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Diagnosis Code

G04.81 OTHER ENCEPHALITIS AND ENCEPHALOMYELITIS


Code Information

Diagnosis Code: G04.81

Short Description: Other encephalitis and encephalomyelitis

Long Description: Other encephalitis and encephalomyelitis

The code G04.81 is VALID for claim submission

Code Classification:

  • Diseases of the nervous system (G00–G99)
    • Inflammatory diseases of the central nervous system (G00-G09)
      • Encephalitis, myelitis and encephalomyelitis (G04)
        • G04.81 Other encephalitis and encephalomyelitis

Code Version: 2022 ICD-10-CM


Synonyms

  • Allergic encephalitis
  • Allergic encephalitis
  • Allergic encephalitis
  • Allergic encephalomyelitis
  • Autoimmune acquired autonomic encephalomyelitis
  • Autoimmune cerebellar inflammation
  • Autoimmune encephalitis
  • Autoimmune encephalitis caused by N-methyl D-aspartate receptor antibody
  • Autoimmune encephalitis caused by N-methyl-D-aspartate receptor antibody
  • Autoimmune myelopathy
  • Autonomic disorder due to autoimmune encephalitis
  • Autonomic disorder due to encephalitis
  • Bickerstaff's brainstem encephalitis
  • Brainstem encephalitis
  • Brainstem encephalitis
  • Chronic lymphocytic inflammation with pontine perivascular enhancement responsive to steroids
  • Dementia due to autoimmune encephalitis
  • Dementia due to autoimmune encephalitis
  • Dementia due to Hashimoto encephalopathy
  • Encephalitis caused by human immunodeficiency virus type 2
  • Epileptic encephalopathy
  • Epileptic encephalopathy
  • Experimental allergic encephalomyelitis
  • Focal encephalitis
  • Focal encephalitis
  • Granulomatous meningoencephalomyelitis
  • Human immunodeficiency virus encephalitis
  • Human immunodeficiency virus II infection
  • Infectious mononucleosis encephalitis
  • Limbic encephalitis
  • Limbic encephalitis
  • Limbic encephalitis with contactin-associated protein-like 2 antibodies
  • Limbic encephalitis with dipeptidyl-peptidase 6 antibodies
  • Limbic encephalitis with leucine-rich glioma-inactivated 1 antibodies
  • Limbic encephalitis with neurexin-3 antibodies
  • Limbic encephalitis with N-methyl-D-aspartate receptor antibodies
  • Meningoencephalomyelitis
  • Meningomyelitis
  • Meningomyelitis
  • Non-herpetic acute limbic encephalitis
  • Post-transplant acute limbic encephalitis
  • Pyogranulomatous meningoencephalomyelitis
  • Rasmussen syndrome
  • Rasmussen syndrome
  • Rasmussen syndrome, refractory
  • Retroviridae encephalitis

References to Index of Diseases and Injuries

The code G04.81 has the following ICD-10-CM references to the Index of Diseases and Injuries
  • Inclusion Terms:
    • Noninfectious acute disseminated encephalomyelitis (noninfectious ADEM)

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
G04.81 Right Arrow 323.81 Enceph & encephlalo NEC

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code ICD-10 Description
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
G04.30 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
G04.82 Acute flaccid myelitis
G04.89 Other myelitis
G04.9 Encephalitis, myelitis and encephalomyelitis, unspecified
G04.90 Encephalitis and encephalomyelitis, unspecified
G04.91 Myelitis, unspecified

This page was last updated on: 10/1/2023

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