G35.C0
✓ Billable
Secondary progressive multiple sclerosis, unspecified
ICD-10-CM · FY2026 · Diseases of the Nervous System
Code
G35.C0
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Nervous System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code G35.C0?
ICD-10-CM code G35.C0 represents Secondary progressive multiple sclerosis, unspecified. It is a billable diagnosis code in the Diseases of the Nervous System chapter, effective October 1, 2025 – September 30, 2026.
Is G35.C0 billable?
Yes. G35.C0 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is G35.C0 in?
G35.C0 belongs to the Diseases of the Nervous System chapter (G00–G99) of ICD-10-CM.
Related codes in the G35 category
G35
Multiple sclerosis
Non-billable
G35.A
Relapsing-remitting multiple sclerosis
Billable
G35.B
Primary progressive multiple sclerosis
Non-billable
G35.C
Secondary progressive multiple sclerosis
Non-billable
G35.D
Multiple sclerosis, unspecified
Billable
G35.B0
Primary progressive multiple sclerosis, unspecified
Billable
G35.B1
Active primary progressive multiple sclerosis
Billable
G35.B2
Non-active primary progressive multiple sclerosis
Billable
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