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G04.01 - Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)


The ICD 10 Code for Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM) is listed as G04.01.
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: G04.01
Description: Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)
  • Excludes1: post chickenpox encephalitis (B01.1)
  • post measles encephalitis (B05.0)
  • post measles myelitis (B05.1)
Diagnostic Related Groups
(MS-DRG v30.0)
023 - Cranio W Major Dev Impl/acute Complex Cns Pdx W Mcc Or Chemo Implant
024 - Cranio W Major Dev Impl/acute Complex Cns Pdx W/o Mcc
025 - Craniotomy & Endovascular Intracranial Procedures W Mcc
026 - Craniotomy & Endovascular Intracranial Procedures W Cc
027 - Craniotomy & Endovascular Intracranial Procedures W/o Cc/mcc
097 - Non-bacterial Infect Of Nervous Sys Exc Viral Meningitis W Mcc
098 - Non-bacterial Infect Of Nervous Sys Exc Viral Meningitis W Cc
099 - Non-bacterial Infect Of Nervous Sys Exc Viral Meningitis W/o Cc/mcc
Chapter Diseases of the nervous system (G00-G99)
Block Inflammatory diseases of the central nervous system (G00-G09)
Parent G04.0 - Acute disseminated encephalitis and encephalomyelitis (ADEM)
ICD-9-CM Diagnosis Codes General Equivalence Mappings (GEMS):
ICD 9 Dx Code: 323.61 - Infectious acute disseminated encephalomyelitis (ADEM) (approximate)
ICD-10-CM Siblings (same level / similar specificity) of G04.01:
G04.00 - Acute disseminated encephalitis and encephalomyelitis, unspecified
G04.02 - Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis