ICD-11 classes
06 Mental, behavioural or neurodevelopmental disorders
Neurocognitive disorders
Dementia
6D80 — Dementia due to Alzheimer disease
ICD-11 6D80 — Dementia due to Alzheimer disease
Dementia due to Alzheimer disease is the most common form of dementia. Onset is insidious with memory impairment typically reported as the initial presenting complaint. The characteristic course is a slow but steady decline from a previous level of cognitive functioning with impairment in additional cognitive domains (such as executive functions, attention, language, social cognition and judgment, psychomotor speed, visuoperceptual or visuospatial abilities) emerging with disease progression. Dementia due to Alzheimer disease may be accompanied by mental and behavioural symptoms such as depressed mood and apathy in the initial stages of the disease and may be accompanied by psychotic symptoms, irritability, aggression, confusion, abnormalities of gait and mobility, and seizures at later stages. Positive genetic testing, family history and gradual cognitive decline are suggestive of Dementia due to Alzheimer disease.
The diagnosis includes nothing.
The diagnosis excludes nothing.
Diagnosis with code 6D80 contains 5 clarifying diagnoses:
- 6D80.0 — Dementia due to Alzheimer disease with early onset
- 6D80.1 — Dementia due to Alzheimer disease with late onset
- 6D80.2 — Alzheimer disease dementia, mixed type, with cerebrovascular disease
- 6D80.3 — Alzheimer disease dementia, mixed type, with other nonvascular aetiologies
- 6D80.Z — Dementia due to Alzheimer disease, onset unknown or unspecified