M33Remark Code (RARC)Deactivated
Effective 01/01/1997 · Stopped 08/01/2004

M33 Remark Code (Deactivated)

M33 is a retired remittance advice remark code. Payers stopped using it on 08/01/2004.

Seeing M33 on a Remittance?

  • M33 was retired effective 08/01/2004 and should not appear on new remittances.
  • Official retirement note: Consider using M68
  • If M33 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.