ICD-10-CM Code A49.1

Streptococcal infection, unspecified site

Version 2020 Billable Code

Valid for Submission

A49.1 is a billable code used to specify a medical diagnosis of streptococcal infection, unspecified site. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code A49.1 might also be used to specify conditions or terms like 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, etc

Short Description:Streptococcal infection, unspecified site
Long Description:Streptococcal infection, unspecified site

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code A49.1 are found in the index:


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
  • 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 Streptococcus pneumoniae disease
  • Neonatal streptococcal infection
  • Pneumococcal infectious disease
  • Streptococcal infectious disease
  • Streptococcus acidominimus or Streptococcus pneumoniae or Streptococcus morbillorum
  • 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 morbillorum or Streptococcus agalactiae or Streptococcus acidominimus
  • Streptococcus pyogenes infection
  • Streptococcus sanguinis or Streptococcus gordonii

Diagnostic Related Groups

The ICD-10 code A49.1 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2019 through 09/30/2020.


Convert A49.1 to ICD-9

  • 041.00 - Streptococcus unspecf (Approximate Flag)

Code Classification

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

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients

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]