ICD-10-CM Code A83.2

Eastern equine encephalitis

Version 2021 Billable Code

Valid for Submission

A83.2 is a billable code used to specify a medical diagnosis of eastern equine encephalitis. The code is valid for the fiscal year 2021 for the submission of HIPAA-covered transactions. The ICD-10-CM code A83.2 might also be used to specify conditions or terms like eastern equine encephalitis virus infection or eastern equine encephalitis virus neuroinvasive disease or eastern equine encephalitis virus non-neuroinvasive disease.

ICD-10:A83.2
Short Description:Eastern equine encephalitis
Long Description:Eastern equine encephalitis

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code A83.2 are found in the index:


Synonyms

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

  • Eastern equine encephalitis virus infection
  • Eastern equine encephalitis virus neuroinvasive disease
  • Eastern equine encephalitis virus non-neuroinvasive disease

Clinical Information

  • ENCEPHALITIS VIRUS EASTERN EQUINE-. a species of alphavirus causing encephalomyelitis in equidae and humans. the virus ranges along the atlantic seaboard of the united states and canada and as far south as the caribbean mexico and parts of central and south america. infections in horses show a mortality of up to 90 percent and in humans as high as 80 percent in epidemics.
  • ENCEPHALOMYELITIS EASTERN EQUINE-. a form of arboviral encephalitis primarily affecting equines endemic to eastern regions of north america. the causative organism encephalomyelitis virus eastern equine may be transmitted to humans via the bite of aedes mosquitoes. clinical manifestations include the acute onset of fever headache altered mentation and seizures followed by coma. the condition is fatal in up to 50% of cases. recovery may be marked by residual neurologic deficits and epilepsy. from joynt clinical neurology 1996 ch26 pp9 10

Convert A83.2 to ICD-9

  • 062.2 - East equine encephalitis

Code Classification

  • Certain infectious and parasitic diseases (A00–B99)
    • Viral and prion infections of the central nervous system (A80-A89)
      • Mosquito-borne viral encephalitis (A83)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021

Information for Patients


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

  • Cerebral spinal fluid (CSF) collection (Medical Encyclopedia)
  • CSF analysis (Medical Encyclopedia)
  • Encephalitis (Medical Encyclopedia)
  • Japanese Encephalitis Vaccine: What You Need to Know (Centers for Disease Control and Prevention)
  • Subacute sclerosing panencephalitis (Medical Encyclopedia)

[Learn More]

Viral Infections

Viruses are very tiny germs. They are made of genetic material inside of a protein coating. Viruses cause familiar infectious diseases such as the common cold, flu and warts. They also cause severe illnesses such as HIV/AIDS, smallpox, and Ebola.

Viruses are like hijackers. They invade living, normal cells and use those cells to multiply and produce other viruses like themselves. This can kill, damage, or change the cells and make you sick. Different viruses attack certain cells in your body such as your liver, respiratory system, or blood.

When you get a virus, you may not always get sick from it. Your immune system may be able to fight it off.

For most viral infections, treatments can only help with symptoms while you wait for your immune system to fight off the virus. Antibiotics do not work for viral infections. There are antiviral medicines to treat some viral infections. Vaccines can help prevent you from getting many viral diseases.

  • ECHO virus (Medical Encyclopedia)
  • Enterovirus D68 (Medical Encyclopedia)
  • Hand-foot-mouth disease (Medical Encyclopedia)
  • Herpangina (Medical Encyclopedia)
  • Molluscum contagiosum (Medical Encyclopedia)
  • Parainfluenza (Medical Encyclopedia)
  • Roseola (Medical Encyclopedia)
  • Zika virus disease (Medical Encyclopedia)

[Learn More]