Is D31.9 a billable ICD-10-CM code?

No. D31.9 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does D31.9 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 D31.9?

D31.9 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 D31.9 (D31) and apply to it just the same.

D31.9

D31.9 — Benign neoplasm of unspecified part of eye

Non-billable headerICD-10-CMunspecified

D31.9 is a non-billable header ICD-10-CM code for benign neoplasm of unspecified part of eye. It cannot be billed on its own: choose one of the more specific child codes below.

Inclusion terms

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

Benign neoplasm of eyeball

Excludes1 inherited from the categories above D31.9

These are not written on D31.9, but they bind it: a note on a category applies to every code beneath it. Billing D31.9 with anything listed here is a denial.

Written on D31 — Benign neoplasm of eye and adnexa

benign neoplasm of connective tissue of eyelid (D21.0)
benign neoplasm of optic nerve (D33.3)
benign neoplasm of skin of eyelid (D22.1-, D23.1-)

Risk adjustment

D31.9 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.

Code history

D31.9 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead D31.9

3 child codes. Green means billable.

Related codes at this level

Codes that share D31. If D31.9 is not quite right, the correct code is usually one of these.

Questions about D31.9

Is D31.9 a billable ICD-10-CM code?: No. D31.9 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does D31.9 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 D31.9?: D31.9 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 D31.9 (D31) and apply to it just the same.