ICD-10 Code F16.229 – Hallucinogen dependence with intoxication, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F16.229 – Hallucinogen dependence with intoxication, unspecified
What it is
F16.229 identifies hallucinogen dependence with current intoxication when the specific hallucinogen is not documented. Use it when dependence is present and the patient is actively intoxicated, but the substance remains unspecified.
Clinical signs
Clinical features vary; refer to documentation. Intoxication may include altered perception, impaired judgment, mood changes, and behavioral disturbance, with evidence of dependence such as ongoing use despite harm or difficulty controlling use.
When to use this code
Use this code when the record clearly states hallucinogen dependence and intoxication, but does not name the drug. It fits encounters for acute intoxication with dependence documented by the provider. If the note identifies the hallucinogen, code the specific substance instead.
Do not use for
Do not use this code for hallucinogen abuse, simple use, or intoxication without dependence. Check documentation if the substance is named, because a more specific code may apply.
Coding tip
Confirm both dependence and intoxication are documented before assigning F16.229.