Dementia due to Parkinson disease

Description

Dementia due to Parkinson disease develops among individuals with idiopathic Parkinson disease and is characterized by impairment in attention, memory, executive and visuo-spatial functions. Mental and behavioral symptoms such as changes in affect, apathy and hallucinations may also be present. Onset is insidious and the course is one of gradual worsening of symptoms.

Coding note

This category should never be used in primary tabulation. The codes are provided for use as supplementary or additional codes when it is desired to identify the presence of dementia in diseases classified elsewhere. When dementia is due to multiple aetiologies, code all that apply.

Coding note from above levels

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.

Index terms

Dementia due to Parkinson disease
Dementia in Parkinson disease
Dementia in paralysis agitans

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Dementia syndrome of Parkinson disease
PDD - [Parkinson disease dementia]
Parkinson related dementia

Exclusions from above levels

6A00 – Disorders of intellectual development
6D70 – Delirium
http://id.who.int/icd/entity/1516623224 – Neurodevelopmental disorders

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MB20.0 – Stupor
MB20.1 – Coma
MG2A – Ageing associated decline in intrinsic capacity
QE62 – Uncomplicated bereavement
QE84 – Acute stress reaction

Sibling codes

6D85.1 – Dementia due to Huntington disease
6D85.2 – Dementia due to exposure to heavy metals or other toxins
6D85.3 – Dementia due to human immunodeficiency virus
6D85.4 – Dementia due to multiple sclerosis
6D85.5 – Dementia due to prion disease
6D85.6 – Dementia due to normal pressure hydrocephalus
6D85.7 – Dementia due to injury to the head
6D85.8 – Dementia due to pellagra
6D85.9 – Dementia due to Down syndrome
6D85.Y – Dementia due to other specified diseases classified elsewhere

Foundation entity

Dementia due to Parkinson disease – http://id.who.int/icd/entity/1494928041

Allowed postcoordination axes

Part of: 6D85: Dementia due to diseases classified elsewhere › 06: Mental, behavioural or neurodevelopmental disorders