All ICD10 Codes

G23.3

Billable
ChapterG00–G99
Ranksubcategory
Official Description

Hypomyelination with atrophy of the basal ganglia and cerebellum

Metadata & Insights
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 6: Diseases of the Nervous System (G00-G99).

Instructional Notes

Includes
  • H-ABC
  • TUBB4A-related neurologic disorders
General instructions are available for the parent sections:
View CH6 NotesView G23 Notes

Clinical Hierarchy

BillableHas subcodes
CH6Diseases of the nervous system (G00-G99)
G20-G26Extrapyramidal and movement disorders (G20-G26)
G23Other degenerative diseases of basal ganglia
G23.3Hypomyelination with atrophy of the basal ganglia and cerebellumBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to G23.3:

categoryG23
Other degenerative diseases of basal ganglia
View context instructions
chapterCH6
Diseases of the nervous system (G00-G99)
View context instructions

Code History

  • FY 2023: This code replaced G23.8 (Other specified degenerative diseases of basal ganglia)

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 056
Degenerative Nervous System Disorders with MCC
DRG 057
Degenerative Nervous System Disorders without MCC

Cross Reference

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