In simple words: Severe dementia caused by a physical illness, accompanied by psychotic symptoms like hallucinations or delusions.

Major neurocognitive disorder in other diseases classified elsewhere, severe, with psychotic disturbance such as hallucinations, paranoia, suspiciousness, or delusional state.

Example 1: A patient with a history of Huntington's disease exhibits severe memory impairment, disorientation, and hallucinations., A patient with severe dementia related to Parkinson's disease experiences paranoid delusions and suspiciousness., A patient with a traumatic brain injury develops severe dementia and experiences persistent hallucinations and disorganized thinking.

Documentation should include evidence of an underlying physiological condition causing the dementia, as well as detailed descriptions of the psychotic symptoms exhibited by the patient. This may involve cognitive assessments, mental status examinations, and records of observed behaviors.