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D12.9

D12.9Benign neoplasm of anus and anal canal

Billable / specific codeICD-10-CM

D12.9 is a billable, specific ICD-10-CM code for benign neoplasm of anus and anal canal. It is valid for submission on a claim.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Benign neoplasm of anus NOS

Other codes that can never be billed with D12.9

These codes carry an Excludes1 note pointing at D12.9. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading D12.9 alone.

  • D23.5Other benign neoplasm of skin of trunk

Risk adjustment

D12.9 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

D12.9 is named in 16 Medicare coverage policies 16 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A55937Billing and Coding: Diagnostic Colonoscopy
  • A56394Billing and Coding: Colonoscopy and Sigmoidoscopy-Diagnostic
  • A56456Billing and Coding: Colonoscopy/Sigmoidoscopy/Proctosigmoidoscopy
  • A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax

Related codes at this level

Codes that share D12. If D12.9 is not quite right, the correct code is usually one of these.

Questions about D12.9

Is D12.9 a billable ICD-10-CM code?
Yes. D12.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does D12.9 sit in the tabular list?
Neoplasms (C00-D49), in the block Benign neoplasms, except benign neuroendocrine tumors (D10-D36).
What cannot be coded together with D12.9?
D12.9 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.