G21.2 is the ICD-10 code for Secondary parkinsonism due to other external agents. It is a four-character subcategory of G21 (Secondary parkinsonism), the most specific level in the WHO edition. It belongs to the block G20–G26 (Extrapyramidal and movement disorders) in Chapter VI, Diseases of the nervous system.
- Code type
- Subcategory (4 characters)
- Chapter
- VI · G00–G99
- Classification
- WHO ICD-10, 2019 version
Coding notes
- Use additional external cause code (Chapter XX), if desired, to identify external agent.
G21.2 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
G21.2Sekundær parkinsonisme som har annen ytre årsak
DG212Sekundær parkinsonisme forårsaget af andet eksternt agens
G21.2Muun ulkoisen syyn aiheuttama sekundaarinen parkinsonismi
G21.2Parkinson-Syndrom durch sonstige exogene Agenzien
G21.2Syndrome parkinsonien secondaire dû à d'autres agents externes
G21.2secundair parkinsonisme door overige uitwendige-agentia
G21.2Secondary parkinsonism due to other external agents
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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