I checked the history of M16 and apparently some carriers were not supplying further details on what was missing. So effective 4/1/07, at least ONE other advice code is required. Check box 32 for all types of claims, check hospital data if inpatient (date of admission, place of service, etc.), check referring physician if one is required (or "none" or "self-referred" if one is not required), check that the group field is populated with the word "NONE" (my carrier LOVES to deny for that one).

Sharon