6D8Z Dementia, unknown or unspecified cause

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2025-01

coding note

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. When dementia is due to multiple aetiologies, code all that apply.

postcoordination

synonyms

• Dementia, unknown or unspecified cause
• Dementia NOS
• Dementia, unspecified
• senile melancholia
• senile depression
• senile paranoid reaction
• senile psychosis
• dementia of unknown etiology
• End stage dementia
• advanced dementia
• Presenile psychotic mental disorder
• Paranoid dementia
• Presenile dementia not otherwise specified
• Senile dementia
• SD - [senile dementia] NOS
• uncomplicated senile dementia
• Old age dementia

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