Q85

Q85: Phakomatoses, not elsewhere classified

Non-billable headerICD-10-CM

Q85 is a non-billable header ICD-10-CM code for phakomatoses, not elsewhere classified. 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.

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

Other codes that can never be billed with Q85

Their own Excludes1 notes name this code, so the conflict is not listed above.

D48Neoplasm of uncertain behavior of other and unspecified sites
L81Other disorders of pigmentation
Q82Other congenital malformations of skin
D33Benign neoplasm of brain and other parts of central nervous system
D36.1Benign neoplasm of peripheral nerves and autonomic nervous system

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead Q85

4 child codes. Green means billable.