ICD-10-CM Code C21.1
Malignant neoplasm of anal canal
Billable CodeBillable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
C21.1 is a billable ICD code used to specify a diagnosis of malignant neoplasm of anal canal. A 'billable code' is detailed enough to be used to specify a medical diagnosis.
The ICD code C21 is used to code Colorectal cancer
Colorectal cancer (also known as colon cancer, rectal cancer, or bowel cancer) is the development of cancer in the colon or rectum (parts of the large intestine). It is due to the abnormal growth of cells that have the ability to invade or spread to other parts of the body. Signs and symptoms may include blood in the stool, a change in bowel movements, weight loss, and feeling tired all the time.
|MeSH Codes:||, ,|
|ICD 9 Codes:||153.0, 154.0, 154.1|
Diagram of the lower gastrointestinal tract
Coding Notes for C21.1 Info for medical coders on how to properly use this ICD-10 code
Inclusion TermsInclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive.
- Malignant neoplasm of anal sphincter
- DRG Group #374-376 - Digestive malignancy with MCC.
- DRG Group #374-376 - Digestive malignancy with CC.
- DRG Group #374-376 - Digestive malignancy without CC or MCC.
Related Concepts SNOMET-CT
- Primary malignant neoplasm of anal canal (disorder)
Coding Advice SNOMET-CT
- Possible requirement for morphology code
ICD-10-CM Neoplasms Index References for 'C21.1 - Malignant neoplasm of anal canal'
The ICD-10-CM Neoplasms Index links the below-listed medical terms to the ICD code C21.1. Click on any term below to browse the neoplasms index.
Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)
This is the official exact match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that in all cases where the ICD9 code 154.2 was previously used, C21.1 is the appropriate modern ICD10 code.