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  6. 2024 ICD-10-CM Code G05.3

2024 ICD-10-CM Diagnosis Code G05.3

Encephalitis and encephalomyelitis in diseases classified elsewhere

ICD-10-CM Code:
G05.3
ICD-10 Code for:
Encephalitis and encephalomyelitis in diseases classd elswhr
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:

Code Classification

  • Diseases of the nervous system
    (G00–G99)
    • Inflammatory diseases of the central nervous system
      (G00-G09)
      • Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere
        (G05)

G05.3 is a billable diagnosis code used to specify a medical diagnosis of encephalitis and encephalomyelitis in diseases classified elsewhere. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • African trypanosomiasis
  • African trypanosomiasis
  • African trypanosomiasis
  • Amebic encephalitis
  • Amebic encephalitis
  • Amebic infection of central nervous system
  • Amebic infection of central nervous system
  • Arenavirus encephalitis
  • Arenavirus encephalitis
  • Arenavirus encephalitis
  • Bacterial encephalitis
  • Bacterial infectious disease of brain
  • Borrelia infection of central nervous system
  • Coenurosis
  • Cysticercosis of brain
  • Cysticercosis of central nervous system
  • Dementia due to paraneoplastic encephalitis
  • Disease due to Hantavirus
  • Disorder of spinal cord co-occurrent with human immunodeficiency virus infection
  • Echinococcus granulosus infection
  • Encephalitic tic disorder
  • Encephalitis caused by Borrelia species
  • Encephalitis caused by Coenurus cerebralis
  • Encephalitis caused by Echinococcus granulosus
  • Encephalitis caused by human immunodeficiency virus type 1
  • Encephalitis caused by Leptospira species
  • Encephalitis caused by Nocardia
  • Encephalitis caused by Schistosoma
  • Encephalitis caused by Schistosoma
  • Encephalitis caused by Schistosoma
  • Encephalitis caused by Schistosoma
  • Encephalitis caused by Schistosoma haematobium
  • Encephalitis caused by Schistosoma japonicum
  • Encephalitis caused by Schistosoma mansoni
  • Encephalitis caused by Taenia solium
  • Encephalitis caused by Trypanosoma brucei
  • Encephalitis caused by Trypanosoma brucei
  • Encephalitis caused by Trypanosoma brucei
  • Encephalitis caused by Trypanosoma brucei gambiense
  • Encephalitis caused by Trypanosoma brucei rhodesiense
  • Encephalitis due to protozoa
  • Encephalitis with AIDS
  • Encephalomyelitis caused by bacterium
  • Encephalomyelitis caused by bacterium
  • Encephalomyelitis caused by bacterium
  • Encephalomyelitis caused by Coxiella burnetii
  • Encephalomyelitis caused by Neisseria meningitidis
  • Encephalomyelitis with AIDS
  • Encephalopathy with AIDS
  • Encephalopathy with AIDS
  • Fungal encephalitis
  • Fungal infection of brain
  • Fungal infection of cerebrum
  • Fungal ventriculitis
  • Human immunodeficiency virus encephalitis
  • Human immunodeficiency virus I infection
  • Infection by Coenurosis cerebralis
  • Infection by Multiceps multiceps
  • Infection by Trypanosoma gambiense
  • Infection caused by Junin virus
  • Infection caused by Lassa virus
  • Infection caused by Machupo virus
  • Infection caused by Tropheryma
  • Infection causing encephalomyelitis
  • Infection causing encephalomyelitis
  • Infection causing encephalomyelitis
  • Infection of brain caused by Form family Dematiaceae
  • Infection of central nervous system caused by Echinococcus
  • Infective ventriculitis
  • Junin virus encephalitis
  • Lassa virus encephalitis
  • Limbic encephalitis
  • Machupo virus encephalitis
  • Malabsorption due to infective agent
  • Meningococcal encephalitis
  • Mycobacterial encephalomyelitis
  • Myelitis caused by bacterium
  • Myelitis caused by bacterium
  • Myelitis caused by bacterium
  • Myelitis co-occurrent with human immunodeficiency virus infection
  • Myelitis with AIDS
  • Myelopathy due to neoplastic disease
  • Myelopathy with AIDS
  • Neuro - Whipple's disease
  • Paraneoplastic encephalitis
  • Paraneoplastic encephalomyelitis
  • Paraneoplastic limbic encephalitis
  • Phaeohyphomycosis
  • Primary amebic encephalitis
  • Primary encephalitis
  • Retroviridae encephalitis
  • Schistosoma encephalomyelitis
  • Schistosoma haematobium infection
  • Schistosoma japonicum infection
  • Schistosoma mansoni infection
  • Sin Nombre virus encephalitis
  • Trypanosomiasis with encephalitis
  • Trypanosomiasis with encephalitis
  • Trypanosomiasis with encephalitis
  • Trypanosomiasis with encephalitis
  • Ventriculitis of the brain
  • Whipple's disease

