Collaborative Stage

Note: Since there is no serosa on the gallbladder on the side attached to the liver, a simple cholecystectomy may not completely remove a T2 tumor, even though such tumors are considered to be confined to the gallbladder. An important anatomic consideration is that the serosa along the liver edge is more densely adherent to the liver (cystic plate) and much of this is often left behind at time of cholecystectomy. For this reason, partial hepatic resection incorporating portions of segments IVb and V is advocated for some cases.

Code	Description
010	Partial hepatectomy (one or more liver segments)
020	Wedge resection
030	Right or left hepatectomy (formal lobectomy)
040	Extended hepatectomy (right or left trisectionectomy or trisegmentectomy)
050	Liver resection NOS
988	Not applicable: Information not collected for this case
998	No resection of liver
999	Unknown or no information Not documented in patient record

CS Site-Specific Factor 15
Extent of Liver Resection