Diagnosis Code

C21.8 MALIG NEOPLASM OF OVRLP SITES OF RECTUM, ANUS AND ANAL CANAL

Code Information

Diagnosis Code: C21.8

Short Description: Malig neoplasm of ovrlp sites of rectum, anus and anal canal

Long Description: Malignant neoplasm of overlapping sites of rectum, anus and anal canal

The code C21.8 is VALID for claim submission

Code Classification:

  • Neoplasms (C00–D48)
    • Malignant neoplasms of digestive organs (C15-C26)
      • Malignant neoplasm of anus and anal canal (C21)
        • C21.8 Malig neoplasm of ovrlp sites of rectum, anus and anal canal

Code Version: 2018 ICD-10-CM

Synonyms

  • Adenocarcinoma of anorectum
  • Malignant neoplasm of anorectum
  • Malignant tumor of anal canal
  • Malignant tumor of anorectal junction
  • Neoplasm of anal canal
  • Overlapping malignant neoplasm of gastrointestinal tract
  • Overlapping malignant neoplasm of rectum, anus and anal canal
  • Primary malignant neoplasm of anal canal
  • Primary malignant neoplasm of anus
  • Primary malignant neoplasm of rectum

Diagnostic Related Group(s)

The code C21.8 is grouped in the following Diagnostic Related Group(s) (MS-DRG v34.0)
  • Digestive Malignancy With Mcc (374)
  • Digestive Malignancy With Cc (375)
  • Digestive Malignancy Without Cc/mcc (376)

References to Index of Diseases and Injuries

The code C21.8 has the following ICD-10-CM references to the Index of Diseases and Injuries
  • Inclusion Terms:
    • Malignant neoplasm of anorectal junction
    • Malignant neoplasm of anorectum
    • Primary malignant neoplasm of two or more contiguous sites of rectum, anus and anal canal

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
C21.8 Right Arrow 154.8 Mal neo rectum/anus NEC
This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code ICD-10 Description
C21 Malignant neoplasm of anus and anal canal
C21.0 Malignant neoplasm of anus, unspecified
C21.1 Malignant neoplasm of anal canal
C21.2 Malignant neoplasm of cloacogenic zone

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