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ICD-10-CM Current in FY 2027

C21.8

Malignant neoplasm of overlapping sites of rectum, anus and anal canal

Release
FY 2027
Effective
Official source (opens in a new tab)

Hierarchy

Where C21.8 sits in the official hierarchy. Each level is the code it is classified under.

  1. C21 Parent Malignant neoplasm of anus and anal canal
  2. C21.8 This code Malignant neoplasm of overlapping sites of rectum, anus and anal canal

Official Coding Notes

Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.

Inclusion Terms

Malignant neoplasm of anorectal junction

Inclusion Terms

Malignant neoplasm of anorectum

Inclusion Terms

Primary malignant neoplasm of two or more contiguous sites of rectum, anus and anal canal

Excludes2

malignant carcinoid tumors of the colon ( C7A.02- )

Inherited from C21 — Malignant neoplasm of anus and anal canal

Excludes2

malignant melanoma of anal margin ( C43.51 )

Inherited from C21 — Malignant neoplasm of anus and anal canal

Excludes2

malignant melanoma of anal skin ( C43.51 )

Inherited from C21 — Malignant neoplasm of anus and anal canal

Excludes2

malignant melanoma of perianal skin ( C43.51 )

Inherited from C21 — Malignant neoplasm of anus and anal canal

Excludes2

other and unspecified malignant neoplasm of anal margin ( C44.500 , C44.510 , C44.520 , C44.590 )

Inherited from C21 — Malignant neoplasm of anus and anal canal

Excludes2

other and unspecified malignant neoplasm of anal skin ( C44.500 , C44.510 , C44.520 , C44.590 )

Inherited from C21 — Malignant neoplasm of anus and anal canal

Excludes2

other and unspecified malignant neoplasm of perianal skin ( C44.500 , C44.510 , C44.520 , C44.590 )

Inherited from C21 — Malignant neoplasm of anus and anal canal

Version History

How C21.8 appears in each release imported from the official files, newest first.

  1. FY 2027 Effective

    Current

    Malignant neoplasm of overlapping sites of rectum, anus and anal canal

  2. FY 2026 Effective

    Unchanged

    Malignant neoplasm of overlapping sites of rectum, anus and anal canal

Related Codes

Other codes under C21

Data Source

Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.

Release
FY 2027
Effective
Source file
icd10cm-code-descriptions-2027.zip

Official ICD-10-CM source files (opens in a new tab)

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