Abdominal procedure, by open, laparoscopic or robot‑assisted approach, if the service: (a) is for the removal of graft material: (i) in symptomatic patients with graft related complications (including graft related pain or discharge and bleeding related to graft exposure); or (ii) where the graft has penetrated adjacent organs such as the bladder (including urethra) or bowel; and (b) if required—includes retroperitoneal dissection, and mobilisation, of either or both of the bladder and bowel; other than a service associated with a service to which item 35581 or 35582 applies (Anaes.) (Assist.)