ICD-10-CM 2027 · G20-G26

Extrapyramidal and movement disorders

Part of chapter 6, diseases of the nervous system.

About G20-G26

Block G20-G26 contains 6 categories and 46 billable codes for FY2027. No codes here changed in the FY2027 update. 1 codes are MCCs and 18 are CCs when reported as secondary diagnoses.

G20Parkinson's disease

G20.AParkinson's disease without dyskinesia
G20.BParkinson's disease with dyskinesia
G20.CParkinsonism, unspecified

G21Secondary parkinsonism

G21.0Malignant neuroleptic syndrome
G21.1Other drug-induced secondary parkinsonism
G21.2Secondary parkinsonism due to other external agents
G21.3Postencephalitic parkinsonism
G21.4Vascular parkinsonism
G21.8Other secondary parkinsonism
G21.9Secondary parkinsonism, unspecified

G23Other degenerative diseases of basal ganglia

G23.0Hallervorden-Spatz disease
G23.1Progressive supranuclear ophthalmoplegia [Steele-Richardson-Olszewski]
G23.2Striatonigral degeneration
G23.3Hypomyelination with atrophy of the basal ganglia and cerebellum
G23.8Other specified degenerative diseases of basal ganglia
G23.9Degenerative disease of basal ganglia, unspecified

G24Dystonia

G24.0Drug induced dystonia
G24.1Genetic torsion dystonia
G24.2Idiopathic nonfamilial dystonia
G24.3Spasmodic torticollis
G24.4Idiopathic orofacial dystonia
G24.5Blepharospasm
G24.8Other dystonia
G24.9Dystonia, unspecified

G25Other extrapyramidal and movement disorders

G25.0Essential tremor
G25.1Drug-induced tremor
G25.2Other specified forms of tremor
G25.3Myoclonus
G25.4Drug-induced chorea
G25.5Other chorea
G25.6Drug induced tics and other tics of organic origin
G25.7Other and unspecified drug induced movement disorders
G25.8Other specified extrapyramidal and movement disorders
G25.9Extrapyramidal and movement disorder, unspecified