Oth psychoactv sub use, unsp w psych disorder w delusions

This code signifies a patient presenting with a psychotic disorder characterized by delusions, where the underlying cause is the use of an unspecified psychoactive substance. The specific substance involved is not identified, and the pattern of use is also unspecified. This diagnosis indicates a direct causal link between the substance use and the psychotic symptoms.

Apply this code when documentation clearly indicates a substance-induced psychotic disorder with delusions, but the specific psychoactive substance responsible is unknown or not documented. This is appropriate when the clinician has established that the psychosis is not due to another mental disorder or a general medical condition. Documentation should support the presence of delusions and the temporal relationship to substance use.

• Ensure documentation explicitly states "unspecified psychoactive substance" and "unspecified use" to support this code.
• Distinguish from substance-induced psychotic disorder without delusions (F19.951) or when the specific substance is known (e.g., F10.950 for alcohol).
• Always sequence this code as the primary diagnosis when it is the reason for the encounter, followed by any associated symptoms or complications.