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G11

G11: Hereditary ataxia

Non-billable headerICD-10-CM

G11 is a non-billable header ICD-10-CM code for hereditary ataxia. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes2: not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

  • cerebral palsy (G80.-)
  • hereditary and idiopathic neuropathy (G60.-)
  • metabolic disorders (E70-E88)

Other codes that can never be billed with G11

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • D82Immunodeficiency associated with other major defects
  • E31Polyglandular dysfunction
  • G80Cerebral palsy
  • Q85Phakomatoses, not elsewhere classified
  • R26Abnormalities of gait and mobility
  • R27Other lack of coordination

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead G11

9 child codes. Green means billable.

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.