ICD-10 D12.6
Billable / SpecificBenign neoplasm of colon, unspecified
About ICD-10-CM D12.6
ICD-10-CM code D12.6 represents Benign neoplasm of colon, unspecified. This is a billable/specific code in the Neoplasms chapter (block D12). The 2026 edition of ICD-10-CM D12.6 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under D12.6. Per CMS ICD-10-CM Tabular 2026.
- Adenomatosis of colon
- Benign neoplasm of large intestine NOS
- Polyposis (hereditary) of colon
Type 2 Excludes
Not included here, the excluded code is not part of D12.6, but a patient may have both conditions at the same time. Both codes may be coded together when applicable.
- inflammatory polyp of colon (K51.4-)
Medicare LCD Coverage for D12.6
Local Coverage Determinations (LCDs) from CMS MACs that list D12.6 as a covered diagnosis.
Showing top 10 of 253 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing D12.6.
5 Medicare
2 Aetna
CPT Codes Commonly Billed with D12.6
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 45385 Colonoscopy polypectomy — polyps found Gastroenterology
- 45380 Colonoscopy with biopsy — colon polyp, neoplasm of colon, melena, iron deficiency anemia, screening, personal hx polyps, UC, occult blood Gastroenterology
- 45385 Colonoscopy with polypectomy snare — colon polyps all sites, screening, personal/family hx polyps/cancer Gastroenterology
- 45381 Colonoscopy with directed submucosal injection — polyp removal facilitation, same dx as polypectomy Gastroenterology
- 45384 Colonoscopy with hot biopsy forceps polypectomy — small polyp removal Gastroenterology
Convert D12.6 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| D12.6 | 2113 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To D12.6
Other codes in section D10-D36 (Benign neoplasms, except benign neuroendocrine tumors).
ICD-10 D12.6, Billing FAQ
Is ICD-10 code D12.6 billable? +
Yes, D12.6 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to D12.6? +
ICD-10 D12.6 includes: Adenomatosis of colon; Benign neoplasm of large intestine NOS; Polyposis (hereditary) of colon.
What codes are Type 2 Excludes for D12.6? +
Type 2 Excludes (may be coded together when both conditions exist): inflammatory polyp of colon (K51.4-)
What CPT codes are commonly billed with D12.6? +
Procedures frequently paired with D12.6 include: 45385, 45380, 45385, 45381, 45384.
What ICD-9 codes does D12.6 map to? +
Per CMS GEMs, D12.6 maps to ICD-9 codes: 2113. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on July 16, 2026.
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