ICD-10 Code F16.20 – Hallucinogen dependence, uncomplicated (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F16.20 – Hallucinogen dependence, uncomplicated
What it is
F16.20 identifies uncomplicated dependence on hallucinogens, meaning the patient has a documented pattern of ongoing use with dependence, without a specified complication. Use this code when the record clearly supports hallucinogen dependence.
Clinical signs
Clinical features may include strong craving, loss of control over use, and continued use despite harm. Clinical features vary; refer to documentation.
When to use this code
Use F16.20 when the provider documents hallucinogen dependence and does not describe intoxication, withdrawal, psychotic disorder, or another complication. It may also fit when the note states “uncomplicated dependence” or equivalent wording. Check documentation if the substance or clinical state is unclear.
Do not use for
Do not use this code for simple hallucinogen use, abuse, intoxication, or withdrawal. If the chart describes a specific induced mental disorder or another complication, code that condition instead.
Coding tip
Confirm both the substance and the dependence diagnosis are explicitly documented before assigning F16.20.