ICD-10-CM › G00-G99 › G20-G26 › G20.A Parkinson's disease without dyskinesia › G20.A2

Valid for claims with a date of service in the current code year.

Valid FY2024 onwards.

What has happened to this code

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

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

• Palsy > shaking
• Pill roller hand
• Parkinson's disease
• Trembling paralysis
• Tremor > Parkinson's
• Syndrome > Parkinson's
• Syndrome > parkinsonian
• Shaking palsy or paralysis
• Syndrome > paralysis agitans
• Paralysis, paralytic > agitans
• Paralysis, paralytic > shaking
• Parkinson's syndrome or tremor
• Paralysis, paralytic > trembling
• Parkinsonism > due to > Parkinson's disease
• Disease, diseased > Parkinson's > without dyskinesia > with > fluctuations
• Disease, diseased > Parkinson's > without dyskinesia > with > OFF episodes

Codes in the same group

Code	Description	Status
G20.A1	Parkinson's disease without dyskinesia, without mention of fluctuations	Valid