| 0 |
In situ: noninvasive, intraepithelial |
| 1 |
Localized only (localized, NOS)
- Confined to gallbladder, NOS
- Lamina propria
- Mucosa, NOS
- Muscularis propria (layer)
- Submucosa (superficial invasion) |
| 2 |
Regional by direct extension only
- Ampulla of Vater
- Branch(es) of hepatic artery (right or left)
- Branch(es) of portal vein (right or left)
- Duodenum
- Extrahepatic bile duct(s)
- Liver, less than or equal to 2 cm OR distance not stated
- Omentum (greater, lesser, NOS)
- Pancreas
- Perimuscular connective tissue (peritoneal and hepatic side)
- Serosa (visceral peritoneum)
- Small intestine, NOS |
| 3 |
Regional lymph node(s) involved only
- Celiac artery
- Cystic duct (Calot's node)
- Hepatic artery
- Node of foramen of Winslow (omental) (epiploic)
- Pancreaticoduodenal
- Pericholedochal (common bile duct)
- Periduodenal
- Peripancreatic (near head of pancreas only)
- Porta hepatis (portal) (periportal) (hilar) (in hilus of liver)
- Portal vein
- Retroperitoneal, NOS
- Superior mesenteric
- Regional lymph node(s), NOS
+ Lymph node(s), NOS |
| 4 |
Regional by BOTH direct extension AND regional lymph node(s) involved
- Codes (2) + (3) |
| 7 |
Distant site(s)/lymph node(s) involved
- Distant site(s) (including further contiguous extension)
+ Abdominal wall
+ Colon
+ Cystic artery/vein
+ Diaphragm
+ Hepatic artery (common, NOS)
+ Liver, greater than 2 cm
+ Portal vein (main, NOS)
+ Stomach
+ Two or more extrahepatic organs or structures
- Distant lymph node(s), NOS
+ Para-aortic
+ Pericaval
+ Peripancreatic (along body and tail of pancreas only)
- Distant metastasis, NOS
+ Carcinomatosis
+ Distant metastasis WITH or WITHOUT distant lymph node(s) |
| 9 |
Unknown if extension or metastasis |
