Demyelinating diseases of the central nervous system (G35-G37) ICD-10-CM
The G35–G37 section covers demyelinating diseases of the central nervous system with 27 ICD-10-CM diagnosis codes, of which 21 are billable in fiscal year 2026. The section is organized into the 3 code ranges listed below.
Code Ranges in This Section 3 ranges · 27 codes
| Code Range | Title | Codes | Billable |
|---|---|---|---|
| G35 | Multiple sclerosis (G35) | 11 | 8 |
| G36 | Other acute disseminated demyelination (G36) | 5 | 4 |
| G37 | Other demyelinating diseases of central nervous system (G37) | 11 | 9 |
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the G35–G37 Code Range
ICD-10 codes G35-G37 cover a group of disorders known as demyelinating diseases of the central nervous system, where the protective covering of nerve fibers is damaged. These codes are specifically used to classify conditions like multiple sclerosis (G35) and other less common but related acute or chronic demyelinating diseases.
This range highlights multiple sclerosis (MS) at code G35, including types such as relapsing remitting, primary progressive, and pediatric MS, along with associated symptoms like optic neuritis and central neuropathic pain. Code G36 includes acute disseminated demyelination disorders such as neuromyelitis optica (G36.0) and hemorrhagic leukoencephalitis (G36.1). The G37 series covers other specific demyelinating conditions like Schilder's disease (G37.0), central pontine myelinolysis (G37.2), and acute transverse myelitis (G37.3). It also contains codes for rarer diseases including Balo concentric sclerosis (G37.5) and the myelin oligodendrocyte glycoprotein antibody disease (G37.81). These codes help identify various demyelinating illnesses for accurate diagnosis, treatment planning, and insurance claims processing.
Questions About This Page
How many codes are in the G35-G37 range?
The G35-G37 range contains 27 ICD-10-CM diagnosis codes in FY 2026. 21 of them are billable, and the rest are category headers that organize the section.
What conditions does G35-G37 cover?
The range covers demyelinating diseases of the central nervous system. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
