DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

G37 Other demyelinating diseases of central nervous system

  • Header · not billable

G37 is not billable. The category heads 9 billable codes in FY2027, grouped under 8 subdivisions.

Index → code

  • Flatau-Schilder disease → G37.0
  • Schilder (-Flatau) disease → G37.0
  • Myelinolysis, pontine, central → G37.2

Where it sits

  1. Chapter 6 Diseases of the nervous system (G00-G99)
  2. G35-G37 Demyelinating diseases of the central nervous system (G35-G37)
  3. G37 Other demyelinating diseases of central nervous system
Billable codes
9
Subdivisions
8
CC / MCC codes
8 / 1
HCC V28 codes
9
New FY2027
0
Index entries
28

Codes in G37

  1. G37.0
    Diffuse sclerosis of central nervous system
    BillableCC198
    Inclusion terms 2, Excludes1 1

    Inclusion terms

    • Periaxial encephalitis
    • Schilder's disease

    Excludes1

    • X linked adrenoleukodystrophy (E71.52-) E71.52
  2. G37.1
    Central demyelination of corpus callosum
    BillableCC198
  3. G37.2
    Central pontine myelinolysis
    BillableCC198
  4. G37.3
    Acute transverse myelitis in demyelinating disease of central nervous system
    BillableCC182
    Inclusion terms 2, Excludes1 3

    Inclusion terms

    • Acute transverse myelitis NOS
    • Acute transverse myelopathy

    Excludes1

    • acute flaccid myelitis (G04.82) G04.82
    • multiple sclerosis (G35-) G35
    • neuromyelitis optica [Devic] (G36.0) G36.0
  5. G37.4
    Subacute necrotizing myelitis of central nervous system
    BillableMCC182
  6. G37.5
    Concentric sclerosis [Balo] of central nervous system
    BillableCC198
  7. G37.8
    Other specified demyelinating diseases of central nervous system
    Header
  8. G37.81
    Myelin oligodendrocyte glycoprotein antibody disease
    BillableCC198
    Inclusion terms 1, Code also 3

    Inclusion terms

    • MOG antibody disease

    Code also

    • associated manifestations, if known, such as:
    • noninfectious acute disseminated encephalomyelitis (G04.81) G04.81
    • neuromyelitis optica (G36.0) G36.0
  9. G37.89
    Other specified demyelinating diseases of central nervous system
    BillableCC198
  10. G37.9
    Demyelinating disease of central nervous system, unspecified
    BillableCC198
    Inclusion terms 1

    Inclusion terms

    • Clinically isolated syndromes

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

Notes that also apply

Chapter 6 instructions (Excludes2 8): printed on the chapter 6 page.

Index entries

  • Flatau-Schilder disease → G37.0
  • Schilder (-Flatau) disease → G37.0
  • Marchiafava (-Bignami) syndrome or disease → G37.1
  • Myelinolysis, pontine, central → G37.2
  • Balo's disease (concentric sclerosis) → G37.5
  • MOGAD (myelin oligodendrocyte glycoprotein antibody disease) → G37.81
  • Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)periaxial → G37.0
  • Encephalopathy (acute)centrolobar progressive (Schilder) → G37.0
  • Sclerosis, scleroticdiffuse (brain) (spinal cord) → G37.0
  • Demyelination, demyelinizationcorpus callosum (central) → G37.1
  • Encephalopathy (acute)demyelinating callosal → G37.1
  • Myelitis (acute) (ascending) (childhood) (chronic) (descending) (diffuse) (disseminated) (idiopathic) (pressure) (progressive) (spinal cord) (subacute)transverse (in demyelinating diseases of central nervous system) → G37.3
  • Myelopathy (spinal cord)transverse, acute → G37.3
  • Myelitis (acute) (ascending) (childhood) (chronic) (descending) (diffuse) (disseminated) (idiopathic) (pressure) (progressive) (spinal cord) (subacute)necrotizing, subacute → G37.4
  • Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)periaxialis (concentrica) (diffuse) → G37.5
  • Sclerosis, scleroticconcentric (Balo) → G37.5
  • Disease, diseasedMOG antibody → G37.81
  • Disease, diseasedmyelin oligodendrocyte glycoprotein antibody → G37.81
  • Degeneration, degenerativemyelin, central nervous system → G37.9
  • Demyelination, demyelinizationcentral nervous system → G37.9
  • Disease, diseaseddemyelinating, demyelinizating (nervous system) → G37.9
  • Sclerosis, scleroticbrain (generalized) (lobular) → G37.9
  • Syndromeclinically isolated → G37.9
  • Syndromedemyelinating → G37.9
  • Sclerosis, scleroticbrain (generalized) (lobular)diffuse → G37.0
  • Greenfield's diseasemeaningconcentric sclerosis (encephalitis periaxialis concentrica) → G37.5
  • Demyelination, demyelinizationcentral nervous systemspecified NEC → G37.89
  • Disease, diseaseddemyelinating, demyelinizating (nervous system)specified NEC → G37.89

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy