D13.91 — Familial adenomatous polyposis
D13.91 is a billable, specific ICD-10-CM code for familial adenomatous polyposis. It is valid for submission on a claim.
Risk adjustment
D13.91 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
D13.91 is named in 10 Medicare coverage policies — 10 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56394Billing and Coding: Colonoscopy and Sigmoidoscopy-Diagnostic
- A56531Billing and Coding: Octreotide Acetate for Injectable Suspension (Sandostatin® LAR Depot)
- A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
- A57063Billing and Coding: Diagnostic and Therapeutic Esophagogastroduodenoscopy
How D13.91 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to D13.91.
- Polyposis›familial›adenomatous
- Polyposis›intestinal›adenomatous
Related codes at this level
Codes that share D13.9. If D13.91 is not quite right, the correct code is usually one of these.
Questions about D13.91
- Is D13.91 a billable ICD-10-CM code?
- Yes. D13.91 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does D13.91 sit in the tabular list?
- Neoplasms (C00-D49), in the block Benign neoplasms, except benign neuroendocrine tumors (D10-D36).