6D85.0
Dementia due to Parkinson disease
Demência devida à doença de Parkinson
CategoryDefinition
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.
Diagnostic Criteria
- All diagnostic requirements for Dementia are met.
- Dementia is presumed to be attributable to underlying Parkinson Disease, as demonstrated by neuropsychological test data, neuroimaging data, medical tests, family history, and/or clinical history.
- Dementia Due to Parkinson Disease develops among individuals with idiopathic Parkinson disease and is often characterized by impairment in attention, memory, executive and visuo-spatial functions.
- Behavioural and psychiatric symptoms such as changes in affect, apathy and hallucinations may also be present.
- Onset is insidious and typically occurs one year of more after the development of parkinsonian motor symptoms. The course of dementia often follows that of underlying Parkinson’s disease (e.g., if Parkinson’s Disease gradually worsens, Dementia may gradually worsen).
Note: A diagnosis of 8A00.0 Parkinson Disease should also be assigned.
Index Terms
Dementia due to Parkinson diseaseDementia in paralysis agitansPDD - [Parkinson disease dementia]Dementia syndrome of Parkinson diseaseDementia in Parkinson diseaseParkinson related dementia