ICD-10-CM Code Z20.828

Contact with and (suspected) exposure to other viral communicable diseases

Version 2020 Replaced Code Billable Code

Valid for Submission

Z20.828 is a billable code used to specify a medical diagnosis of contact with and (suspected) exposure to other viral communicable diseases. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code Z20.828 might also be used to specify conditions or terms like exposure to anogenital herpes simplex virus, exposure to coronavirus infection, exposure to cytomegalovirus, exposure to ebola virus, exposure to herpes simplex virus, exposure to human poliovirus, etc

Short Description:Contact w and exposure to oth viral communicable diseases
Long Description:Contact with and (suspected) exposure to other viral communicable diseases

Replaced Code

This code was replaced in the 2020 ICD-10 code set with the code(s) listed below. The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2019. This code was replaced for the FY 2020 (October 1, 2019 - September 30, 2020).

  • Z20.821 - Contact with and (suspected) exposure to Zika virus

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 Z20.828 are found in the index:


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

  • Exposure to anogenital Herpes simplex virus
  • Exposure to coronavirus infection
  • Exposure to cytomegalovirus
  • Exposure to Ebola virus
  • Exposure to herpes simplex virus
  • Exposure to Human poliovirus
  • Exposure to Influenza A virus subtype H1N1
  • Exposure to Influenzavirus
  • Exposure to Measles virus
  • Exposure to meningitis
  • Exposure to Mumps virus
  • Exposure to severe acute respiratory syndrome coronavirus
  • Exposure to Variola virus
  • Exposure to viral disease
  • Exposure to viral meningitis

Convert Z20.828 to ICD-9

  • V01.79 - Viral dis contact NEC (Approximate Flag)

Code Classification

  • Factors influencing health status and contact with health services (Z00–Z99)
    • Persons with potential health hazards related to communicable diseases (Z20-Z29)
      • Contact w and exposure to communicable diseases (Z20) (suspected)

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

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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