Hi have a scenario to code and bill in which many procedures are done in single surgery so I am confused need help.
PREOPERATIVE DIAGNOSIS: COLOVESICAL FISTULA DIVERTICULITIS RECURRENCE

POST OPERATIVE DIAGNOSIS : FOR FROZEN ABDOMEN AND PELVIS WITH EXTENSIVE PELVIC INTRA ABDOMINAL AND ANTERIOR ABDOMINAL ADHESIONS WITH RECTOVESICAL FISTULA.

PROCEDURE : Exploratory laparotomy extensive lysis of adhesions approximately 3-1/2 hrs closure of small bowel enterotomyx4, right hemicolectomy with primary side to side anastomosis , takedown of recto vesical fistula, proctoscopyx4 , low anterior colectomy with mobilization of splenic flexure and primary anastomosis, diverting loop ileostomy, pelvic drain placement.