Hallucinogen use, unsp w psychotic disorder w delusions

This code signifies a patient's problematic pattern of hallucinogen use that has led to a psychotic disorder characterized by delusions. The specific type of hallucinogen used is not documented or is unknown. The delusions are a direct consequence of the hallucinogen use.

Apply this code when documentation clearly indicates a diagnosis of a hallucinogen-induced psychotic disorder where delusions are present, and the specific hallucinogen is not identified. This is appropriate for acute or chronic presentations where the substance use is directly linked to the psychotic symptoms.

• Ensure documentation explicitly states "delusions" as a symptom of the hallucinogen-induced psychotic disorder.
• Only use this code when the specific hallucinogen is unspecified; otherwise, a more specific F16.xx code should be chosen.
• This code should be sequenced as the primary diagnosis when the hallucinogen-induced psychotic disorder is the reason for the encounter.