ICD-10 Code F19.99 – Other psychoactive substance use, unspecified with unspecified psychoactive substance-induced disorder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F19.99 – Other psychoactive substance use, unspecified with unspecified psychoactive substance-induced disorder
What it is
This code identifies a psychoactive substance use disorder involving an unspecified substance, along with an unspecified substance-induced disorder. Use it when the record confirms both substance use and a related induced condition, but details are limited.
Clinical signs
Clinical features vary; refer to documentation. Notes may describe intoxication, withdrawal, mood change, psychosis, or other behavioral disturbance linked to psychoactive substance use, but the exact substance and induced disorder are not specified.
When to use this code
Use this code when the provider documents psychoactive substance use and an unspecified substance-induced disorder, but does not name the substance or the induced condition. It may fit emergency, behavioral health, or discharge records with incomplete detail. Check documentation for any later specificity.
Do not use for
Do not use this code if the substance is named or if the induced disorder is clearly identified elsewhere in the record. Do not assign it for uncomplicated substance use without a substance-induced disorder.
Coding tip
Look for both elements: unspecified psychoactive substance use and an unspecified substance-induced disorder; if either is missing, verify the correct code.