ICD-10 · PDGM grouping
G37 Other demyelinating diseases of central nervous system
All 9 codes in the G37 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
Codes in family
9
Can lead a claim
9
Cannot lead a claim
0
What CMS assigns to G37
All 9 codes group to Neuro Rehabilitation. All 9 count toward the Demyelinating Diseases of the Central Nervous System comorbidity subgroup. Every code can lead a claim.
- Demyelinating Diseases of the Central Nervous System
Every code in G37
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| G37.0 | Diffuse sclerosis of central nervous system | Can lead a claim | B | Demyelinating Diseases of the Central Nervous System |
| G37.1 | Central demyelination of corpus callosum | Can lead a claim | B | Demyelinating Diseases of the Central Nervous System |
| G37.2 | Central pontine myelinolysis | Can lead a claim | B | Demyelinating Diseases of the Central Nervous System |
| G37.3 | Acute transverse myelitis in demyelinating disease of central nervous systemCMS: Acute transverse myelitis in demyelinating disease of cnsl | Can lead a claim | B | Demyelinating Diseases of the Central Nervous System |
| G37.4 | Subacute necrotizing myelitis of central nervous system | Can lead a claim | B | Demyelinating Diseases of the Central Nervous System |
| G37.5 | Concentric sclerosis [Balo] of central nervous system | Can lead a claim | B | Demyelinating Diseases of the Central Nervous System |
| G37.8 Other specified demyelinating diseases of central nervous system | ||||
| G37.81 | Myelin oligodendrocyte glycoprotein antibody disease | Can lead a claim | B | Demyelinating Diseases of the Central Nervous System |
| G37.89 | Other specified demyelinating diseases of central nervous systemCMS: Other specified demyelinating diseases of cnsl | Can lead a claim | B | Demyelinating Diseases of the Central Nervous System |
| G37.9 | Demyelinating disease of central nervous system, unspecified | Can lead a claim | B | Demyelinating Diseases of the Central Nervous System |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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