C21 MALIGNANT NEOPLASM OF ANUS AND ANAL CANAL

Code Information

Diagnosis Code: C21

Short Description: Malignant neoplasm of anus and anal canal

Long Description: Malignant neoplasm of anus and anal canal

Code Classification:

  • Neoplasms (C00–D48)
    • Malignant neoplasms of digestive organs (C15-C26)
      • Malignant neoplasm of anus and anal canal (C21)
        • C21 Malignant neoplasm of anus and anal canal

Code Version: 2017 ICD-10-CM

References to Index of Diseases and Injuries

The code C21 has the following ICD-10-CM references to the Index of Diseases and Injuries
  • Type 2 Excludes Notes:
    • 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)

Similar Codes

No. ICD-10 Code ICD-10 Description
1 C21.0 Malignant neoplasm of anus, unspecified
2 C21.1 Malignant neoplasm of anal canal
3 C21.2 Malignant neoplasm of cloacogenic zone
4 C21.8 Malignant neoplasm of overlapping sites of rectum, anus and anal canal



This page was last updated on: 1/1/2018