- G20 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2024 edition of ICD-10-CM G20 became effective on October 1, 2022.
- This is the American ICD-10-CM version of G20 – other international versions of ICD-10 G20 may differ.
ICD-10-CM G20 is grouped within Diagnostic Related Group(s):
- 056 Degenerative nervous system disorders with mcc
- 057 Degenerative nervous system disorders without mcc
Applicable To
- Hemiparkinsonism
- Idiopathic Parkinsonism or Parkinson’s disease
- Paralysis agitans
- Parkinsonism or Parkinson’s disease NOS
- Primary Parkinsonism or Parkinson’s disease
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2016 (effective 10/1/2015): No change
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
- 2024 (effective 10/1/2022): No change
Diagnosis Index entries containing back-references to G20:
- Parkinsonism > with F03.911
- with behavioral disturbance > Parkinsonism G20
- Parkinson\’s disease > with F03.911
- with behavioral disturbance > Parkinson\’s disease G20
- paralysis agitans > in (due to) F10.97
- with behavioral disturbance > paralysis agitans G20
- Parkinson\’s disease > in (due to) F10.97
- Parkinson\’s > Disease, diseased
- agitans > Paralysis, paralytic (complete) (incomplete) G83.9
- dementia > Parkinsonism (idiopathic) (primary) G20
- with behavioral disturbance > dementia G20
- pyramidopallidonigral > Syndrome