-
ICD-10-CM Codes
›
-
G00-G99
›
-
G00-G09
›
-
G04-
›
-
2023 ICD-10-CM Diagnosis Code G04.00
2023 ICD-10-CM Diagnosis Code G04.00
Acute disseminated encephalitis and encephalomyelitis, unspecified
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
- G04.00 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- Short description: Acute disseminated encephalitis and encephalomyelitis, unsp
- The 2023 edition of ICD-10-CM G04.00 became effective on October 1, 2022.
- This is the American ICD-10-CM version of G04.00 - other international versions of ICD-10 G04.00 may differ.
The following code(s) above
G04.00 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
- Applicable To annotations, or
- Code Also annotations, or
- Code First annotations, or
- Excludes1 annotations, or
- Excludes2 annotations, or
- Includes annotations, or
- Note annotations, or
- Use Additional annotations
that may be applicable to
G04.00:
- G00-G99
2023 ICD-10-CM Range G00-G99
Diseases of the nervous systemType 2 Excludes- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- G04
ICD-10-CM Diagnosis Code G04
Encephalitis, myelitis and encephalomyelitis
2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
Includes- acute ascending myelitis
- meningoencephalitis
- meningomyelitis
Type 2 Excludes- 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
ICD-10-CM Diagnosis Code G04.0
Acute disseminated encephalitis and encephalomyelitis (ADEM)
2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
Type 1 Excludes- acute necrotizing hemorrhagic encephalopathy (G04.3-)
- other noninfectious acute disseminated encephalomyelitis (noninfectious ADEM) (G04.81)
- Encephalitis, acute disseminated
- Encephalomyelitis, post infectious
- Infectious acute disseminated encephalomyelitis
- Postinfectious encephalitis
ICD-10-CM G04.00 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
- 023 Craniotomy with major device implant or acute complex cns principal diagnosis with mcc or chemotherapy implant or epilepsy with neurostimulator
- 024 Craniotomy with major device implant or acute complex cns principal diagnosis without mcc
- 097 Non-bacterial infection of nervous system except viral meningitis with mcc
- 098 Non-bacterial infection of nervous system except viral meningitis with cc
- 099 Non-bacterial infection of nervous system except viral meningitis without cc/mcc
Convert G04.00 to ICD-9-CM
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
- 2023 (effective 10/1/2022): No change
- Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) G04.90
ICD-10-CM Diagnosis Code G04.90
Encephalitis and encephalomyelitis, unspecified
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
Applicable To- Ventriculitis (cerebral) NOS
- acute A86 - see also Encephalitis, viral
ICD-10-CM Diagnosis Code A86
Unspecified viral encephalitis
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
Applicable To- Viral encephalomyelitis NOS
- Viral meningoencephalitis NOS
- disseminated, acute G04.00
- Encephalomyelitis G04.90 - see also Encephalitis
ICD-10-CM Diagnosis Code G04.90
Encephalitis and encephalomyelitis, unspecified
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
Applicable To- Ventriculitis (cerebral) NOS
- Meningoencephalomyelitis - see also Meningoencephalitis
- acute NEC (viral) A86
ICD-10-CM Diagnosis Code A86
Unspecified viral encephalitis
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
Applicable To- Viral encephalomyelitis NOS
- Viral meningoencephalitis NOS
ICD-10-CM Codes Adjacent To G04.00
G01 Meningitis in bacterial diseases classified elsewhere
G02 Meningitis in other infectious and parasitic diseases classified elsewhere
G03 Meningitis due to other and unspecified causes
G03.0 Nonpyogenic meningitis
G03.2 Benign recurrent meningitis [Mollaret]
G03.8 Meningitis due to other specified causes
G03.9 Meningitis, unspecified
G04 Encephalitis, myelitis and encephalomyelitis
G04.0 Acute disseminated encephalitis and encephalomyelitis (ADEM)
G04.00
Acute disseminated encephalitis and encephalomyelitis, unspecified
G04.01 Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)
G04.02 Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis
G04.1 Tropical spastic paraplegia
G04.2 Bacterial meningoencephalitis and meningomyelitis, not elsewhere classified
G04.3 Acute necrotizing hemorrhagic encephalopathy
G04.31 Postinfectious acute necrotizing hemorrhagic encephalopathy
G04.32 Postimmunization acute necrotizing hemorrhagic encephalopathy
G04.39 Other acute necrotizing hemorrhagic encephalopathy
G04.8 Other encephalitis, myelitis and encephalomyelitis
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
