Table 2. Clinical codes relating to colorectal cancer from NCRAS.
| ICD-10 code | Term |
|---|---|
| C18 | Malignant neoplasm of colon |
| C18.0 | Caecum (incl.: Ileocaecal valve) |
| C18.1 | Appendix |
| C18.2 | Ascending colon |
| C18.3 | Hepatic flexure |
| C18.4 | Transverse colon |
| C18.5 | Splenic flexure |
| C18.6 | Descending colon |
| C18.7 | Sigmoid colon (Incl.: Sigmoid (flexure); Excl.: rectosigmoid junction (C19)) |
| C18.8 | Overlapping lesion of colon |
| C18.9 | Colon, unspecified (Incl.: Large intestine NOS) |
| C19 | Malignant neoplasm of rectosigmoid junction (Incl.: Colon with rectum, Rectosigmoid (colon)) |
| C20 | Malignant neoplasm of rectum (Incl.: Rectal ampulla) |
| C21 | Malignant neoplasm of anus and anal canal |
| C21.0 | Anus, unspecified (Excl.: anal: margin (C43.5, C44.5), skin (C43.5, C44.5) perianal skin (C43.5, C44.5)) |
| C21.1 | Anal canal (Incl.: Anal sphincter) |
| C21.2 | Cloacogenic zone |
| C21.8 | Overlapping lesion of rectum, anus and anal canal (Incl.: Anorectal junction, Anorectum, and Malignant neoplasm of
rectum, anus and anal canal whose point of origin cannot be classified to any one of the categories C20-C21.2) |