G20 is the ICD-10 code for Parkinson disease. It is a three-character category that is not subdivided further. It belongs to the block G20–G26 (Extrapyramidal and movement disorders) in Chapter VI, Diseases of the nervous system.
- Code type
- Category (3 characters)
- Chapter
- VI · G00–G99
- Classification
- WHO ICD-10, 2019 version
What G20 includes
Conditions and terms that are coded here.
- Hemiparkinsonism
- Paralysis agitans
- Parkinsonism or Parkinson disease:
- NOS
- idiopathic
- primary
G20 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
G20Parkinsons sykdom
DG20Parkinsons sygdom
- DG209Parkinsons sygdom
G20Parkinsonin tauti
G20Primäres Parkinson-Syndrom
- G20.0Primäres Parkinson-Syndrom mit fehlender oder geringer Beeinträchtigung
- G20.1Primäres Parkinson-Syndrom mit mäßiger bis schwerer Beeinträchtigung
- G20.2Primäres Parkinson-Syndrom mit schwerster Beeinträchtigung
- G20.9Primäres Parkinson-Syndrom, nicht näher bezeichnet
G20Maladie de Parkinson
G20ziekte van Parkinson
Listed through more specific codes:
- G20.CParkinsonism, unspecified
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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