C21

Malignant neoplasm of anus and anal canal

Inclusion Terms

None inclusion terms specified for this code.

Code First

None code first specified for this code.

Use Additional Code

None use additional code specified for this code.

Cannot Code Together

These codes cannot be used together with the current code, even if both conditions are present.

None specified for this code.

Can Code Together

These codes can be used together with the current code if both conditions are documented.

  • • malignant carcinoid tumors of the colon (C7A.02-)
  • • malignant melanoma of anal margin (C43.51)
  • • malignant melanoma of anal skin (C43.51)
  • • malignant melanoma of perianal skin (C43.51)
  • • other and unspecified malignant neoplasm of anal margin (C44.500, C44.510, C44.520, C44.590)
  • • other and unspecified malignant neoplasm of anal skin (C44.500, C44.510, C44.520, C44.590)
  • • other and unspecified malignant neoplasm of perianal skin (C44.500, C44.510, C44.520, C44.590)