| 0 |
In situ, intraepithelial, noninvasive
- (Adeno)carcinoma, noninvasive, in a polyp |
| 1 |
Localized only (localized, NOS)
- Confined to stomach, NOS
- Extension through wall, NOS
- Implants within stomach
- Intraluminal spread to esophagus or duodenum
- Invasion of
+ Intramucosa, NOS
+ Lamina propria
+ Mucosa, NOS
+ Muscularis mucosae
+ Muscularis, NOS
+ Muscularis propria
+ Submucosa (superficial, NOS)
- Linitis plastica (diffuse involvement of the entire stomach wall)
- Perimuscular tissue invaded
- Polyp (head, stalk, NOS)
- Subserosal tissue/(sub)serosal fat |
| 2 |
Regional by direct extension only
- Adjacent (connective) tissue, NOS
- Colon/mesocolon (including transverse and flexures)
- Diaphragm
- Duodenum (via serosa)
- Esophagus (via serosa)
- Gastric artery
- Ileum
- Jejunum
- Ligaments
+ Gastrocolic
+ Gastrohepatic
+ Gastrosplenic
- Liver
- Mesothelium
- Omentum (greater, lesser, NOS)
- Pancreas
- Perigastric fat
- Serosa
- Small intestine, NOS
- Spleen
- Tunica serosa
- Visceral peritoneum |
| 3 |
Regional lymph node(s) involved only
- Celiac artery
- Common hepatic artery
- Hepatic, NOS
- Left gastric (superior gastric), NOS
+ Cardial, NOS
+ Cardioesophageal
+ Gastric artery
+ Gastric, left
+ Gastrohepatic
+ Gastropancreatic, left
+ Lesser curvature
+ Lesser omentum
+ Paracardial
- Pancreaticosplenic (pancreaticolineal)
- Perigastric, NOS
- Peripancreatic
- Pyloric, NOS
+ Infrapyloric (subpyloric)
+ Suprapyloric
- Right gastric (inferior gastric, NOS)
+ Gastrocolic
+ Gastroduodenal
+ Gastroepiploic (gastro-omental), right or NOS
+ Gastrohepatic
+ Greater curvature
+ Greater omentum
+ Pancreaticoduodenal
- Splenic (lineal), NOS
+ Gastroepiploic (gastro-omental), left
+ Splenic hilar/hilum
- Nodule(s) in perigastric fat
- 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
+ Adrenal (suprarenal) gland
+ Aorta
+ Celiac axis
+ Kidney
+ Retroperitoneum
- Distant lymph node(s), NOS
+ Hepatoduodenal (along the proper hepatic artery, including portal)
+ Intra-abdominal
+ Mesenteric (inferior, superior, NOS)
+ Middle colic
+ Pancreaticoduodenal (all subsites EXCEPT greater curvature)
+ Para-aortic
+ Porta hepatic (portal) (hilar) (in hilus of liver)
+ Retropancreatic
+ Retroperitoneal
- Distant metastasis, NOS
+ Carcinomatosis
+ Krukenberg tumor (metastasis to ovary(ies))
+ Malignant (positive) peritoneal cytology
+ Distant metastasis WITH or WITHOUT distant lymph node(s) |
| 9 |
Unknown if extension or metastasis |
