| 0 |
In situ, intraepithelial, noninvasive |
| 1 |
Localized only (localized, NOS)
- Confined to bile duct, NOS
- Lamina propria
- Mucosa, NOS
- Muscularis propria
- Submucosa (superficial invasion) |
| 2 |
Regional by direct extension only
- Ampulla of Vater
- Beyond wall of bile duct
- Duodenum
- Gallbladder
+ Unilateral branches of the right or left hepatic artery OR portal vein
- Invasion of/through serosa
- Liver, less than or equal to 2 cm or UNKNOWN
- Omentum (greater or lesser)
- Pancreas
- Perimuscular connective tissue
- Small intestine |
| 3 |
Regional lymph node(s) involved only
- Celiac
- Cystic duct (node of Calot)
- Node of foramen of Winslow (epiploic) (omental)
- Pancreaticoduodenal
- Pericholedochal (common bile duct)
- Periduodenal
- Peripancreatic (near head of pancreas only)
- Porta hepatis (portal) (periportal) (hilar)
- 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
+ Common hepatic artery
+ Cystic artery/vein
+ Hepatic artery, NOS
+ Liver greater than 2 cm
+ Portal vein or its branches bilaterally
+ Portal vein, NOS
+ Stomach
- Distant lymph node(s), NOS
+ Para-aortic
+ 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 |
