Diagnosis Code: C21

Short Description: Malignant neoplasm of anus and anal canal

Long Description: Malignant neoplasm of anus and anal canal

The code C21 is NOT VALID for claim submission

Code Classification:

• Neoplasms (C00–D49)
  • 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: 2022 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*)

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This page was last updated on: 10/1/2023

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