DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

G05 Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere

  • Header · not billable

G05 is not billable. The category heads 2 billable codes in FY2027: the 2 codes directly below it.

Index → code

  • Meningomyelitisin diseases classified elsewhere → G05.4
  • Encephalomyelitisin diseases classified elsewhere → G05.3
  • Myelitis (acute) (ascending) (childhood) (chronic) (descending) (diffuse) (disseminated) (idiopathic) (pressure) (progressive) (spinal cord) (subacute)in diseases classified elsewhere → G05.4

Where it sits

  1. Chapter 6 Diseases of the nervous system (G00-G99)
  2. G00-G09 Inflammatory diseases of the central nervous system (G00-G09)
  3. G05 Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere
Billable codes
2
Subdivisions
2
CC / MCC codes
0 / 2
HCC V28 codes
1
New FY2027
0
Index entries
14

Codes in G05

  1. G05.3
    Encephalitis and encephalomyelitis in diseases classified elsewhere
    BillableMCC
    Inclusion terms 1, Code first 1

    Inclusion terms

    • Meningoencephalitis in diseases classified elsewhere

    Code first

    • underlying disease
  2. G05.4
    Myelitis in diseases classified elsewhere
    BillableMCC182
    Inclusion terms 1

    Inclusion terms

    • Meningomyelitis in diseases classified elsewhere

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

At G05

Excludes1

  • adenoviral encephalitis, myelitis and encephalomyelitis (A85.1) A85.1
  • encephalitis, myelitis and encephalomyelitis (in) measles (B05.0) B05.0
  • enteroviral encephalitis, myelitis and encephalomyelitis (A85.0) A85.0
  • herpesviral [herpes simplex] encephalitis, myelitis and encephalomyelitis (B00.4) B00.4
  • listerial encephalitis, myelitis and encephalomyelitis (A32.12) A32.12
  • meningococcal encephalitis, myelitis and encephalomyelitis (A39.81) A39.81
  • mumps encephalitis, myelitis and encephalomyelitis (B26.2) B26.2
  • postchickenpox encephalitis, myelitis and encephalomyelitis (B01.1-) B01.1
  • rubella encephalitis, myelitis and encephalomyelitis (B06.01) B06.01
  • toxoplasmosis encephalitis, myelitis and encephalomyelitis (B58.2) B58.2
  • zoster encephalitis, myelitis and encephalomyelitis (B02.0) B02.0

Code first

  • underlying disease, such as:
  • congenital toxoplasmosis encephalitis, myelitis and encephalomyelitis (P37.1) P37.1
  • cytomegaloviral encephalitis, myelitis and encephalomyelitis (B25.8) B25.8
  • encephalitis, myelitis and encephalomyelitis (in) systemic lupus erythematosus (M32.19) M32.19
  • eosinophilic meningoencephalitis (B83.2) B83.2
  • human immunodeficiency virus [HIV] disease (B20) B20
  • poliovirus (A80.-) A80
  • suppurative otitis media (H66.01-H66.4) H66.01 H66.4
  • systemic lupus erythematosus (M32.19) M32.19
  • trichinellosis (B75) B75

Notes that also apply

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

Index entries

  • Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)trichinosis → B75 [G05.3]
  • Meningoencephalitisparasitic NEC → B89 [G05.3]
  • Encephalomyelitisin diseases classified elsewhere → G05.3
  • Meningomyelitisin diseases classified elsewhere → G05.4
  • Myelitis (acute) (ascending) (childhood) (chronic) (descending) (diffuse) (disseminated) (idiopathic) (pressure) (progressive) (spinal cord) (subacute)in diseases classified elsewhere → G05.4
  • Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)otitic NEC → H66.40 [G05.3]
  • Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)lupus erythematosus, systemic → M32.19 [G05.3]
  • Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)in (due to)poliovirus → A80.9 [G05.3]
  • Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)due tohuman immunodeficiency virus (HIV) disease → B20 [G05.3]
  • Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)in (due to)African trypanosomiasis → B56.9 [G05.3]
  • Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)in (due to)parasitic disease NEC → B89 [G05.3]
  • Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)in (due to)infectious disease NEC → B99 [G05.3]
  • Meningoencephalitisin (due to)diseases classified elsewhere → G05.3
  • Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)in (due to)systemic lupus erythematosus → M32.19 [G05.3]

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

Hierarchy