Clinical Classification

Clinical Information

  • Limbic Encephalitis

    a paraneoplastic syndrome marked by degeneration of neurons in the limbic system. clinical features include hallucinations, loss of episodic memory; anosmia; ageusia; temporal lobe epilepsy; dementia; and affective disturbance (depression). circulating anti-neuronal antibodies (e.g., anti-hu; anti-yo; anti-ri; and anti-ma2) and small cell lung carcinomas or testicular carcinoma are frequently associated with this syndrome.

  • Cerebral Phaeohyphomycosis

    cns infections caused by neurotropic dematiaceous fungi that contain melanin in their cell walls. the infections often result in brain abscess; encephalitis; and meningitis in patients who are often immunocompetent. the common causative fungi include members cladophialophora bantiana, exophiala dermatitidis, rhinocladiella mackenziei, and ochroconis gallopavum. r. mackenziei infection is seen almost exclusively in patients from the middle east.

  • Phaeohyphomycosis

    opportunistic infections caused by the dematiaceous (darkly pigmented) mitosporic fungi of alternaria, bipolaris, cladosporium, curvularia, and exophiala. these fungi have pigmented hyphae due to melanin in the cell wall. the initial subcutaneous cyst from the infection can become systemic and spread rapidly to renal, pulmonary and cerebral systems (see cerebral phaeohyphomycosis) in an immunocompromised host.

  • Limbic Encephalitis

    a rare disorder characterized by degenerative changes in the limbic area of the brain. causes include infections and autoimmune conditions; it may also manifest as a paraneoplastic syndrome, most often caused by small cell lung carcinoma. signs and symptoms include behavioral changes, hallucinations and dementia.

  • Schistosoma Japonicum Infection

    an infection that is caused by schistosoma japonicum.

  • Schistosoma Mansoni Infection

    an infection that is caused by schistosoma mansoni.

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Meningoencephalitis in diseases classified elsewhere

Code First

Code First
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
  • underlying disease

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10-CM Code Edits are applicable to this code:

  • Manifestation diagnoses - Manifestation codes describe the manifestation of an underlying disease, not the disease itself, and therefore should not be used as a principal diagnosis.

Convert G05.3 to ICD-9-CM

  • ICD-9-CM Code: 323.41 - Ot encph/mye ot inf else
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education


Encephalitis

Encephalitis is an inflammation of the brain. Usually the cause is a viral infection, but bacteria can also cause it. It can be mild or severe. Most cases are mild. You may have flu-like symptoms. With a mild case, you may just need rest, plenty of fluids, and a pain reliever.

Severe cases need immediate treatment. Symptoms of severe cases include:

  • Severe headache
  • Sudden fever
  • Drowsiness
  • Vomiting
  • Confusion
  • Seizures

In babies, additional symptoms may include constant crying, poor feeding, body stiffness, and bulging in the soft spots of the skull.

Severe cases may require a stay in the hospital. Treatments include oral and intravenous (IV) medicines to reduce inflammation and treat infection. Patients with breathing difficulties may need artificial respiration. Some people may need physical, speech, and occupational therapy once the illness is under control.

NIH: National Institute of Neurological Disorders and Stroke


[Learn More in MedlinePlus]

Spinal Cord Diseases

Your spinal cord is a bundle of nerves that runs down the middle of your back. It carries signals back and forth between your body and your brain. It is protected by your vertebrae, which are the bone disks that make up your spine. If you have an accident that damages the vertebrae or other parts of the spine, this can also injure the spinal cord. Other spinal cord problems include:

  • Tumors
  • Infections such as meningitis and polio
  • Inflammatory diseases
  • Autoimmune diseases
  • Degenerative diseases such as amyotrophic lateral sclerosis and spinal muscular atrophy

Symptoms vary but might include pain, numbness, loss of sensation and muscle weakness. These symptoms can occur around the spinal cord, and also in other areas such as your arms and legs. Treatments often include medicines and surgery.


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.