Note 1: Ignore intraluminal or lateral extension to adjacent segment(s) of small intestine and code depth of invasion or spread outside the small intestine as indicated.
Note 2: The nonperitonealized perimuscular tissue is, for jejunum and ileum, part of the mesentery and, for
duodenum in areas where serosa is lacking, part of the retroperitoneum.
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 | Confined to head of polyp | T1 | L | L |
14 | Confined to stalk of polyp | T1 | L | L |
15 | Invasion of polyp, NOS | T1 | L | L |
16 | Invades submucosa (superficial invasion) | T1 | L | L |
20 | Muscularis propria invaded | T2 | L | L |
30 |
|
T1 | L | L |
40 |
|
T3 | L | L |
42 | Fat, NOS | T3 | RE | RE |
45 |
|
T3 | RE | RE |
50 | Invasion of/through serosa (mesothelium) (tunica serosa) (visceral peritoneum) | T4 | L | RE |
55 | (50) + [(42) or (45)] | T4 | RE | RE |
60 | For duodenum primary only:
|
T4 | RE | RE |
65 |
|
T4 | RE | RE |
66 | For duodenum primary only:
|
T4 | RE | RE |
67 | For all small intestine sites:
|
T4 | RE | RE |
68 | For all small intestine sites:
|
T4 | RE | RE |
70 | For jejunum or ileum primary only:
|
T4 | D | D |
80 | Further contiguous extension | T4 | D | D |
95 | No evidence of primary tumor | T0 | U | U |
99 |
|
TX | U | U |