M78 Remark Code (Deactivated)

M78 is a retired remittance advice remark code. Payers stopped using it on 05/18/2006.

Seeing M78 on a Remittance?

M78 was retired effective 05/18/2006 and should not appear on new remittances.
Official retirement note: (Modified 2/28/03,) Consider using Reason Code 4
If M78 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.