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ICD-10-CM Codes Browse (Tabular) Diagnostic External Drug Neoplasm

G04.02 – Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis

Overview

Coding Notes

Active
Billable, valid for HIPAA-covered transactions

Additional

code to identify the vaccine (T50.A-, T50.B-, T50.Z-)

Applicable To

Encephalitis, post immunization
Encephalomyelitis, post immunization

GEM Conversion to ICD-9 CM

Fs: 10000 – Encephalitis and encephalomyelitis following immunization procedures
Fs: 10000 – Myelitis following immunization procedures

MDC / MS-DRG Reference

CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITH MCC OR CHEMOTHERAPY IMPLANT OR EPILEPSY WITH NEUROSTIMULATOR
CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITHOUT MCC
NON-BACTERIAL INFECTION OF NERVOUS SYSTEM EXCEPT VIRAL MENINGITIS WITH MCC
NON-BACTERIAL INFECTION OF NERVOUS SYSTEM EXCEPT VIRAL MENINGITIS WITH CC
NON-BACTERIAL INFECTION OF NERVOUS SYSTEM EXCEPT VIRAL MENINGITIS WITHOUT CC/MCC

Back Reference of Diagnostic Codes

Complication (s) (from) (of)
vaccination T88.1
encephalitis or encephalomyelitis G04.02
myelitis G04.02
Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) G04.90
acute See also Encephalitis, viral A86
disseminated G04.00
postimmunization (postvaccination) G04.02
due to
smallpox inoculation G04.02
following vaccination or other immunization procedure G04.02
postimmunization G04.02
postvaccinal G04.02
Encephalomyelitis See also Encephalitis G04.90
acute disseminated G04.00
postimmunization G04.02
postvaccinal G04.02
Encephalopathy (acute) G93.40
in (due to) (with)
vaccination G04.02
Leukoencephalitis G04.81
acute hemorrhagic (subacute) G36.1
postimmunization or postvaccinal G04.02
Leukoencephalopathy See also Encephalopathy G93.49
postimmunization and postvaccinal G04.02
Meningoencephalomyelitis See also Meningoencephalitis
acute NEC (viral) A86
disseminated G04.00
postimmunization or postvaccination G04.02
postimmunization or postvaccination G04.02
Myelitis (acute) (ascending) (childhood) (chronic) (descending) (diffuse) (disseminated) (idiopathic) (pressure) (progressive) (spinal cord) (subacute) See also Encephalitis G04.91
postimmunization G04.02
postvaccinal G04.02

Sibling Codes

Acute disseminated encephalitis and encephalomyelitis, unspecified
Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)

Parent Sibling Codes

Acute disseminated encephalitis and encephalomyelitis (ADEM)
Tropical spastic paraplegia
Bacterial meningoencephalitis and meningomyelitis, not elsewhere classified
Acute necrotizing hemorrhagic encephalopathy
Other encephalitis, myelitis and encephalomyelitis
Encephalitis, myelitis and encephalomyelitis, unspecified

View in Tabular

Code Title
G00-G99 Diseases of the nervous system (G00-G99)
G00-G09 Inflammatory diseases of the central nervous system (G00-G09)
G04 Encephalitis, myelitis and encephalomyelitis
G04.0 Acute disseminated encephalitis and encephalomyelitis (ADEM)
G04.02 Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis
Use Additional
code to identify the vaccine (T50.A-, T50.B-, T50.Z-)

Applicable to
Encephalitis, post immunization
Encephalomyelitis, post immunization