G04.0

Acute disseminated encephalitis and encephalomyelitis (ADEM)

Non-billable header

G04.0 is a non-billable header code. Use one of the more specific codes below.

Inclusion terms

Not coded here — never report together with this code.

acute necrotizing hemorrhagic encephalopathy (G04.3-)
other noninfectious acute disseminated encephalomyelitis (noninfectious ADEM) (G04.81)
encephalopathy NOS (G93.40) (from G04)

Not included here — may be reported together when both conditions exist.

certain conditions originating in the perinatal period (P04-P96) (from G04)
certain infectious and parasitic diseases (A00-B99) (from G04)
complications of pregnancy, childbirth and the puerperium (O00-O9A) (from G04)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) (from G04)
endocrine, nutritional and metabolic diseases (E00-E88) (from G04)
injury, poisoning and certain other consequences of external causes (S00-T88) (from G04)
neoplasms (C00-D49) (from G04)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from G04)
acute transverse myelitis (G37.3) (from G04)
alcoholic encephalopathy (G31.2) (from G04)
multiple sclerosis (G35-) (from G04)
myalgic encephalomyelitis (G93.32) (from G04)
subacute necrotizing myelitis (G37.4) (from G04)
toxic encephalitis (G92.8) (from G04)
toxic encephalopathy (G92.8) (from G04)

G04.00Acute disseminated encephalitis and encephalomyelitis, unspecifiedBillable
G04.01Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)Billable
G04.02Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitisBillable

G04.1Tropical spastic paraplegiaBillable
G04.2Bacterial meningoencephalitis and meningomyelitis, not elsewhere classifiedBillable
G04.3Acute necrotizing hemorrhagic encephalopathyHeader
G04.8Other encephalitis, myelitis and encephalomyelitisHeader
G04.9Encephalitis, myelitis and encephalomyelitis, unspecifiedHeader