ICD   PCS   Disclaimer
ICD-10-CM-2022 Diagnosis Codes Overview
ICD-10-CM-2022 > 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)
benign myalgic encephalomyelitis (G93.3)
multiple sclerosis (G35)
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

 

ICD-10-CM-2022 Code Search Engine and PCS-2022 Code Search Engine