New Medicare Card Transition Ends Next Week: Claim Reject Codes Beginning January 1
If you want to get paid you should be reporting MBIs on all of your Medicare claims. The deadline is here: if you are not using Medicare Beneficiary Identifiers (MBIs) on claims (with a few exceptions) after January 1, regardless of the date of service, here are the denials you will receive:
Electronic claims reject codes: Claims Status Category Code of A7 (acknowledgment rejected for invalid information), a Claims Status Code of 164 (entity’s contract/member number), and an Entity Code of IL (subscriber)
Paper claims notices: Claim Adjustment Reason Code (CARC) 16 “Claim/service lacks information or has submission/billing error(s)” and Remittance Advice Remark Code (RARC) N382 “Missing/incomplete/invalid patient identifier”
Read more about it here, MLN SE18006 New Medicare Beneficiary Identifier (MBI) Get It, Use It


Christine Taxin
36 Abington Avenue
Ardsley New York 10502
United States of America