2024 ICD-10-CM Diagnosis Code A49

by

Bacterial infection of unspecified site

  • A49 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2024 edition of ICD-10-CM A49 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of A49 – other international versions of ICD-10 A49 may differ.

Type 1 Excludes

  • bacterial agents as the cause of diseases classified elsewhere (B95–B96)
  • chlamydial infection NOS (A74.9)
  • meningococcal infection NOS (A39.9)
  • rickettsial infection NOS (A79.9)
  • spirochetal infection NOS (A69.9)

The following code(s) above A49 contain annotation back-references

 that may be applicable to A49:

  • A00-B99  Certain infectious and parasitic diseases

Clinical Information

  • An acute infectious disorder caused by gram positive or gram negative bacteria. Representative examples include pneumococcal , streptococcal, salmonella and meningeal 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 percent 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. Later, you could get or spread an infection that those antibiotics cannot cure.
  • Infections and associated diseases caused by bacteria, general or unspecified.
  • Infections by bacteria, general or unspecified.

Code History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change