ICD-10 Diagnosis Code A49.1

Streptococcal infection, unspecified site

Diagnosis Code A49.1

ICD-10: A49.1
Short Description: Streptococcal infection, unspecified site
Long Description: Streptococcal infection, unspecified site
This is the 2019 version of the ICD-10-CM diagnosis code A49.1

Valid for Submission
The code A49.1 is valid for submission for HIPAA-covered transactions.

Code Classification
  • Certain infectious and parasitic diseases (A00–B99)
    • Other bacterial diseases (A30-A49)
      • Bacterial infection of unspecified site (A49)
Version 2019 Billable Code

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code A49.1 is grouped in the following Diagnostic Related Group(s) (MS-DRG V35.0)


Convert to ICD-9
  • 041.00 - Streptococcus unspecf (Approximate Flag)

  • 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

Index to Diseases and Injuries
References found for the code A49.1 in the Index to Diseases and Injuries:

Information for Patients

Streptococcal Infections

Also called: Strep

Strep is short for Streptococcus, a type of bacteria. There are two types: 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, 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.

Antibiotics are used to treat strep infections.

NIH: National Institute of Allergy and Infectious Diseases

  • Ecthyma (Medical Encyclopedia)
  • Erysipelas (Medical Encyclopedia)
  • Group B streptococcal septicemia of the newborn (Medical Encyclopedia)
  • Group B streptococcus - pregnancy (Medical Encyclopedia)
  • Perianal streptococcal cellulitis (Medical Encyclopedia)
  • Rheumatic fever (Medical Encyclopedia)
  • Scarlet fever (Medical Encyclopedia)
  • Strep throat (Medical Encyclopedia)
  • Streptococcal screen (Medical Encyclopedia)
  • Throat swab culture (Medical Encyclopedia)
  • Toxic shock syndrome (Medical Encyclopedia)

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ICD-10 Footnotes

General Equivalence Map Definitions
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.

Present on Admission
The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement.

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