B21Denial Code (CARC)Deactivated
B21 Denial Code (Deactivated)
B21 is a retired claim adjustment reason code. Payers stopped using it on 10/16/2003.
Seeing B21 on a Remittance?
- B21 was retired effective 10/16/2003 and should not appear on new remittances.
- If B21 appears on an old ERA you are reworking, interpret it per the remittance date, then follow the current code's guidance for any corrected claim.