-78Return to the Operating Room for Related Procedure During the Postoperative Penod: The phsyician may need to indicate that another procedure was performed during the postoperative period of the initial procedure. When this subsequent procedure is related to the first, and requires the use of the operating room, it may be reported by adding the modifier '-78' to the related procedure, or by using the separate five digit modifier 09978. (For repeat procedures on the same day, see -76.)