Secondary Parkinsonism

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ICD10 Diagnosis
Dx: Secondary Parkinsonism
ICD10 code: G21.9
Pre-ICD10 counterpart: none assigned
Charlson/ALERT Scale: none
APACHE Como Component: none
APACHE Acute Component: none
Start Date:
Stop Date:
Data Dependencies(Reports/Indicators/Data Elements): No results
External ICD10 Documentation

This diagnosis is a part of ICD10 collection.

  • SMW
    • 2019-01-01
    • 2999-12-31
    • G21.9
  • Cargo


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Additional Info

Also code cause if known

Secondary parkinsonism results in symptoms similar to Parkinson disease and can be caused by drugs, a different nervous system disorder, or another illness.

Secondary parkinsonism causes include:

  • Brain injury
  • Diffuse Lewy body disease (a type of dementia)
  • Encephalitis
  • HIV/AIDS
  • Meningitis
  • Multiple system atrophy
  • Progressive supranuclear palsy
  • Stroke
  • Wilson disease
  • Brain damage caused by anesthesia drugs (such as during surgery)
  • Carbon monoxide poisoning
  • Drugs used to treat mental disorders or nausea including:
    • Fluphenazine.
    • Chlorpromazine.
    • Promazine.
    • Pimozide.
    • Haloperidol.
    • Perphenazine
    • Lithium
  • Mercury poisoning and other chemical poisonings
  • Overdoses of narcotics
  • MPTP (a contaminant in some street drugs)

Alternate ICD10s to consider coding instead or in addition

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