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G04 - Encephalitis, myelitis and encephalomyelitis


The ICD 10 Code for Encephalitis, myelitis and encephalomyelitis is listed as G04.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field Value
Diagnosis Code: G04
Description: Encephalitis, myelitis and encephalomyelitis
  • Includes: acute ascending myelitis
  • meningoencephalitis
  • meningomyelitis
  • Excludes1: encephalopathy NOS (G93.40)
  • Excludes2: acute transverse myelitis (G37.3-)
  • alcoholic encephalopathy (G31.2)
  • benign myalgic encephalomyelitis (G93.3)
  • multiple sclerosis (G35)
  • subacute necrotizing myelitis (G37.4)
  • toxic encephalitis (G92)
  • toxic encephalopathy (G92)
Chapter Diseases of the nervous system (G00-G99)
ICD-10-CM Children (deeper level / typically more specific) of G04:
G04.0 - Acute disseminated encephalitis and encephalomyelitis (ADEM)
G04.1 - Tropical spastic paraplegia
G04.2 - Bacterial meningoencephalitis and meningomyelitis, not elsewhere classified
G04.3 - Acute necrotizing hemorrhagic encephalopathy
G04.8 - Other encephalitis, myelitis and encephalomyelitis
G04.9 - Encephalitis, myelitis and encephalomyelitis, unspecified