2024 ICD-10-CM Diagnosis Code A49.1

Streptococcal infection, unspecified site

ICD-10-CM Code:
A49.1
ICD-10 Code for:
Streptococcal infection, unspecified site
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:

Code Classification

  • Certain infectious and parasitic diseases
    (A00–B99)
    • Other bacterial diseases
      (A30-A49)
      • Bacterial infection of unspecified site
        (A49)

A49.1 is a billable diagnosis code used to specify a medical diagnosis of streptococcal infection, unspecified site. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Unspecified diagnosis codes like A49.1 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Approximate Synonyms

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

  • Bacterial infection due to Streptococcus milleri group
  • Drug resistant Streptococcus pneumoniae disease
  • Infantile streptococcal infection
  • Infantile streptococcal infection
  • Infection caused by alpha-hemolytic Streptococcus
  • Infection caused by beta-hemolytic Streptococcus
  • Infection caused by gamma-hemolytic Streptococcus
  • Infection caused by Streptococcus mitis group
  • Infection due to Streptococcus gallolyticus
  • Infection due to Streptococcus group D
  • Infection due to Streptococcus group G
  • Infection due to Streptococcus suis
  • Infection due to Streptococcus viridans group
  • Infection due to Streptococcus viridans group
  • Infection due to Streptococcus viridans group
  • Invasive beta-hemolytic streptococcal disease
  • Invasive beta-hemolytic streptococcal disease, non-Group A, non-Group B
  • Invasive drug resistant Streptococcus pneumoniae disease
  • Invasive streptococcal disease
  • Invasive streptococcal disease
  • Invasive Streptococcus pneumoniae disease
  • Invasive Streptococcus pneumoniae disease
  • Neonatal streptococcal infection
  • Pneumococcal infectious disease
  • Streptococcal infectious disease
  • Streptococcus agalactiae infection
  • Streptococcus anginosus or Streptococcus dysgalactiae subspecies dysgalactiae
  • Streptococcus anginosus or Streptococcus intermedius
  • Streptococcus constellatus or Streptococcus anginosus
  • Streptococcus group B infection of the infant
  • Streptococcus group B infection of the infant - age less than 30 days
  • Streptococcus lutetiensis or Streptococcus bovis
  • Streptococcus mitis or Streptococcus oralis
  • Streptococcus pyogenes infection
  • Streptococcus sanguinis or Streptococcus gordonii

Clinical Classification

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Convert A49.1 to ICD-9-CM

  • ICD-9-CM Code: 041.00 - Streptococcus unspecf
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education


Streptococcal Infections

Strep is short for Streptococcus, a type of bacteria. There are several types. Two of them cause most of the strep infections in people: group A and group B.

Group A strep causes:

  • Strep throat - a sore, red throat. Your tonsils may be swollen and have white spots on them.
  • Scarlet fever - an illness that follows strep throat. It causes a red rash on the body.
  • Impetigo - a skin infection
  • Toxic shock syndrome
  • Cellulitis and necrotizing fasciitis (flesh-eating disease)

Group B strep can cause blood infections, pneumonia and meningitis in newborns. A screening test during pregnancy can tell if you have it. If you do, intravenous (IV) antibiotics during labor can save your baby's life. Adults can also get group B strep infections, especially if they are 65 or older or already have health problems. Strep B can cause urinary tract infections, blood infections, skin infections and pneumonia in adults.

Antibiotics are used to treat strep infections.


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • 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. This was the first year ICD-10-CM was implemented into the HIPAA code set.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.