ICD-10 Code F16.94 – Hallucinogen use, unspecified with hallucinogen-induced mood disorder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F16.94 – Hallucinogen use, unspecified with hallucinogen-induced mood disorder
What it is
This code identifies hallucinogen use with a mood disorder caused by the substance. It applies when the mood symptoms are linked to hallucinogen use, and the specific hallucinogen is not documented.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include depressed, elevated, or irritable mood occurring in the setting of hallucinogen use, with evidence that the substance caused the mood disturbance.
When to use this code
Use this code when the record documents hallucinogen use and a hallucinogen-induced mood disorder, but does not name the hallucinogen. You should assign it when the provider links the mood disorder to the substance. Check documentation if the mood symptoms are better explained by a primary psychiatric disorder.
Do not use for
Do not use this code if the hallucinogen is specified and a more detailed code is available. Also avoid it when the mood disorder is unrelated to substance use or the documentation does not support a causal relationship.
Coding tip
Confirm both the substance use and the induced mood disorder are documented before assigning F16.94.