ICD-10 Code F16.259 – Hallucinogen dependence with hallucinogen-induced psychotic disorder, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F16.259 – Hallucinogen dependence with hallucinogen-induced psychotic disorder, unspecified
What it is
This code identifies dependence on a hallucinogen, along with a psychotic disorder caused by that substance. Use it when the record documents both ongoing dependence and a hallucinogen-induced psychotic condition that is not further specified.
Clinical signs
Clinical features may include hallucinations, delusions, disorganized thinking, or marked behavioral changes after hallucinogen use. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents hallucinogen dependence and a psychotic disorder attributed to hallucinogen use, but does not specify the psychotic subtype. It is appropriate when the chart clearly links the psychosis to the substance and no more specific code is supported.
Do not use for
Do not use this code if the record shows hallucinogen use without dependence, or if psychotic symptoms are not documented as substance-induced. Check documentation.
Coding tip
Confirm both dependence and the substance-induced psychotic disorder are explicitly documented before assigning F16.259.