G35.B0: Primary progressive multiple sclerosis, unspecified

New code · FY2026

Billable: use this code on claims.

• New code, effective October 1, 2025 (FY2026).

Code breakdown

Medicare coverage

G35.B0 is listed as a covered diagnosis in 47 Medicare billing and coding articles:

• A53060 Billing and Coding: Ophthalmology: Extended Ophthalmoscopy and Fundus Photography
• A54095 Billing and Coding: Nerve Conduction Studies and Electromyography
• A54969 Billing and Coding: Nerve Conduction Studies and Electromyography
• A55639 Billing and Coding: Chemotherapy Agents for Non-Oncologic Conditions
• A56232 Billing and Coding: Foot Care
• A56551 Billing and Coding: Visual Fields Testing
• A56612 Billing and Coding: CT of the Head
• A56619 Billing and Coding: Nerve Conduction Studies and Electromyography
• A56621 Billing and Coding: Swallowing Studies for Dysphagia
• A56680 Billing and Coding: Routine Foot Care

…and 37 more. Check the coverage tool for your CPT code.

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All FY2026 ICD-10-CM changes

ICD-10-CM codes and descriptions are from the CMS and NCHS code files. Coverage is from the CMS Medicare Coverage Database billing and coding articles.