Neoplasm, neoplastic: anus, anal
| Site | Malignant, Primary | Malignant, Secondary | Ca in situ | Benign | Uncertain Behavior | Unspecified Behavior |
|---|---|---|---|---|---|---|
| — | C21.0 | C78.5 | D01.3 | D12.9 | D37.8 | D49.0 |
| canal | C21.1 | C78.5 | D01.3 | D12.9 | D37.8 | D49.0 |
| cloacogenic zone | C21.2 | C78.5 | D01.3 | D12.9 | D37.8 | D49.0 |
| margin | C44.500 | C79.2 | D04.5 | D23.5 | D48.5 | D49.2 |
| overlapping lesion with rectosigmoid junction or rectum | C21.8 | — | — | — | — | — |
| skin | C44.500 | C79.2 | D04.5 | D23.5 | D48.5 | D49.2 |
| skin, basal cell carcinoma | C44.510 | — | — | — | — | — |
| skin, specified type NEC | C44.590 | — | — | — | — | — |
| skin, squamous cell carcinoma | C44.520 | — | — | — | — | — |
| sphincter | C21.1 | C78.5 | D01.3 | D12.9 | D37.8 | D49.0 |