G11
⚠ Non-billable (Header)Hereditary ataxia
Diseases of the nervous system (G00-G99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
⚠️ Excludes2
directMay be coded together if both conditions coexist
- • cerebral palsy (G80.-)
- • hereditary and idiopathic neuropathy (G60.-)
- • metabolic disorders (E70-E88)
Child Codes (9)
G11.0Congenital nonprogressive ataxiaG11.1Early-onset cerebellar ataxiaG11.2Late-onset cerebellar ataxiaG11.3Cerebellar ataxia with defective DNA repairG11.4Hereditary spastic paraplegiaG11.5Hypomyelination - hypogonadotropic hypogonadism - hypodontiaG11.6Leukodystrophy with vanishing white matter diseaseG11.8Other hereditary ataxiasG11.9Hereditary ataxia, unspecified
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CodeG11
BillableNo — Header code
CategoryDiseases of the nervous system (G00-G99)
Excludes10 rule(s)
Excludes23 note(s)
Child codes9
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)