F16.9

Non-billable

Hallucinogen use, unspecified

F16.9 is the ICD-10-CM code for Hallucinogen use, unspecified. It is a non-billable category code — use a more specific child code such as F16.90 for billing.

Status
Header (non-billable)
Chapter
F01-F99
Parent
F16
Subcodes
7
Edition
FY2026

F01-F99 Mental, Behavioral and Neurodevelopmental disorders

Excludes1 — not coded here

  • hallucinogen abuse (F16.1-)
  • hallucinogen dependence (F16.2-)

Frequently asked questions

What is ICD-10 code F16.9?
F16.9 is the ICD-10-CM code for "Hallucinogen use, unspecified". It falls under F01-F99 Mental, Behavioral and Neurodevelopmental disorders.
Is F16.9 a billable code?
No — F16.9 is a non-billable header code. Use a more specific child code (such as F16.90) for billing.
What are the subcodes of F16.9?
F16.9 has 7 more specific child codes, including F16.90, F16.91, F16.92.
What is excluded from F16.9?
Excludes1 (not coded here): hallucinogen abuse (F16.1-); hallucinogen dependence (F16.2-).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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