ICD-10-CM > G00-G99 > G20-G26 G20-G26 Extrapyramidal and movement disorders Codes G20Parkinson's diseaseG21Secondary parkinsonismG23Other degenerative diseases of basal gangliaG24DystoniaG25Other extrapyramidal and movement disordersG26Extrapyramidal and movement disorders in diseases classified elsewhere