2027 ICD-10-CM Diagnosis Code D12.6Benign neoplasm of colon, unspecified
ICD-10-CM Codes›C00–D49›D10-D36›D12
- Billable — Valid for Submission
- Not Chronic
D12.6 is a billable ICD-10-CM diagnosis code for benign neoplasm of colon, unspecified. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 393 through 395. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Benign neoplasms.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Adenoma of large intestine
- Adenomatous polyp of colon
- Adenomatous polyposis of colon
- Attenuated familial adenomatous polyposis
- Benign epithelial neoplasm of large intestine
- Benign gastrointestinal stromal neoplasm of large intestine
- Benign lymphoid polyposis of intestine
- Benign mesenchymoma of large intestine
- Benign neoplasm of colon
- Benign neoplasm of large intestine
- Benign neoplasm of large intestine with hemorrhage
- Benign polyp of colon
- Benign stromal neoplasm of gastrointestinal tract
- Benign tubular adenoma of large intestine
- Cap polyposis
- Dysplasia of colon
- Dysplasia of large intestine
- Familial adenomatous polyposis
- Gardner syndrome
- Gastrointestinal stromal tumor of large intestine
- Hereditary mixed polyposis syndrome
- Hyperplastic polyp of colon
- Hyperplastic polyp of intestine
- Hyperplastic polyp of large intestine
- Hyperplastic polyposis of colon
- Inflammatory polyposis of intestine
- Intestinal polyposis syndrome
- Leiomyoma of large intestine
- Low grade glandular intraepithelial neoplasia of large intestine
- Malignant neoplasm of intestine due to familial adenomatous polyposis
- Metaplastic polyposis of intestine
- Mild dysplasia of colon
- Moderate dysplasia of colon
- MYH-associated polyposis
- Nonfamilial multiple polyposis syndrome
- Polyposis of large intestine
- Pseudoinvasion in adenomatous polyp of large intestine
- Pseudopolyposis of colon
- Serrated polyp of colon
- Sessile serrated polyp of colon
- Severe dysplasia of colon
- Tubular adenoma
- Tubular adenomatous polyp of colon
- Tubulovillous adenomatous polyp of colon
- Turcot syndrome
- Villous adenomatous polyp of colon
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to D12.6: its own notes plus those printed at D12 and Chapter 2. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Adenomatosis of colon
- Benign neoplasm of large intestine NOS
- Polyposis (hereditary) of colon
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- inflammatory polyp of colon (K51.4-)
Notes
General instructions on how these codes are used.
- Functional activity
- All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
- Morphology [Histology]
- Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
- Primary malignant neoplasms overlapping site boundaries
- A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
- Malignant neoplasm of ectopic tissue
- Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name D12.6, its category, or a range that includes it.
Applicable To 2
These notes mention D12.6.
Excludes2 4
These codes carry an Excludes2 note naming D12.6: its condition is not part of those codes, and both may be reported when the patient has both.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
unspecified site D12.6
Dysplasia See Also: Anomaly;
colon D12.6
high grade, focal D12.6
adenomatous D12.6
adenomatous D12.6
Polyposis See Also: Polyp;
coli D12.6
colon D12.6
familial D12.6
intestinal D12.6
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Benign Colon Neoplasm
a neoplasm that arises from the colon and is characterized by the absence of atypical or malignant cytological and architectural features, and absence of invasive features or metastatic potential.
Table of NeoplasmsClinical
Patient EducationClinical
Benign Tumors
Tumors are abnormal growths in your body. They can be either benign or malignant. Benign tumors aren't cancer. Malignant ones are. Benign tumors grow only in one place. They cannot spread or invade other parts of your body. Even so, they can be dangerous if they press on vital organs, such as your brain.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert D12.6 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About D12.6Overview
What is the ICD-10 code for benign neoplasm of colon, unspecified?
The ICD-10-CM code for benign neoplasm of colon, unspecified is D12.6 (sometimes written as D126). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is D12.6 (Benign neoplasm of colon, rectum, anus and anal canal) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report benign neoplasm of colon, unspecified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does D12.6 group to?
When benign neoplasm of colon, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 394, 395, 393, with relative weights from 0.6379 to 1.5877 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of D12.6?
Under the General Equivalence Mappings, benign neoplasm of colon, unspecified converts to ICD-9-CM 211.3 (benign neoplasm lg bowel). The mapping is approximate, so confirm the match fits the documentation.
