ICD-10 Code F12.921 – Cannabis use, unspecified with intoxication delirium (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F12.921 – Cannabis use, unspecified with intoxication delirium
What it is
F12.921 identifies cannabis use, unspecified when intoxication is severe enough to cause delirium. Use it when the record documents cannabis-related intoxication with an acute confusional state.
Clinical signs
Typical findings include disturbed attention, disorientation, reduced awareness of the environment, and fluctuating cognition. Clinical features vary; refer to documentation.
When to use this code
Use this code when the clinician documents cannabis intoxication delirium and does not specify the cannabis use pattern. It fits encounters where delirium is attributed to cannabis intoxication, not to another medical or substance-related cause. Check documentation if the record is unclear.
Do not use for
Do not use it for simple cannabis intoxication without delirium, or for delirium caused by another substance or condition. If the chart does not support cannabis involvement, check documentation.
Coding tip
Confirm both intoxication and delirium are documented before assigning F12.921.