Dem in other diseases classd elswhr, severe, with anxiety

This code signifies severe dementia that is a manifestation of another underlying medical condition, accompanied by significant anxiety symptoms. The cognitive decline is profound, impacting daily functioning and requiring substantial assistance, while the anxiety component is clinically significant and contributes to the patient's distress.

Apply this code when documentation clearly indicates severe dementia secondary to a specified medical condition (e.g., Parkinson's disease, Huntington's disease, HIV disease) and the patient exhibits clinically significant anxiety. Documentation should specify the severity of dementia and the presence of anxiety, often noted in psychiatric evaluations or progress notes.

• Always code the underlying disease first, followed by this dementia code.
• Ensure documentation specifies "severe" dementia and the presence of anxiety.
• Differentiate from F02.C0-F02.C3 based on the severity of dementia.