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ICD-10 diagnosis code

G21.9 Secondary parkinsonism, unspecified

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G21.9 is the ICD-10 code for Secondary parkinsonism, unspecified. 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

G21.9 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

SwedenICD-10-SE

G21.9Sekundär parkinsonism, ospecificerad

NorwayICD-10-NO

G21.9Uspesifisert sekundær parkinsonisme

DenmarkICD-10-DK

DG219Sekundær parkinsonisme UNS

FinlandICD-10-FI

G21.9Määrittämätön sekundaarinen parkinsonismi

GermanyICD-10-GM

G21.9Sekundäres Parkinson-Syndrom, nicht näher bezeichnet

FranceICD-10-FR

G21.9Syndrome parkinsonien secondaire, sans précision

NetherlandsICD-10-NL

G21.9secundair parkinsonisme, niet-gespecificeerd

United StatesICD-10-CM

G21.9Secondary parkinsonism, 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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