ICD-10 Code F16.183 – Hallucinogen abuse with hallucinogen persisting perception disorder (flashbacks) (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F16.183 – Hallucinogen abuse with hallucinogen persisting perception disorder (flashbacks)
What it is
Use this code for hallucinogen abuse when the patient also has persistent perceptual disturbances after use, often described as flashbacks. It identifies both ongoing misuse and the persisting perception disorder.
Clinical signs
Clinical features may include recurrent visual disturbances, altered perception, or flashback episodes after hallucinogen use. Clinical features vary; refer to documentation.
When to use this code
Assign F16.183 when the record documents hallucinogen abuse plus hallucinogen persisting perception disorder. Use it when the clinician links the perceptual symptoms to hallucinogen use, not to another neurologic or psychiatric cause. Check documentation for the substance and current abuse status.
Do not use for
Do not use this code for hallucinogen use without abuse, or for perceptual symptoms not attributed to hallucinogens. Check documentation if the record suggests intoxication, dependence, or another diagnosis.
Coding tip
Confirm both elements are documented: hallucinogen abuse and persisting perception disorder, before assigning F16.183.