World Health Organization · 2026-01 · English

Dementia

Official WHO ICD-11 MMS tabulation. This international classification is separate from US ICD-10-CM. For complete instructions and postcoordination, consult the WHO browser.

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Coding notes · WHO

This category should only be used for primary tabulation, if the aetiology of the dementia is unknown. If the aetiology of the dementia is known code to the aetiology of the dementia for primary tabulation.

More specific codes

6D80Dementia due to Alzheimer disease 6D81Dementia due to cerebrovascular disease 6D8YDementia, other specified cause 6D8ZDementia, unknown or unspecified cause

US · ICD-10-CM · CDC/NCHS →