Ⅴ.Mental and behavioural disdorders (F00-F99)F00-F09.Organic, including symptomatic, mental disordersF00.Dementia in Alzheimer's diseaseF00.0.Dementia in Alzheimer's disease with early onsetF00.1.Dementia in Alzheimer's disease with late onsetF00.2.Dementia in Alzheimer's disease, atypical or mixed typeF00.9.Dementia in Alzheimer's disease, unspecified F01.Vascular dementiaF01.0.Vascular dementi..