ICD-10 Code G11.19 – Other early-onset cerebellar ataxia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G11.19 – Other early-onset cerebellar ataxia
What it is
G11.19 identifies a hereditary or otherwise specified cerebellar ataxia that begins early in life and does not fit a more specific subtype. Use it when documentation states early-onset cerebellar ataxia without a better-defined diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Typical findings include impaired coordination, unsteady gait, balance problems, and other cerebellar signs that start in childhood or early adulthood.
When to use this code
Use this code when the provider documents early-onset cerebellar ataxia and the record does not name a specific genetic or syndromic form. It is also appropriate when the condition is described as “other” or unspecified within the early-onset cerebellar ataxia category. Check documentation if the note suggests a different ataxia type or a broader neurologic disorder.
Do not use for
Do not use G11.19 for acquired ataxia, drug-induced coordination problems, or cerebellar ataxia with a clearly documented specific subtype. If the chart names another inherited ataxia, code that diagnosis instead.
Coding tip
Confirm that “early-onset” is documented and that no more specific ataxia code applies before assigning G11.19.