G23.3: Hypomyelination with atrophy of the basal ganglia and cerebellum
G23.3 is the billable ICD-10-CM diagnosis code for Hypomyelination with atrophy of the basal ganglia and cerebellum. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code G23.3?
G23.3 is the ICD-10-CM diagnosis code for Hypomyelination with atrophy of the basal ganglia and cerebellum. It belongs to category G23 (Other degenerative diseases of basal ganglia).
Is G23.3 a billable code?
Yes. G23.3 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does G23.3 belong to?
G23.3 is part of ICD-10-CM category G23 — Other degenerative diseases of basal ganglia, which has 12 billable codes.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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