2022 ICD-10-CM Code A28

Other zoonotic bacterial diseases, not elsewhere classified

Version 2021

Not Valid for Submission

ICD-10:A28
Short Description:Other zoonotic bacterial diseases, not elsewhere classified
Long Description:Other zoonotic bacterial diseases, not elsewhere classified

Code Classification

  • Certain infectious and parasitic diseases (A00–B99)
    • Certain zoonotic bacterial diseases (A20-A28)
      • Other zoonotic bacterial diseases, not elsewhere classified (A28)

A28 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 zoonotic bacterial 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 zoonotic bacterial diseases, not elsewhere classified

Non-specific codes like A28 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 zoonotic bacterial diseases, not elsewhere classified:

  • BILLABLE CODE - Use A28.0 for Pasteurellosis
  • BILLABLE CODE - Use A28.1 for Cat-scratch disease
  • BILLABLE CODE - Use A28.2 for Extraintestinal yersiniosis
  • BILLABLE CODE - Use A28.8 for Other specified zoonotic bacterial diseases, not elsewhere classified
  • BILLABLE CODE - Use A28.9 for Zoonotic bacterial disease, unspecified

Information for Patients


Bacterial Infections

Bacteria are living things that have only one cell. Under a microscope, they look like balls, rods, or spirals. They are so small that a line of 1,000 could fit across a pencil eraser. Most bacteria won't hurt you - less than 1% of the different types make people sick. Many are helpful. Some bacteria help to digest food, destroy disease-causing cells, and give the body needed vitamins. Bacteria are also used in making healthy foods like yogurt and cheese.

But infectious bacteria can make you ill. They reproduce quickly in your body. Many give off chemicals called toxins, which can damage tissue and make you sick. Examples of bacteria that cause infections include Streptococcus, Staphylococcus, and E. coli.

Antibiotics are the usual treatment. When you take antibiotics, follow the directions carefully. Each time you take antibiotics, you increase the chances that bacteria in your body will learn to resist them causing antibiotic resistance. Later, you could get or spread an infection that those antibiotics cannot cure.

NIH: National Institute of Allergy and Infectious Diseases


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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)