ICD-10 Code F16.129 – Hallucinogen abuse with intoxication, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F16.129 – Hallucinogen abuse with intoxication, unspecified
What it is
This code identifies abuse of a hallucinogen with signs of intoxication, when the specific substance is not documented. It is used when the record supports misuse and acute effects, but details are limited.
Clinical signs
Clinical features vary; refer to documentation. Typical intoxication may include altered perception, impaired judgment, confusion, or behavioral changes after hallucinogen use.
When to use this code
Use this code when the provider documents hallucinogen abuse and intoxication, but does not name the drug. It also fits when the chart confirms acute intoxication from a hallucinogen without further specificity. If the substance or use pattern is clearer, code to the more specific option.
Do not use for
Do not use this code for dependence, uncomplicated use, or hallucinogen use without intoxication. Check documentation if the encounter is for poisoning, adverse effect, or a different substance.
Coding tip
Query for the specific hallucinogen and the type of substance use if the note only says “intoxicated.”