G04

Clinical Information

• An inflammatory process involving the brain encephalitis) and meninges meningitis), most often produced by pathogenic organisms which invade the central nervous system, and occasionally by toxins, autoimmune disorders, and other conditions.

Details

• acute transverse myelitis (ICD-10-CM Diagnosis Code G37.3Acute transverse myelitis in demyelinating disease of central nervous system2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Applicable ToAcute transverse myelitis NOSAcute transverse myelopathyType 1 Excludesacute flaccid myelitis (G04.82)multiple sclerosis (G35)neuromyelitis optica [Devic] (G36.0)G37.3-)

• Acute transverse myelitis NOS

• Acute transverse myelopathy

• acute flaccid myelitis (G04.82)

• multiple sclerosis (G35)

• neuromyelitis optica [Devic] (G36.0)

• alcoholic encephalopathy (ICD-10-CM Diagnosis Code G31.2Degeneration of nervous system due to alcohol2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Applicable ToAlcoholic cerebellar ataxiaAlcoholic cerebellar degenerationAlcoholic cerebral degenerationAlcoholic encephalopathyDysfunction of the autonomic nervous system due to alcoholCode Alsoassociated alcoholism (F10.-)G31.2)

• Alcoholic cerebellar ataxia

• Alcoholic cerebellar degeneration

• Alcoholic cerebral degeneration

• Alcoholic encephalopathy

• Dysfunction of the autonomic nervous system due to alcohol

• associated alcoholism (F10.-)

• multiple sclerosis (ICD-10-CM Diagnosis Code G35Multiple sclerosis2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Applicable ToDisseminated multiple sclerosisGeneralized multiple sclerosisMultiple sclerosis NOSMultiple sclerosis of brain stemMultiple sclerosis of cordG35)

• Disseminated multiple sclerosis

• Generalized multiple sclerosis

• Multiple sclerosis NOS

• Multiple sclerosis of brain stem

• Multiple sclerosis of cord

• myalgic encephalomyelitis (ICD-10-CM Diagnosis Code G93.32Myalgic encephalomyelitis/chronic fatigue syndrome2023 – New Code Billable/Specific Code Applicable ToChronic fatigue syndromeME/CFSMyalgic encephalomyelitisG93.32)

• Chronic fatigue syndrome

• ME/CFS

• Myalgic encephalomyelitis

• subacute necrotizing myelitis (ICD-10-CM Diagnosis Code G37.4Subacute necrotizing myelitis of central nervous system2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code G37.4)

• toxic encephalitis (ICD-10-CM Diagnosis Code G92.8Other toxic encephalopathy2022 – New Code 2023 Billable/Specific Code Applicable ToToxic encephalitisToxic metabolic encephalopathyCode Firstpoisoning due to drug or toxin, if applicable, (T36-T65 with fifth or sixth character 1-4 or 6)Use Additionalcode for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)G92.8)

• Toxic encephalitis

• Toxic metabolic encephalopathy

• poisoning due to drug or toxin, if applicable, (T36-T65 with fifth or sixth character 1-4 or 6)

• code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

• toxic encephalopathy (ICD-10-CM Diagnosis Code G92.8Other toxic encephalopathy2022 – New Code 2023 Billable/Specific Code Applicable ToToxic encephalitisToxic metabolic encephalopathyCode Firstpoisoning due to drug or toxin, if applicable, (T36-T65 with fifth or sixth character 1-4 or 6)Use Additionalcode for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)G92.8)

• Toxic encephalitis

• Toxic metabolic encephalopathy

• poisoning due to drug or toxin, if applicable, (T36-T65 with fifth or sixth character 1-4 or 6)

• code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

• 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

• G04.30

  Acute necrotizing hemorrhagic encephalopathy 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