2022 ICD-10-CM Diagnosis Code A49.0

Staphylococcal infection, unspecified site

    2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
  • A49.0 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2022 edition of ICD-10-CM A49.0 became effective on October 1, 2021.
  • This is the American ICD-10-CM version of A49.0 - other international versions of ICD-10 A49.0 may differ.
The following code(s) above A49.0 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to A49.0:
  • A00-B99
    2022 ICD-10-CM Range A00-B99

    Certain infectious and parasitic diseases

    Includes
    • diseases generally recognized as communicable or transmissible
    Type 1 Excludes
    • certain localized infections - see body system-related chapters
    Type 2 Excludes
    • carrier or suspected carrier of infectious disease (Z22.-)
    • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
    • infectious and parasitic diseases specific to the perinatal period (P35-P39)
    • influenza and other acute respiratory infections (J00-J22)
    Use Additional
    • code to identify resistance to antimicrobial drugs (Z16.-)
    Certain infectious and parasitic diseases
  • A49
    ICD-10-CM Diagnosis Code A49

    Bacterial infection of unspecified site

      2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
    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)
    Bacterial infection of unspecified site
Clinical Information
  • Infections with bacteria of the genus staphylococcus.
  • Infections with bacteria of the genus staphylococcus; includes staphylococcal pneumonia, staph skin infections, furunculosis, carbuncle, impetigo, ritter disease, scalded skin syndrome, etc.
  • Staph is short for staphylococcus, a type of bacteria. There are over 30 types, but staphylococcus aureus causes most staph infections (pronounced "staff infections"), including
    • skin infections
    • pneumonia
    • food poisoning
    • toxic shock syndrome
    • blood poisoning (bacteremia)
    skin infections are the most common. They can look like pimples or boils. They may be red, swollen and painful, and sometimes have pus or other drainage. They can turn into impetigo, which turns into a crust on the skin, or cellulitis, a swollen, red area of skin that feels hot.anyone can get a staph skin infection. You are more likely to get one if you have a cut or scratch, or have contact with a person or surface that has staph bacteria. The best way to prevent staph is to keep hands and wounds clean. Most staph skin infections are easily treated with antibiotics or by draining the infection. Some staph bacteria such as mrsa (methicillin-resistant staphylococcus aureus) are resistant to certain antibiotics, making infections harder to treat.
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
ICD-10-CM Codes Adjacent To A49.0
A48.0 Gas gangrene
A48.1 Legionnaires' disease
A48.2 Nonpneumonic Legionnaires' disease [Pontiac fever]
A48.3 Toxic shock syndrome
A48.4 Brazilian purpuric fever
A48.5 Other specified botulism
A48.51 Infant botulism
A48.52 Wound botulism
A48.8 Other specified bacterial diseases
A49 Bacterial infection of unspecified site
A49.0 Staphylococcal infection, unspecified site
A49.01 Methicillin susceptible Staphylococcus aureus infection, unspecified site
A49.02 Methicillin resistant Staphylococcus aureus infection, unspecified site
A49.1 Streptococcal infection, unspecified site
A49.2 Hemophilus influenzae infection, unspecified site
A49.3 Mycoplasma infection, unspecified site
A49.8 Other bacterial infections of unspecified site
A49.9 Bacterial infection, unspecified
A50 Congenital syphilis
A50.0 Early congenital syphilis, symptomatic
A50.01 Early congenital syphilitic oculopathy

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.