G35.B1Billable

Active primary progressive multiple sclerosis

Chapter
6. Diseases of the nervous system
Category
G35
Effective date
October 1, 2026

Related codes in category G35

Frequently asked questions

What is ICD-10 code G35.B1?

G35.B1 is an ICD-10-CM diagnosis code for Active primary progressive multiple sclerosis.

Is G35.B1 a billable code?

Yes. G35.B1 is billable and specific enough to be used on a claim.

What ICD-10-CM chapter is G35.B1 in?

G35.B1 falls under Chapter 6: Diseases of the nervous system.

When did G35.B1 become effective?

G35.B1 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to G35.B1?

G35.B1 belongs to category G35, which includes 10 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.