ICD-10-CM › G00-G99 › G20-G26 › G20 Parkinson's disease › G20.A

G20.A

Parkinson's disease without dyskinesia

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2024 onwards. It has never been valid for submission on its own.

Submit one of these 2 more specific codes instead:

  • G20.A1 Parkinson's disease without dyskinesia, without mention of fluctuations
  • G20.A2 Parkinson's disease without dyskinesia, with fluctuations

What has happened to this code

Every change the publisher made, from 2024 to now.

  1. FY2024 Added to the code set Parkinson's disease without dyskinesia

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from G20 Parkinson's disease

Use additional code

  • code, if applicable, to identify:
  • dementia with anxiety (F02.84, F02.A4, F02.B4, F02.C4)
  • dementia with behavioral disturbance (F02.81-, F02.A1-, F02.B1-, F02.C1-)
  • dementia with mood disturbance (F02.83, F02.A3, F02.B3, F02.C3)
  • dementia with psychotic disturbance (F02.82, F02.A2, F02.B2, F02.C2)
  • dementia without behavioral disturbance (F02.80, F02.A0, F02.B0, F02.C0)
  • mild neurocognitive disorder due to known physiological condition (F06.7-)

Also known as

  • Hemiparkinsonism
  • Idiopathic Parkinsonism or Parkinson's disease
  • Paralysis agitans
  • Primary Parkinsonism or Parkinson's disease

Codes in the same group

CodeDescriptionStatus
G20.B Parkinson's disease with dyskinesia Not billable
G20.C Parkinsonism, unspecified Valid