and active HICN.


For more information, see the MLN Matters article.

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