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)
334 Spinocerebellar disease
Excludes:
olivopontocerebellar degeneration (333.0)
peroneal muscular atrophy (356.1)
334.0: Friedreich's ataxia
334.1: Hereditary spastic paraplegia
334.2: Primary cerebellar degeneration
Cerebellar ataxia:
Marie's
Sanger-Brown
Dyssynergia cerebellaris myoclonica
Primary cerebellar degeneration:
NOS
hereditary
sporadic
334.3: Other cerebellar ataxia
Cerebellar ataxia NOS
Use additional E code to identify drug, if drug-induced
334.4: Cerebellar ataxia in diseases classified elsewhere
Code first underlying disease, as:
alcoholism (303.0-303.9)
myxedema (244.0-244.9)
neoplastic disease (140.0-239.9)
334.8: Other spinocerebellar diseases
Ataxia-telangiectasia [Louis-Bar syndrome]
Corticostriatal-spinal degeneration
334.9: Spinocerebellar disease, unspecified
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