Benign neoplasm of colon, rectum, anus and anal canal (D12) ICD-10-CM
The D12 code range covers benign neoplasm of colon, rectum, anus and anal canal with 11 ICD-10-CM diagnosis codes. 10 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Codes in the D12 Range 11 codes · 10 billable
- D12 Benign neoplasm of colon, rectum, anus and anal canalNon-billable
- D12.0 Benign neoplasm of cecum
- D12.1 Benign neoplasm of appendix
- D12.2 Benign neoplasm of ascending colon
- D12.3 Benign neoplasm of transverse colon
- D12.4 Benign neoplasm of descending colon
- D12.5 Benign neoplasm of sigmoid colon
- D12.6 Benign neoplasm of colon, unspecified
- D12.7 Benign neoplasm of rectosigmoid junction
- D12.8 Benign neoplasm of rectum
- D12.9 Benign neoplasm of anus and anal canal
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the D12 range.
Appendiceal Neoplasms
Tumors or cancer of the APPENDIX.
Appendix
A worm-like blind tube extension from the CECUM.
Colon
The segment of LARGE INTESTINE between the CECUM and the RECTUM. It includes the ASCENDING COLON; the TRANSVERSE COLON; the DESCENDING COLON; and the SIGMOID COLON.
Gardner Syndrome
A variant of ADENOMATOUS POLYPOSIS COLI caused by mutation in the APC gene (GENES, APC) on CHROMOSOME 5. It is characterized by not only the presence of multiple colonic polyposis but also extracolonic ADENOMATOUS POLYPS in the UPPER GASTROINTESTINAL TRACT; the EYE; the SKIN; the SKULL; and the FACIAL BONES; as well as malignancy in organs other than the GI tract.
About the D12 Code Range
The ICD-10 code for benign neoplasm of colon, rectum, anus, and anal canal is D12, with more specific codes assigned based on the exact location of the growth. These codes are used to identify and classify non-cancerous tumors, such as polyps or adenomas, in different parts of the large intestine, rectum, and anus.
This section covers benign tumors in areas including the cecum (D12.0), appendix (D12.1), ascending colon (D12.2), transverse colon (D12.3), descending colon (D12.4), sigmoid colon (D12.5), rectosigmoid junction (D12.7), rectum (D12.8), and anus or anal canal (D12.9). For example, common terms like "polyp of cecum" or "adenoma of sigmoid colon" correspond to specific codes like D12.0 and D12.5, respectively. Using these precise ICD-10 codes helps medical coders document benign growths accurately for appropriate patient management, billing, and statistical purposes.
Questions About This Page
How many billable codes are in the D12 range?
Of the 11 codes in this range, 10 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the D12 range classify?
The range classifies benign neoplasm of colon, rectum, anus and anal canal. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
