C21.2 MALIGNANT NEOPLASM OF CLOACOGENIC ZONE

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Code Information

Diagnosis Code: C21.2

Short Description: Malignant neoplasm of cloacogenic zone

Long Description: Malignant neoplasm of cloacogenic zone

The code C21.2 is VALID for claim submission

Code Classification:

Neoplasms (C00–D49)
- Malignant neoplasms of digestive organs (C15-C26)
  - Malignant neoplasm of anus and anal canal (C21)
    - C21.2 Malignant neoplasm of cloacogenic zone

Code Version: 2022 ICD-10-CM

Synonyms

Anal mucosa finding
Anal mucosa finding
Malignant tumor of cloacogenic zone
Primary cloacogenic carcinoma of anal canal
Primary malignant neoplasm of anal canal
Primary malignant neoplasm of anal canal
Primary malignant neoplasm of cloacogenic zone

Diagnostic Related Group(s)

The code C21.2 is grouped in the following Diagnostic Related Group(s) (MS-DRG v39.0)

Digestive Malignancy With Mcc (374)
Digestive Malignancy With Cc (375)
Digestive Malignancy Without Cc/mcc (376)

Crosswalk Information

ICD-10 Code		ICD-9 Code	ICD-9 Description
C21.2		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
C21.8	Malignant neoplasm of overlapping sites of rectum, anus and anal canal

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

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