HEREDITARY AND DEGENERATIVE DISEASES OF THE CENTRAL NERVOUS SYSTEM (330-337)
Excludes:
hepatolenticular degeneration (275.1)
multiple sclerosis (340)
other demyelinating diseases of central nervous system (341.0-341.9)
333 Other extrapyramidal disease and abnormal movement disorders
Includes:
other forms of extrapyramidal, basal ganglia, or striatopallidal disease
Excludes:
abnormal movements of head NOS (781.0)
sleep related movement disorders (327.51-327.59)
333.0: Other degenerative diseases of the basal ganglia
Atrophy or degeneration:
olivopontocerebellar [Déjérine-Thomas syndrome]
pigmentary pallidal [Hallervorden-Spatz disease] striatonigral
Parkinsonian syndrome associated with:
idiopathic orthostatic hypotension
symptomatic orthostatic hypotension
Progressive supranuclear ophthalmoplegia
Shy-Drager syndrome
333.1: Essential and other specified forms of tremor
Benign essential tremor
Familial tremor
Medication-induced postural tremor
Use additional E code to identify drug, if drug-induced
Excludes:
tremor NOS (781.0)
333.2: Myoclonus
Familial essential myoclonus
Palatal myoclonus
Use additional E code to identify drug, if drug-induced
Excludes:
Progressive myoclonic epilepsy (345.1)
Unverricht-Lundborg disease (345.1)
333.3: Tics of organic origin
Excludes:
Gilles de la Tourette's syndrome (307.23)
habit spasm (307.22)
tic NOS (307.20)
Use additional E code to identify drug, if drug-induced
333.4: Huntington's chorea
333.5: Other choreas
Hemiballism(us)
Paroxysmal choreo-athetosis
Excludes:
Sydenham's or rheumatic chorea (392.0-392.9)
Use additional E code to identify drug, if drug-induced
333.6: Genetic torsion dystonia
Dystonia:
deformans progressiva
musculorum deformans
(Schwalbe-) Ziehen-Oppenheim disease
333.7: Acquired torsion dystonia
333.8: Fragments of torsion dystonia
Use additional E code to identify drug, if drug-induced
333.9: Other and unspecified extrapyramidal diseases and abnormal movement disorders

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