Alphabetic Index FY2027

G11

Hereditary ataxia

FY2027Chapter 6: Diseases of the nervous system/G10–G14 Systemic atrophies primarily affecting the central nervous system

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

G11 is a non-billable ICD-10-CM code category for hereditary ataxia. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are G11.0 Congenital nonprogressive ataxia, G11.1 Early-onset cerebellar ataxia, G11.2 Late-onset cerebellar ataxia, G11.3 Cerebellar ataxia with defective DNA repair and 5 more. Its coding notes include 11 Excludes2 entries.

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

This code
  • cerebral palsy (G80.-)
  • hereditary and idiopathic neuropathy (G60.-)
  • metabolic disorders (E70-E88)
Also from chapter/block level (8 notes)
Inherited from Chapter 6 Diseases of the nervous system
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

More specific codes under G11 9