2024 ICD-10-CM Diagnosis Code A49.1

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Streptococcal infection, unspecified site

  • A49.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2024 edition of ICD-10-CM A49.1 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of A49.1 – other international versions of ICD-10 A49.1 may differ.

The following code(s) above A49.1 contain annotation back-references

 that may be applicable to A49.1:

  • A00-B99  Certain infectious and parasitic diseases
  • A49  Bacterial infection of unspecified site

Approximate Synonyms

  • Infection by streptococcus group c
  • Infection due to abiotrophia
  • Infection due to lactococcus
  • Infection due to streptococcus gallolyticus
  • Infection due to streptococcus group b
  • Infection due to streptococcus group d
  • Infection due to streptococcus group g
  • Infection due to streptococcus viridans group
  • Lactococcus infection
  • Nutritionally variant streptococci infection
  • Peptostreptococcus infection
  • Pneumococcal infection
  • Pneumococcal infectious disease
  • Streptococcal infection
  • Streptococcal infectious disease
  • Streptococcus bovis infection
  • Streptococcus gallolyticus infection
  • Streptococcus group a infection
  • Streptococcus group b infection
  • Streptococcus group c infection
  • Streptococcus group d infection
  • Streptococcus group g infection
  • Streptococcus pyogenes infection
  • Streptococcus viridans infection

Clinical Information

  • Any of the several infectious disorders caused by members of streptococcus, a genus of gram positive bacteria belonging to the family streptococcaceae. Streptococcal infections are classified into groups a, b, c, d and g.
  • Infections with bacteria of the genus streptococcus.
  • Streptococcal infections (strep for short) cause a variety of health problems. There are two types: group a and group b. Antibiotics are used to treat both.group a strep causes
    • strep throat – a sore, red throat, sometimes with white spots on the tonsils
    • scarlet fever – 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, i.v. Antibiotics during labor can save your baby’s life. Adults can also get group b strep infections, especially if they are elderly or already have health problems. Strep b can cause urinary tract infections, blood infections, skin infections and pneumonia in adults.

ICD-10-CM A49.1 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

  • 867 Other infectious and parasitic diseases diagnoses with mcc
  • 868 Other infectious and parasitic diseases diagnoses with cc
  • 869 Other infectious and parasitic diseases diagnoses without cc/mcc

Convert A49.1 to ICD-9-CMCode 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

Diagnosis Index entries containing back-references to A49.1: