Table 1.

ICD-9 Diagnosis Codes Used to Identify Veterans with Dementia

ICD-9 diagnostic code	Description
290.xx	Pre-senile and senile dementia, vascular dementia
291.2	Alcohol-induced persistent dementia
292.82	Drug-induced persistent dementia
294.1x	Dementia in conditions classified elsewhere with/without behavioral disturbance
294.2x	Dementia, unspecified, with/without behavioral disturbance
294.8	Other persistent mental disorders due to conditions classified elsewhere
331.0	Alzheimer’s disease