G11.10
BillableEarly-onset cerebellar ataxia, unspecified
HCC Category Mapping
V28HCC 200 — Cerebellar Ataxia and Other Degenerative Diseases of Nervous System
0.262V24HCC 72 — Spinal Cord Disorders/Injuries
0.464ESRDHCC 72 — Spinal Cord Disorders/Injuries
0.000What This Code Means
Early-onset cerebellar ataxia is a disorder affecting balance and coordination that begins in childhood or early adulthood with an unspecified underlying cause.
Coding Tips
- •Use this code only when the specific type of early-onset ataxia cannot be determined
- •Document age of onset and progression pattern to support medical necessity
Clinical Significance
Early-onset cerebellar ataxia, unspecified represents a progressive coordination disorder beginning in childhood or early adulthood with an undetermined specific subtype. This code signals a chronic degenerative neurological condition requiring lifelong specialist management, genetic counseling, and rehabilitation services.
Documentation Requirements
- ✓Age of onset documented as childhood or early adulthood
- ✓Progressive nature of ataxia symptoms documented
- ✓Neurological examination findings (cerebellar signs, gait ataxia, dysmetria)
- ✓Genetic testing results if performed (even if negative or pending)
- ✓Brain MRI findings showing cerebellar atrophy if applicable
- ✓Statement that specific ataxia subtype cannot be determined
Commonly Confused Codes
G11.11 — Friedreich ataxia: the most common early-onset ataxia with specific genetic testing availableG11.0 — Congenital nonprogressive ataxia: stable from birth, unlike progressive early-onset formsG11.2 — Late-onset cerebellar ataxia: onset in adulthood rather than childhoodG11.19 — Other early-onset cerebellar ataxia: use when a specific type is identified but does not have its own code
Code Hierarchy
└G11Hereditary ataxia└G11.1Early-onset cerebellar ataxia└G11.10Early-onset cerebellar ataxia, unspecified
└G11.10Early-onset cerebellar ataxia, unspecified