C21.2
BillableMalignant neoplasm of cloacogenic zone
Malignant neoplasm of cloacogenic zone
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •gastrointestinal stromal tumorsA-)C49
- malignant carcinoid tumors of the colon (C7A.02-)
- •malignant melanoma of anal marginC43.51
- •malignant melanoma of anal skinC43.51
- •malignant melanoma of perianal skinC43.51
- •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
Related Codes(3)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(21)
SNOMED CT
- Primary malignant neoplasm of anal canal93669004
- Primary malignant neoplasm of cloacogenic zone109840002
- Anal mucosa finding249632006
- Anal mucosa observation249632006
- Malignant neoplasm of cloacogenic zone363491008
- Malignant tumor of cloacogenic zone363491008
- Malignant tumour of cloacogenic zone363491008
- Primary cloacogenic carcinoma of anal canal721709000
UMLS
Clinical Terms
- Malignant neoplasm of cloacogenic zone (disorder)
- Malignant tumor of cloacogenic zone
- Primary malignant neoplasm of anal canal
- Primary malignant neoplasm of cloacogenic zone
- Primary cloacogenic carcinoma of anal canal
- Anal mucosa observation
- Malignant tumour of cloacogenic zone
- Anal mucosa finding
Frequently Asked Questions
What is the ICD-10 code for malignant neoplasm of cloacogenic zone?
The ICD-10-CM code for malignant neoplasm of cloacogenic zone is C21.2. The full clinical description is "Malignant neoplasm of cloacogenic zone". C21.2 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code C21.2 mean?
ICD-10-CM code C21.2 represents “Malignant neoplasm of cloacogenic zone”. It is classified under Chapter 2: Neoplasms and is a billable/specific code that can be used on a claim.
Is C21.2 a billable code?
Yes, C21.2 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is C21.2 in?
C21.2 is in Chapter 2: Neoplasms (codes C00-D49).
What codes cannot be used with C21.2?
C21.2 has Excludes1 notes indicating codes that cannot be used together with it, including: Kaposi's sarcoma of gastrointestinal sites (C46.4).
What SNOMED CT codes does C21.2 map to?
C21.2 maps to 5 SNOMED CT concepts: 249632006, 363491008, 721709000, 93669004, 109840002. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for C21.2?
C21.2 is linked to 1 UMLS Concept Unique Identifier: C0345886. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does C21.2 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like malignant neoplasm of cloacogenic zone affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of C21.2?
C21.2 maps to the ICD-11 code: 2C00.Z (Malignant neoplasms of anus or anal canal, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.