2022 ICD-10-CM Diagnosis Code G04.82

Acute flaccid myelitis

    2022 - New Code Billable/Specific Code
  • G04.82 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • ICD-10-CM G04.82 is a new 2022 ICD-10-CM code that became effective on October 1, 2021.
  • This is the American ICD-10-CM version of G04.82 - other international versions of ICD-10 G04.82 may differ.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as G04.82. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • transverse myelitis (
    ICD-10-CM Diagnosis Code G37.3

    Acute transverse myelitis in demyelinating disease of central nervous system

      2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    Applicable To
    • Acute transverse myelitis NOS
    • Acute transverse myelopathy
    Type 1 Excludes
    • acute flaccid myelitis (G04.82)
    • multiple sclerosis (G35)
    • neuromyelitis optica [Devic] (G36.0)
    G37.3
    )
The following code(s) above G04.82 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 G04.82:
  • G00-G99
    2022 ICD-10-CM Range G00-G99

    Diseases of the nervous system

    Type 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)
    Diseases of the nervous system
  • G04
    ICD-10-CM Diagnosis Code G04

    Encephalitis, myelitis and encephalomyelitis

      2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
    Includes
    • acute ascending myelitis
    • meningoencephalitis
    • meningomyelitis
    Type 1 Excludes
    Type 2 Excludes
    • 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)
    Encephalitis, myelitis and encephalomyelitis
  • G04.8
    ICD-10-CM Diagnosis Code G04.8

    Other encephalitis, myelitis and encephalomyelitis

      2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
    Code Also
    Other encephalitis, myelitis and encephalomyelitis
ICD-10-CM G04.82 is grouped within Diagnostic Related Group(s) (MS-DRG v39.0):
  • 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
Code History
  • 2022 (effective 10/1/2021): New code
Code annotations containing back-references to G04.82:
  • Type 1 Excludes: G37.3
    , A80
    ICD-10-CM Diagnosis Code G37.3

    Acute transverse myelitis in demyelinating disease of central nervous system

      2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    Applicable To
    • Acute transverse myelitis NOS
    • Acute transverse myelopathy
    Type 1 Excludes
    • acute flaccid myelitis (G04.82)
    • multiple sclerosis (G35)
    • neuromyelitis optica [Devic] (G36.0)
    ICD-10-CM Diagnosis Code A80

    Acute poliomyelitis

      2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • acute flaccid myelitis (G04.82)

Diagnosis Index entries containing back-references to G04.82:
  • Myelitis (acute) (ascending) (childhood) (chronic) (descending) (diffuse) (disseminated) (idiopathic) (pressure) (progressive) (spinal cord) (subacute) G04.91
    - see also Encephalitis
    ICD-10-CM Diagnosis Code G04.91

    Myelitis, unspecified

      2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    • flaccid G04.82

ICD-10-CM Codes Adjacent To G04.82
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
G04.30 …… unspecified
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
G04.81 Other encephalitis and encephalomyelitis
G04.82 Acute flaccid myelitis
G04.89 Other myelitis
G04.9 Encephalitis, myelitis and encephalomyelitis, unspecified
G04.90 Encephalitis and encephalomyelitis, unspecified
G04.91 Myelitis, unspecified
G05 Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere
G05.3 Encephalitis and encephalomyelitis in diseases classified elsewhere
G05.4 Myelitis in diseases classified elsewhere
G06 Intracranial and intraspinal abscess and granuloma
G06.0 Intracranial abscess and granuloma
G06.1 Intraspinal abscess and granuloma

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.