ICD-10 Code F12.959 – Cannabis use, unspecified with psychotic disorder, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F12.959 – Cannabis use, unspecified with psychotic disorder, unspecified
What it is
This code identifies cannabis use disorder, unspecified, with a psychotic disorder that is not further specified. Use it when the record links cannabis use to psychotic symptoms, but the exact psychotic diagnosis is not documented.
Clinical signs
Clinical features vary; refer to documentation. Records may describe hallucinations, delusions, disorganized thinking, or other psychotic symptoms occurring in the setting of cannabis use.
When to use this code
Use this code when the clinician documents cannabis use with an associated psychotic disorder, but does not name schizophrenia, mood disorder with psychotic features, or another specific psychotic condition. It also fits when the cannabis-related psychosis is described as unspecified. Check documentation for the causal relationship and the level of diagnostic detail.
Do not use for
Do not use this code if the chart identifies a more specific psychotic disorder or if cannabis use is not linked to the psychosis. Avoid it when the record supports only cannabis use without psychotic features.
Coding tip
Code the highest level of specificity documented, and query the provider if the psychotic disorder is unclear or the cannabis relationship is not explicit.