G11.9Billable
Hereditary ataxia, unspecified
- Chapter
- 6. Diseases of the nervous system
- Category
- G11
- Effective date
- October 1, 2026
Related codes in category G11
G11Hereditary ataxiaG11.0Congenital nonprogressive ataxiaYesG11.1Early-onset cerebellar ataxiaG11.10Early-onset cerebellar ataxia, unspecifiedYesG11.11Friedreich ataxiaYesG11.19Other early-onset cerebellar ataxiaYesG11.2Late-onset cerebellar ataxiaYesG11.3Cerebellar ataxia with defective DNA repairYesG11.4Hereditary spastic paraplegiaYesG11.5Hypomyelination - hypogonadotropic hypogonadism - hypodontiaYesG11.6Leukodystrophy with vanishing white matter diseaseYesG11.8Other hereditary ataxiasYes
Frequently asked questions
What is ICD-10 code G11.9?
G11.9 is an ICD-10-CM diagnosis code for Hereditary ataxia, unspecified.
Is G11.9 a billable code?
Yes. G11.9 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is G11.9 in?
G11.9 falls under Chapter 6: Diseases of the nervous system.
When did G11.9 become effective?
G11.9 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to G11.9?
G11.9 belongs to category G11, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.