G23

Non-billable

Other degenerative diseases of basal ganglia

G23 is the ICD-10-CM code for Other degenerative diseases of basal ganglia. It is a non-billable category code — use a more specific child code such as G23.0 for billing.

Status
Header (non-billable)
Chapter
G00-G99
Subcodes
6
Edition
FY2026

G00-G99 Diseases of the nervous system

Excludes2 — not included here

  • multi-system degeneration of the autonomic nervous system (G90.3)

Frequently asked questions

What is ICD-10 code G23?
G23 is the ICD-10-CM code for "Other degenerative diseases of basal ganglia". It falls under G00-G99 Diseases of the nervous system.
Is G23 a billable code?
No — G23 is a non-billable header code. Use a more specific child code (such as G23.0) for billing.
What are the subcodes of G23?
G23 has 6 more specific child codes, including G23.0, G23.1, G23.2.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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