Dem in other diseases classd elswhr, severe, with agitation

This code signifies a severe cognitive decline due to an underlying medical condition other than Alzheimer's disease, characterized by significant impairment in daily activities and the presence of agitation. The dementia is a manifestation of another primary disease process, such as Parkinson's disease, Huntington's disease, or HIV.

Apply this code when documentation clearly indicates severe dementia secondary to a specified underlying disease, along with behavioral disturbances like restlessness, aggression, or emotional lability. The medical record must explicitly state the severity of dementia and the presence of agitation.

• Always code the underlying disease first, followed by this dementia code.
• Ensure documentation specifies "severe" dementia and "agitation" to support this specific code.
• Differentiate from F02.C10 (without agitation) and F02.C18 (with other behavioral disturbance).