| ICD-10-CM-2023 > G00-G99 > G00-G09 > G04 |
G00-G09 | Inflammatory diseases of the central nervous system | |
G04 | Encephalitis, myelitis and encephalomyelitis | |
Incl.: | acute ascending myelitis meningoencephalitis meningomyelitis | |
Excl1.: | encephalopathy NOS (G93.40) | |
Excl2.: | acute transverse myelitis (G37.3-) alcoholic encephalopathy (G31.2) multiple sclerosis (G35) myalgic encephalomyelitis (G93.32) subacute necrotizing myelitis (G37.4) toxic encephalitis (G92.8) toxic encephalopathy (G92.8) | |
G04.0 | Acute disseminated encephalitis and encephalomyelitis (ADEM) | |
Excl1.: | acute necrotizing hemorrhagic encephalopathy (G04.3-) other noninfectious acute disseminated encephalomyelitis (noninfectious ADEM) (G04.81) | |
G04.00 | Acute disseminated encephalitis and encephalomyelitis, unspecified | |
G04.01 | Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM) | |
Excl1.: | post chickenpox encephalitis (B01.1) post measles encephalitis (B05.0) post measles myelitis (B05.1) | |
G04.02 | Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis | |
Info: | Encephalitis, post immunization Encephalomyelitis, post immunization | |
Use add'l | code to identify the vaccine (T50.A-, T50.B-, T50.Z-) | |
G04.1 | Tropical spastic paraplegia | |
G04.2 | Bacterial meningoencephalitis and meningomyelitis, not elsewhere classified | |
G04.3 | Acute necrotizing hemorrhagic encephalopathy | |
Excl1.: | acute disseminated encephalitis and encephalomyelitis (G04.0-) | |
G04.30 | Acute necrotizing hemorrhagic encephalopathy, unspecified | |
G04.31 | Postinfectious acute necrotizing hemorrhagic encephalopathy | |
G04.32 | Postimmunization acute necrotizing hemorrhagic encephalopathy | |
Use add'l | code to identify the vaccine (T50.A-, T50.B-, T50.Z-) | |
G04.39 | Other acute necrotizing hemorrhagic encephalopathy | |
Use add'l | underlying etiology, if applicable | |
G04.8 | Other encephalitis, myelitis and encephalomyelitis | |
Use add'l | any associated seizure (G40.-, R56.9) | |
G04.81 | Other encephalitis and encephalomyelitis | |
Info: | Noninfectious acute disseminated encephalomyelitis (noninfectious ADEM) | |
G04.82 | Acute flaccid myelitis | |
Excl1.: | transverse myelitis (G37.3) | |
G04.89 | Other myelitis | |
G04.9 | Encephalitis, myelitis and encephalomyelitis, unspecified | |
G04.90 | Encephalitis and encephalomyelitis, unspecified | |
Info: | Ventriculitis (cerebral) NOS | |
G04.91 | Myelitis, unspecified | |
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