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G35.B

Non-billable

Primary progressive multiple sclerosis

G35.B is the ICD-10-CM code for Primary progressive multiple sclerosis. It is a non-billable category code — use a more specific child code such as G35.B0 for billing.

Status
Header (non-billable)
Chapter
G00-G99
Parent
G35
Subcodes
3
Edition
FY2026

G00-G99 Diseases of the nervous system

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code G35.B?
G35.B is the ICD-10-CM code for "Primary progressive multiple sclerosis". It falls under G00-G99 Diseases of the nervous system.
Is G35.B a billable code?
No — G35.B is a non-billable header code. Use a more specific child code (such as G35.B0) for billing.
What are the subcodes of G35.B?
G35.B has 3 more specific child codes, including G35.B0, G35.B1, G35.B2.

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

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