ICD-10-CM › G00-G99 › G20-G26 › G20 Parkinson's disease › G20.C
G20.C
Parkinsonism, unspecified
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2024 to now.
- FY2024 Added to the code set Parkinsonism, unspecified
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
- Trembling paralysis
- Tremor > Parkinson's
- Syndrome > Parkinson's
- Syndrome > parkinsonian
- Shaking palsy or paralysis
- State > confusional > acute
- Syndrome > paralysis agitans
- Paralysis, paralytic > agitans
- Paralysis, paralytic > shaking
- Parkinson's syndrome or tremor
- State > confusional > subacute
- Disorder > major neurocognitive
- Paralysis, paralytic > trembling
- Disorder > neurocognitive > major
- Syndrome > brain > acute or subacute
- Delirium, delirious > with > dementia
- Reaction > organic, acute or subacute
- Disorder > neurocognitive > major > in
- Disorder > neurocognitive > major > in > with > violent behavior
- Disorder > neurocognitive > major > in > with > combative behavior
- Disorder > neurocognitive > major > in > with > aggressive behavior
- Parkinsonism
- Hemiparkinsonism
- Parkinsonism > dementia
- Dementia > with > Parkinsonism
- Paralysis, paralytic > agitans
- Pyramidopallidonigral syndrome
- Syndrome > pyramidopallidonigral
- Dementia > in > paralysis agitans
- Parkinsonism > dementia > with behavioral disturbance
- Dementia > with > Parkinsonism > with behavioral disturbance
- Dementia > in > paralysis agitans > with behavioral disturbance
Codes in the same group
| Code | Description | Status |
|---|---|---|
| G20.A | Parkinson's disease without dyskinesia | Not billable |
| G20.B | Parkinson's disease with dyskinesia | Not billable |