Surgical Procedure Primary Site: Colon, Rectosigmoid, Rectum
Code 80: Colectomy, NOS; Proctectomy,
Code 90: Surgery, NOS
Code 99: Unknown
For colon, rectosigmoid, or rectum, assign code 80 if colectomy or proctectomy was performed, but the procedure is not described in codes 30 through 70. If another procedure is performed to the colon, rectosigmoid, or rectum and it is not described in any of the other codes for the data item, surgical procedure of primary site, assign code 90. Code 99 is assigned when it is unknown if surgery to the primary site was performed.