2017/18 ICD-10-CM Diagnosis Code A49

Bacterial infection of unspecified site

Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as A49. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • bacterial agents as the cause of diseases classified elsewhere (
    ICD-10-CM Diagnosis Code B95

    Streptococcus, Staphylococcus, and Enterococcus as the cause of diseases classified elsewhere

      2016 2017 2018 Non-Billable/Non-Specific Code
    B95
    -
    ICD-10-CM Diagnosis Code B96

    Other bacterial agents as the cause of diseases classified elsewhere

      2016 2017 2018 Non-Billable/Non-Specific Code
    B96
    )
  • chlamydial infection NOS (
    ICD-10-CM Diagnosis Code A74.9

    Chlamydial infection, unspecified

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Chlamydiosis NOS
    A74.9
    )
  • meningococcal infection NOS (
    ICD-10-CM Diagnosis Code A39.9

    Meningococcal infection, unspecified

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Meningococcal disease NOS
    A39.9
    )
  • rickettsial infection NOS (
    ICD-10-CM Diagnosis Code A79.9

    Rickettsiosis, unspecified

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Rickettsial infection NOS
    A79.9
    )
  • spirochetal infection NOS (
    ICD-10-CM Diagnosis Code A69.9

    Spirochetal infection, unspecified

      2016 2017 2018 Billable/Specific Code
    A69.9
    )
The following code(s) above A49 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:
  • A00-B99
    2018 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
Clinical Information Code History
ICD-10-CM Codes Adjacent To A49
A48 Other bacterial diseases, not elsewhere classified
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

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