G37.9
Billable codeDemyelinating disease of central nervous system, unspecified
The ICD-10 code for demyelinating disease of central nervous system, unspecified is G37.9.
Clinical notes
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Clinically isolated syndromes
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This code describes an unspecified presentation. If the medical record documents a more specific detail (e.g. laterality, type, or affected site), a more specific sibling code should be used instead — see Related codes below.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- G37.0Diffuse sclerosis of central nervous system
- G37.1Central demyelination of corpus callosum
- G37.2Central pontine myelinolysis
- G37.3Acute transverse myelitis in demyelinating disease of central nervous system
- G37.4Subacute necrotizing myelitis of central nervous system
- G37.5Concentric sclerosis [Balo] of central nervous system
- G37.8Other specified demyelinating diseases of central nervous systemnon-billable header
- G37.9Demyelinating disease of central nervous system, unspecified
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 3419Approximate match
Associated MS-DRGs
G37.9 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.