ICD-10 Code G11.0 – Congenital Nonprogressive Ataxia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G11.0 – Congenital nonprogressive ataxia
What it is
This code identifies a congenital ataxia present from birth or early life that does not progressively worsen. It generally refers to a stable coordination disorder affecting balance, gait, and fine motor control.
Clinical signs
Clinical features may include unsteady gait, poor coordination, and delayed motor milestones. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly documents congenital nonprogressive ataxia or a stable ataxic disorder present since childhood. You may also use it when the provider describes a nonprogressive cerebellar coordination problem without evidence of progression. Check documentation if the neurologic diagnosis is unclear.
Do not use for
Do not use this code for acquired ataxia, progressive hereditary ataxias, or ataxia due to another identified neurologic condition. If the chart describes only nonspecific gait instability, check documentation.
Coding tip
Confirm that the provider documents both congenital onset and nonprogressive course before assigning G11.0.