Is D13.99 a billable ICD-10-CM code?

Yes. D13.99 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does D13.99 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 D13.99?

D13.99 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above D13.99 (D13) and apply to it just the same.

D13.99

D13.99 — Benign neoplasm of ill-defined sites within the digestive system

Billable / specific codeICD-10-CM

D13.99 is a billable, specific ICD-10-CM code for benign neoplasm of ill-defined sites within the digestive system. It is valid for submission on a claim.

Inclusion terms

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

Benign neoplasm of digestive system NOS
Benign neoplasm of intestine NOS
Benign neoplasm of spleen

Excludes1 inherited from the categories above D13.99

These are not written on D13.99, but they bind it: a note on a category applies to every code beneath it. Billing D13.99 with anything listed here is a denial.

Written on D13 — Benign neoplasm of other and ill-defined parts of digestive system

benign stromal tumors of digestive system (D21.4)

Risk adjustment

D13.99 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

D13.99 is named in 8 Medicare coverage policies — 8 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56531Billing and Coding: Octreotide Acetate for Injectable Suspension (Sandostatin® LAR Depot)
A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
A56695Billing and Coding: Implantable Infusion Pump
A57063Billing and Coding: Diagnostic and Therapeutic Esophagogastroduodenoscopy

Code history

D13.99 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share D13.9. If D13.99 is not quite right, the correct code is usually one of these.

D13.91Familial adenomatous polyposis

Questions about D13.99

Is D13.99 a billable ICD-10-CM code?: Yes. D13.99 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does D13.99 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 D13.99?: D13.99 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above D13.99 (D13) and apply to it just the same.