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G04.0 - Acute disseminated encephalitis and encephalomyelitis (ADEM)


The ICD 10 Code for Acute disseminated encephalitis and encephalomyelitis (ADEM) is listed as G04.0.
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: G04.0
Description: Acute disseminated encephalitis and encephalomyelitis (ADEM)
  • Excludes1: acute necrotizing hemorrhagic encephalopathy (G04.3-)
  • other noninfectious acute disseminated encephalomyelitis (noninfectious ADEM) (G04.81)
Chapter Diseases of the nervous system (G00-G99)
Block Inflammatory diseases of the central nervous system (G00-G09)
Parent G04 - Encephalitis, myelitis and encephalomyelitis
ICD-10-CM Children (deeper level / typically more specific) of G04.0:
G04.00 - Acute disseminated encephalitis and encephalomyelitis, unspecified
G04.01 - Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)
G04.02 - Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis
ICD-10-CM Siblings (same level / similar specificity) of G04.0:
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