Is D31.6 a billable ICD-10-CM code?

No. D31.6 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does D31.6 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 D31.6?

D31.6 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 D31.6 (D31) and apply to it just the same.

D31.6

D31.6 — Benign neoplasm of unspecified site of orbit

Non-billable headerICD-10-CM

D31.6 is a non-billable header ICD-10-CM code for benign neoplasm of unspecified site of orbit. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

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

benign neoplasm of orbital bone (D16.4)

Inclusion terms

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

Benign neoplasm of connective tissue of orbit
Benign neoplasm of extraocular muscle
Benign neoplasm of peripheral nerves of orbit
Benign neoplasm of retrobulbar tissue
Benign neoplasm of retro-ocular tissue

Excludes1 inherited from the categories above D31.6

These are not written on D31.6, but they bind it: a note on a category applies to every code beneath it. Billing D31.6 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-)

Other codes that can never be billed with D31.6

These codes carry an Excludes1 note pointing at D31.6. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading D31.6 alone.

D21.0Benign neoplasm of connective and other soft tissue of head, face and neck
D33Benign neoplasm of brain and other parts of central nervous system
D36.1Benign neoplasm of peripheral nerves and autonomic nervous system

Risk adjustment

D31.6 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

D31.6 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 D31.6

3 child codes. Green means billable.

Related codes at this level

Codes that share D31. If D31.6 is not quite right, the correct code is usually one of these.

Questions about D31.6

Is D31.6 a billable ICD-10-CM code?: No. D31.6 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does D31.6 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 D31.6?: D31.6 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 D31.6 (D31) and apply to it just the same.