Unspecified dementia, severe, with psychotic disturbance

This code signifies a severe, unspecified form of dementia accompanied by psychotic features such as hallucinations or delusions. The patient exhibits significant cognitive decline impacting daily functioning, with the specific type of dementia not yet determined or documented.

Apply this code when documentation clearly indicates severe dementia with psychotic symptoms, but the underlying etiology (e.g., Alzheimer's, vascular) is not specified. This is appropriate for initial evaluations or when a definitive diagnosis of the dementia type is pending. Supporting documentation should detail the severity of cognitive impairment and the presence of psychotic disturbances.

• Ensure documentation specifies "severe" dementia and the presence of "psychotic disturbance" for accurate code assignment.
• Avoid using this code if a more specific type of dementia (e.g., Alzheimer's, vascular) is documented; instead, use the appropriate code from categories F01 or F02.
• Always sequence this code as the primary diagnosis if it is the reason for the encounter, followed by any associated conditions.