ICD-10 Code F16.120 – Hallucinogen abuse with intoxication, uncomplicated (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F16.120 – Hallucinogen abuse with intoxication, uncomplicated
What it is
This code identifies hallucinogen abuse with current intoxication, without documented complications. Use it when the record shows harmful use of a hallucinogenic substance and the patient is acutely intoxicated.
Clinical signs
Clinical features vary; refer to documentation. Typical intoxication may include perceptual changes, altered judgment, anxiety, agitation, or impaired attention after hallucinogen use.
When to use this code
Use this code when the provider documents hallucinogen abuse and intoxication, and no delirium, psychotic disorder, or other complication is recorded. It fits ED, inpatient, or outpatient notes that clearly link the current symptoms to hallucinogen intoxication. Check documentation if the substance or severity is unclear.
Do not use for
Do not use it for hallucinogen dependence, remission, or use without intoxication. Also avoid it when the chart documents a more specific hallucinogen-related disorder or another substance is responsible.
Coding tip
Confirm both the abuse pattern and the intoxication state in the provider note before assigning F16.120.