ICD-10 Code F19.90 – Other psychoactive substance use, unspecified, uncomplicated (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F19.90 – Other psychoactive substance use, unspecified, uncomplicated
What it is
Use this code for documented use of a psychoactive substance when the specific substance is not named, and there is no complication. It indicates use or abuse-related coding without a more precise diagnosis.
Clinical signs
Clinical features vary; refer to documentation. You may see behavioral, cognitive, or social effects associated with substance use, but the record must support uncomplicated use rather than intoxication, withdrawal, or a substance-induced disorder.
When to use this code
Use F19.90 when the provider documents other psychoactive substance use and does not identify the substance more specifically. It also fits when the record shows use without complications, comorbidity, or a more detailed substance-related diagnosis. Check documentation if the chart is vague.
Do not use for
Do not use this code for intoxication, withdrawal, or substance-induced mental or physical disorders. Also avoid it when a specific psychoactive substance is identified and a more exact code is available.
Coding tip
If the substance name, complication, or severity is documented, code that more specific diagnosis instead of F19.90.