ICD-10-CM Code A81

Atypical virus infections of central nervous system

Version 2020 Non-Billable Code

Not Valid for Submission

A81 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of atypical virus infections of central nervous system. The code is NOT valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10:A81
Short Description:Atypical virus infections of central nervous system
Long Description:Atypical virus infections of central nervous system

Consider the following ICD-10 codes with a higher level of specificity:

  • A81.0 - Creutzfeldt-Jakob disease
  • A81.00 - Creutzfeldt-Jakob disease, unspecified
  • A81.01 - Variant Creutzfeldt-Jakob disease
  • A81.09 - Other Creutzfeldt-Jakob disease
  • A81.1 - Subacute sclerosing panencephalitis
  • A81.2 - Progressive multifocal leukoencephalopathy
  • A81.8 - Other atypical virus infections of central nervous system
  • A81.81 - Kuru
  • A81.82 - Gerstmann-Straussler-Scheinker syndrome
  • A81.83 - Fatal familial insomnia
  • A81.89 - Other atypical virus infections of central nervous system
  • A81.9 - Atypical virus infection of central nervous system, unspecified

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code A81:

Includes

Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
  • diseases of the central nervous system caused by prions

Use Additional Code

Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
  • code to identify:
  • dementia with behavioral disturbance F02.81
  • dementia without behavioral disturbance F02.80

Code Classification

  • Certain infectious and parasitic diseases (A00–B99)
    • Viral and prion infections of the central nervous system (A80-A89)
      • Atypical virus infections of central nervous system (A81)

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

Information for Patients


Neurologic Diseases

The brain, spinal cord, and nerves make up the nervous system. Together they control all the workings of the body. When something goes wrong with a part of your nervous system, you can have trouble moving, speaking, swallowing, breathing, or learning. You can also have problems with your memory, senses, or mood.

There are more than 600 neurologic diseases. Major types include

  • Diseases caused by faulty genes, such as Huntington's disease and muscular dystrophy
  • Problems with the way the nervous system develops, such as spina bifida
  • Degenerative diseases, where nerve cells are damaged or die, such as Parkinson's disease and Alzheimer's disease
  • Diseases of the blood vessels that supply the brain, such as stroke
  • Injuries to the spinal cord and brain
  • Seizure disorders, such as epilepsy
  • Cancer, such as brain tumors
  • infections, such as meningitis

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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.


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