Note 1: Ignore intraluminal extension to adjacent segment(s) of colon/rectum or to the ileum from the cecum; codedepth of invasion or extracolonic spread as indicated.
Note 2: A tumor nodule in the pericolic adipose tissue of a primary carcinoma without histologic evidence of residual lymph node in the nodule is classified as a regional lymph node metastasis if the nodule has the form and smooth contour of a lymph node, or if the contour is not described. If the nodule has an irregular contour, it should be coded in CS Extension as code 45.
Note 3: Codes 60-80 are used for contiguous extension from the site of origin. Discontinuous involvement is coded in CS Mets at DX.
Code | Description | TNM | SS77 | SS2000 |
---|---|---|---|---|
00 | In situ; noninvasive; intraepithelial | Tis | IS | IS |
05 | (Adeno)carcinoma in a polyp or adenoma, noninvasive | Tis | IS | IS |
10 | Invasive tumor confined to mucosa, NOS (including intramucosal, NOS) | T1 | L | L |
11 | Lamina propria, including lamina propria in the stalk of a polyp | T1 | L | L |
12 | Muscularis mucosae, including muscularis mucosae in the stalk of a polyp | T1 | L | L |
13 | Confined to head of polyp, NOS | T1 | L | L |
14 | Confined to stalk of polyp, NOS | T1 | L | L |
15 | Invasive tumor in polyp, NOS | T1 | L | L |
16 | Invades submucosa (superficial invasion), including submucosa in the stalk of a polyp | T1 | L | L |
20 | Muscularis propria invaded | T2 | L | L |
30 | Localized, NOS Confined to colon, NOS |
T1 | L | L |
40 |
|
T3 | L | L |
42 | Fat, NOS | T3 | RE | RE |
45 | Extension to:
|
T3 | RE | RE |
46 | Adherent to other organs or structures, but no microscopic tumor found in adhesion(s) | T3 | RE | RE |
50 | Invasion of/through serosa (mesothelium) (visceral peritoneum) | T4 | RE | RE |
55 | Any of [(42) to (45)] + (50) | T4 | RE | RE |
57 | Adherent to other organs or structures, NOS | T4 | RE | RE |
60 |
|
T4 | RE | RE |
65 | All colon sites:
|
T4 | RE | RE |
66 |
|
T4 | RE | RE |
70 | Cecum, appendix, ascending, descending and sigmoid colon:
|
T4 | D | D |
75 | All colon sites unless otherwise stated above:
|
T4 | D | D |
80 |
|
T4 | D | D |
95 | No evidence of primary tumor | T0 | U | U |
99 |
|
TX | U | U |