G98Header code — not billable

Other disorders of nervous system not elsewhere classified

Chapter
6. Diseases of the nervous system
Category
G98
Effective date
October 1, 2026

Related codes in category G98

G98.0Neurogenic arthritis, not elsewhere classifiedYesG98.8Other disorders of nervous systemYes

Frequently asked questions

What is ICD-10 code G98?

G98 is an ICD-10-CM diagnosis code for Other disorders of nervous system not elsewhere classified.

Is G98 a billable code?

No. G98 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is G98 in?

G98 falls under Chapter 6: Diseases of the nervous system.

When did G98 become effective?

G98 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to G98?

G98 belongs to category G98, which includes 2 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.