2022 ICD-10-CM Code B33

Other viral diseases, not elsewhere classified

Version 2021

Not Valid for Submission

Short Description:Other viral diseases, not elsewhere classified
Long Description:Other viral diseases, not elsewhere classified

Code Classification

  • Certain infectious and parasitic diseases (A00–B99)
    • Other viral diseases (B25-B34)
      • Other viral diseases, not elsewhere classified (B33)

B33 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of other viral diseases, not elsewhere classified. The code is not specific and is NOT valid for the year 2022 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding for Other viral diseases, not elsewhere classified

Non-specific codes like B33 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for other viral diseases, not elsewhere classified:

  • BILLABLE CODE - Use B33.0 for Epidemic myalgia
  • BILLABLE CODE - Use B33.1 for Ross River disease
  • NON-BILLABLE CODE - B33.2 for Viral carditis
  • BILLABLE CODE - Use B33.20 for Viral carditis, unspecified
  • BILLABLE CODE - Use B33.21 for Viral endocarditis
  • BILLABLE CODE - Use B33.22 for Viral myocarditis
  • BILLABLE CODE - Use B33.23 for Viral pericarditis
  • BILLABLE CODE - Use B33.24 for Viral cardiomyopathy
  • BILLABLE CODE - Use B33.3 for Retrovirus infections, not elsewhere classified
  • BILLABLE CODE - Use B33.4 for Hantavirus (cardio)-pulmonary syndrome [HPS] [HCPS]
  • BILLABLE CODE - Use B33.8 for Other specified viral diseases

Information for Patients

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, Ebola, and COVID-19.

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.

[Learn More in MedlinePlus]

Code History

  • 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 (First year ICD-10-CM implemented into the HIPAA code set)