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G11.19

Other early-onset cerebellar ataxia

Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 11 never code together
G11code
Excludes2
  • cerebral palsy (G80.-)G80.-
  • hereditary and idiopathic neuropathy (G60.-)G60.-
  • metabolic disorders (E70-E88)E70-E88
G00-G99chapter
Excludes2
  • certain conditions originating in the perinatal period (P04-P96)P04-P96
  • certain infectious and parasitic diseases (A00-B99)A00-B99
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
  • endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
  • injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
  • neoplasms (C00-D49)C00-D49
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 4
G11.19code
Inclusion terms
  • Early-onset cerebellar ataxia with essential tremor
  • Early-onset cerebellar ataxia with myoclonus [Hunt's ataxia]
  • Early-onset cerebellar ataxia with retained tendon reflexes
  • X-linked recessive spinocerebellar ataxia
Index entries leading here 6
  • Ataxia, ataxy, ataxic R27.0
    • cerebellar (hereditary) G11.9
      • with
        • myoclonus [Hunt's ataxia] G11.19
        • retained tendon reflexes G11.19
        • essential tremor G11.19
    • Hunt's G11.19
    • spinocerebellar, X-linked recessive G11.19
  • Dyssynergia
    • cerebellaris myoclonica (Hunt's ataxia) G11.19
  • Disease, diseased — see also Syndrome
    • Hunt's (herpetic geniculate ganglionitis) (neuralgia) B02.21
      • dyssynergia cerebellaris myoclonica G11.19
  • Hunt's
    • disease or syndrome (herpetic geniculate ganglionitis) B02.21
      • dyssynergia cerebellaris myoclonica G11.19
  • Syndrome — see also Disease
    • Hunt's (herpetic geniculate ganglionitis) (neuralgia) B02.21
      • dyssynergia cerebellaris myoclonica G11.19
  • Ramsay-Hunt disease or syndrome B02.21
    • meaning dyssynergia cerebellaris myoclonica G11.19
Alongside this code 2 same parent — G11.1
Medications 1

MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.

Additional references
AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

CMS22HCC72 CMS28HCC200 ESRD21HCC72 ESRD24HCC72

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This code

Billable
yes
Code set
FY2026
Parent
G11.1
Block
G10-G14
Siblings
2

Present FY2024–FY2027.