Is Q85.0 a billable ICD-10-CM code?

No. Q85.0 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does Q85.0 sit in the tabular list?

Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0), in the block Other congenital malformations (Q80-Q89).

What cannot be coded together with Q85.0?

Q85.0 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 Q85.0 (Q85) and apply to it just the same.

Q85.0

Q85.0 — Neurofibromatosis (nonmalignant)

Non-billable headerICD-10-CM

Q85.0 is a non-billable header ICD-10-CM code for neurofibromatosis (nonmalignant). It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above Q85.0

These are not written on Q85.0, but they bind it: a note on a category applies to every code beneath it. Billing Q85.0 with anything listed here is a denial.

Written on Q85 — Phakomatoses, not elsewhere classified

ataxia telangiectasia [Louis-Bar] (G11.3)
familial dysautonomia [Riley-Day] (G90.1)

Other codes that can never be billed with Q85.0

These codes carry an Excludes1 note pointing at Q85.0. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Q85.0 alone.

D33Benign neoplasm of brain and other parts of central nervous system
D36.1Benign neoplasm of peripheral nerves and autonomic nervous system
D48Neoplasm of uncertain behavior of other and unspecified sites

Risk adjustment

Q85.0 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

Q85.0 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 Q85.0

5 child codes. Green means billable.

Related codes at this level

Codes that share Q85. If Q85.0 is not quite right, the correct code is usually one of these.

Questions about Q85.0

Is Q85.0 a billable ICD-10-CM code?: No. Q85.0 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does Q85.0 sit in the tabular list?: Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0), in the block Other congenital malformations (Q80-Q89).
What cannot be coded together with Q85.0?: Q85.0 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 Q85.0 (Q85) and apply to it just the same.