ICD-10 Code F19.931 – Other psychoactive substance use, unspecified with withdrawal delirium (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F19.931 – Other psychoactive substance use, unspecified with withdrawal delirium
What it is
This code identifies withdrawal delirium caused by an unspecified psychoactive substance. It means the patient has delirium during withdrawal, but the substance is not named in the record.
Clinical signs
Typical findings include acute confusion, reduced awareness, disorganized thinking, and fluctuating attention. Clinical features vary; refer to documentation for the substance involved and whether the delirium is attributed to withdrawal.
When to use this code
Use this code when the provider documents withdrawal delirium linked to a psychoactive substance, but does not specify the drug. It is also appropriate when the note clearly supports substance withdrawal delirium and no more specific code is available.
Check documentation for the exact substance, since a more specific code may apply if it is named. You should also confirm that delirium is part of the withdrawal presentation, not a separate mental status change.
Do not use for
Do not use this code for intoxication, uncomplicated withdrawal, or delirium from another cause. If the substance is identified and a more specific code exists, use that code instead.
Coding tip
Look for explicit provider wording that connects delirium to substance withdrawal before assigning F19.931.