The Centers for Medicare and Medicaid Services recently issued an MLN Matters Article, New MBI: Get It, Use It, that includes helpful FYIs about the new Medicare cards, such as:

  • Why I should use the MBI now
  • Starting Jan. 1, 2020, even for services provided before this date, you must use MBIs
  • It is 0 not O
  • What to do if an MBI changes
What will happen starting Jan. 1, 2020, if you do not use MBIs regardless of the date of service:
  • Claims will be rejected, with a few exceptions
  • Eligibility inquiries and transactions will be rejected  
Obtain your patient’s MBI by:
  • Asking your patients for their cards
  • Using the MBI Lookup tool in Novitasphere, Novitas' free, secure internet portal
  • Check the remittance advice. The MBI is returned on the remittance advice for every claim with a valid and active HICN
Start using the MBI now in your Medicare billing.


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