Collaborative Stage for TNM 7 - Revised 12/14/2009 [ Schema ]
| Code | Description | TNM 7 Map | TNM 6 Map | SS77 Map | SS2000 Map |
| 000 | In situ; noninvasive; intraepithelial | Tis | Tis | IS | IS |
| 050 | (Adeno)carcinoma in a polyp, noninvasive | Tis | Tis | IS | IS |
| 100 | Invasive tumor confined to mucosa, NOS (including intramucosal, NOS) | T1a | T1 | L | L |
| 110 | Invades lamina propria | T1a | T1 | L | L |
| 120 | Invades muscularis mucosae | T1a | T1 | L | L |
| 125 | Stated as T1a, NOS | T1a | T1 | L | L |
| 130 | Confined to head of polyp Extension to stalk | T1b | T1 | L | L |
| 140 | Confined to stalk of polyp | T1b | T1 | L | L |
| 150 | Tumor in polyp, NOS | T1NOS | T1 | L | L |
| 160 | Invades submucosa (superficial invasion) | T1b | T1 | L | L |
| 170 | Stated as T1b, NOS | T1b | T1 | L | L |
| 200 | Invades into but not through muscularis propria | T2 | T2a | L | L |
| 300 | Localized, NOS Implants inside stomach | T1NOS | T1 | L | L |
| 340 | Stated as T1, NOS | T1NOS | T1 | L | L |
| 350 | Linitis plastica (see Note 2) and no other information regarding extension is available. | T2 | T2a | RE | L |
| 390 | Stated as T2, NOS | T2 | T2NOS | L | L |
| 400 | Invasion through muscularis propria or muscularis, NOS Extension through wall, NOS Perimuscular tissue invaded Subserosal tissue/(sub)serosal fat invaded | T3 | T2b | L | L |
| 450 | Extension to adjacent (connective) tissue WITHOUT perforation of visceral peritoneum: Gastric artery Ligaments: Gastrocolic Gastrohepatic Gastrosplenic Omentum, NOS Greater Lesser Perigastric fat | T3 | T2b | RE | RE |
| 480 | Stated as T3, NOS | T3 | T3 | RE | RE |
| 490 | Stated as T4, NOS | T4NOS | T4 | RE | RE |
| 500 | Invasion of/through serosa (mesothelium) (tunica serosa) (visceral peritoneum), including perforation of visceral peritoneum covering the gastric ligaments or the omentum WITHOUT invasion of adjacent structures Stated as T4a, NOS | T4a | T3 | RE | RE |
| 550 | (450) + (500) | T4a | T3 | RE | RE |
| 600 | Diaphragm Duodenum via serosa or NOS Esophagus via serosa Ileum Jejunum Liver Pancreas Small intestine, NOS Spleen Transverse colon/mesocolon (including flexures) Celiacaxis Aorta | T4b | T4 | RE | RE |
| 690 | Stated as T4b, NOS | T4b | T4 | RE | RE |
| 700 | Abdominal wall Adrenal gland Kidney Retroperitoneum | T4b | T4 | D | D |
| 800 | Further contiguous extension | T4b | T4 | D | D |
| 950 | No evidence of primary tumor | T0 | T0 | U | U |
| 999 | Unknown extension Primary tumor cannot be assessed Not documented in patient record | TX | TX | U | U |