ICD-10 Code F18.15 – Inhalant abuse with inhalant-induced psychotic disorder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F18.15 – Inhalant abuse with inhalant-induced psychotic disorder
What it is
F18.15 identifies inhalant abuse complicated by a psychotic disorder caused by inhalant use. Use it when the record links the psychotic symptoms directly to inhalant exposure.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include hallucinations, delusions, disorganized thinking, or marked behavioral disturbance occurring during or after inhalant use.
When to use this code
Use this code when the clinician documents inhalant abuse and specifically states an inhalant-induced psychotic disorder. It also fits when the psychosis is attributed to inhalant intoxication or misuse rather than a primary psychiatric condition.
Check documentation if the chart only notes inhalant use, substance abuse, or psychotic symptoms without a clear causal link. You need explicit provider documentation tying the psychosis to inhalants.
Do not use for
Do not use this code for inhalant use without psychosis, or for a primary psychotic disorder unrelated to substance use. Do not assume causation from positive toxicology alone.
Coding tip
Look for provider wording such as “inhalant-induced psychotic disorder” or “psychosis due to inhalant abuse” before assigning F18.15.