ICD-10 Code G23.3 - Hypomyelination with atrophy of the basal ganglia and cerebellum

ICD-10-CM Diagnosis Code G23.3

Diagnosis Code: G23.3 (Raw: G233)

Description: Hypomyelination with atrophy of the basal ganglia and cerebellum

Classification: International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM)

Fiscal Year: 2026

CMS Section 111 Status: Valid for reporting.

Overview & Clinical Details

ICD-10-CM code G23.3 is designated for Hypomyelination with atrophy of the basal ganglia and cerebellum. In medical documentation and insurance billing, this code is utilized to specify medical diagnosis for patient records, reimbursement workflows, and compliance under CMS Section 111 mandatory insurer reporting guidelines.