C20
BillableMalignant neoplasm of rectum
Malignant neoplasm of rectum
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Malignant neoplasm of rectal ampulla
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- •Kaposi's sarcoma of gastrointestinal sitesC46.4
- malignant carcinoid tumor of the rectum (C7A.026)
Excludes 2
Conditions not included here, but the patient may have both
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(68)
SNOMED CT
- Primary malignant neoplasm of rectum93984006
- Cancer of the colon, overlapping sites109838007
- Malignant neoplasm of overlapping sites of colon109838007
- Overlapping malignant neoplasm of colon109838007
- Adenocarcinoma of rectum254582000
- Cancer rectum melanoma276822007
- Malignant melanoma of rectum276822007
- Local recurrence of malignant neoplasm of rectum314966008
- Local recurrence of malignant tumor of rectum314966008
- Local recurrence of malignant tumour of rectum314966008
- Malignant neoplasm of rectum363351006
- Malignant tumor of rectum363351006
- Malignant tumour of rectum363351006
- Rectal cancer363351006
- Adenocarcinoma of anorectum447886005
- Anorectal adenocarcinoma447886005
- Carcinoma of upper rectum448994001
- Malignant epithelial neoplasm of upper rectum448994001
- Rectal squamous cell carcinoma766979005
- Squamous cell carcinoma of rectum766979005
- Leiomyosarcoma of rectum1156783003
- Primary malignant mesenchymal neoplasm of rectum1197355000
- Primary sarcoma of rectum1197355000
- Primary rectal squamous cell carcinoma1268633007
- Primary squamous cell carcinoma of rectum1268633007
- Overlapping malignant neoplasm of colon and rectum96281000119107
UMLS
- Malignant Neoplasm of RectumC0949022
- Malignant Neoplasm of the RectumC0949022
- Malignant Rectal NeoplasmC0949022
- Malignant Rectal TumorC0949022
- Malignant Tumor of RectumC0949022
- Malignant Tumor of the RectumC0949022
- Malignant neoplasm of rectumC0949022
- Malignant neoplasm of rectum (disorder)C0949022
- Malignant tumor of rectumC0949022
- Malignant tumour of rectumC0949022
- Malignant neoplasm of rectal ampullaC0864873
Clinical Terms
- Local recurrence of malignant tumor of rectum
- Squamous cell carcinoma of rectum
- Malignant Rectal Tumor
- Anorectal adenocarcinoma
- Adenocarcinoma of anorectum
- Adenocarcinoma of rectum
- Overlapping malignant neoplasm of colon and rectum
- Primary rectal squamous cell carcinoma
- Cancer of the colon, overlapping sites
- Malignant neoplasm of overlapping sites of colon
- Malignant epithelial neoplasm of upper rectum
- Primary malignant neoplasm of rectum
- Rectal squamous cell carcinoma
- Cancer rectum melanoma
- Malignant Tumor of the Rectum
- Primary sarcoma of rectum
- Malignant Neoplasm of the Rectum
- Malignant Tumor of Rectum
- Malignant Rectal Neoplasm
- Primary squamous cell carcinoma of rectum
- Overlapping malignant neoplasm of colon
- Primary malignant mesenchymal neoplasm of rectum
- Malignant neoplasm of rectal ampulla
- Malignant tumour of rectum
- Malignant neoplasm of rectum (disorder)
- Malignant melanoma of rectum
- Carcinoma of upper rectum
- Rectal cancer
- Leiomyosarcoma of rectum
- Local recurrence of malignant tumour of rectum
- Local recurrence of malignant neoplasm of rectum
Frequently Asked Questions
What is the ICD-10 code for malignant neoplasm of rectum?
The ICD-10-CM code for malignant neoplasm of rectum is C20. The full clinical description is "Malignant neoplasm of rectum". C20 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code C20 mean?
ICD-10-CM code C20 represents “Malignant neoplasm of rectum”. It is classified under Chapter 2: Neoplasms and is a billable/specific code that can be used on a claim.
Is C20 a billable code?
Yes, C20 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is C20 in?
C20 is in Chapter 2: Neoplasms (codes C00-D49).
What codes cannot be used with C20?
C20 has Excludes1 notes indicating codes that cannot be used together with it, including: Kaposi's sarcoma of gastrointestinal sites (C46.4); malignant carcinoid tumor of the rectum (C7A.026).
What SNOMED CT codes does C20 map to?
C20 maps to 13 SNOMED CT concepts: 447886005, 254582000, 109838007, 276822007, 448994001, and 8 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for C20?
C20 is linked to 2 UMLS Concept Unique Identifiers: C0949022, C0864873. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does C20 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like malignant neoplasm of rectum 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 C20?
C20 maps to the ICD-11 code: 2B92.Z (Malignant neoplasms of rectum, unspecified).
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.
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.