Note 1: INTRALUMINAL or INTRAMURAL extension to esophagus and duodenum is classified by the depth of greatest invasion in any of these sites, including stomach. (For extension to esophagus or duodenum via serosa, see code 60.)
Note 2: If the diagnosis states "linitis plastica" and no other information regarding extension is available, use code 35.
Code | Description | TNM | SS77 | SS2000 |
---|---|---|---|---|
00 | In situ; noninvasive; intraepithelial | Tis | IS | IS |
05 | (Adeno)carcinoma in a polyp, noninvasive | Tis | IS | IS |
10 | Invasive tumor confined to mucosa, NOS (including intramucosal, NOS) | T1 | L | L |
11 | Invades lamina propria | T1 | L | L |
12 | Invades muscularis mucosae | T1 | L | L |
13 |
|
T1 | L | L |
14 | Confined to stalk of polyp | T1 | L | L |
15 | Tumor in polyp, NOS | T1 | L | L |
16 | Invades submucosa (superficial invasion) | T1 | L | L |
20 | Invades into but not through muscularis propria | T2a | L | L |
30 |
|
T1 | L | L |
35 | Linitis plastica (see Note 2) and no other information regarding extension is available. | T2a | RE | L |
40 |
|
T2b | L | L |
45 | Extension to adjacent (connective) tissue without perforation of visceral peritoneum:
|
T2b | RE | RE |
50 | 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 | T3 | RE | RE |
55 | (45) + (50) | T3 | RE | RE |
60 |
|
T4 | RE | RE |
70 |
|
T4 | D | D |
80 | Further contiguous extension |
T4 | D | D |
95 | No evidence of primary tumor | T0 | U | U |
99 |
|
TX | U | U |