2024 ICD-10-CM Diagnosis Code A49.8

Other bacterial infections of unspecified site

ICD-10-CM Code:
A49.8
ICD-10 Code for:
Other bacterial infections of 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)

A49.8 is a billable diagnosis code used to specify a medical diagnosis of other bacterial infections of 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 A49.8 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:

  • Acinetobacter calcoaceticus or Acinetobacter haemolyticus
  • Aeromonas hydrophila or Aeromonas punctata
  • Aeromonas or Plesiomonas present
  • Agrobacterium radiobacter or Agrobacterium tumefaciens
  • Anaerococcus tetradius or Anaerococcus prevotii
  • Bacterial infection due to Bacillus
  • Bacterial infection due to Klebsiella pneumoniae
  • Bacterial infection due to Morganella morganii
  • Bacterial infection due to Proteus mirabilis
  • Bacterial infection due to Proteus mirabilis
  • Bacterial infection due to Pseudomonas
  • Bacterial infection due to Serratia
  • Botryomycosis
  • Brevundimonas diminuta or Brevundimonas vesicularis
  • Brevundimonas diminuta or Oligella urethralis
  • Campylobacteriosis
  • Capnocytophaga canimorsus or Capnocytophaga cynodegmi
  • Chryseobacterium indologenes or Brevundimonas vesicularis
  • Chryseobacterium indologenes or Empedobacter brevis
  • Chryseomonas luteola or Pseudomonas oryzihabitans
  • Citrobacter amalonaticus or Citrobacter koseri
  • Citrobacter braakii or Citrobacter freundii or Citrobacter sedlakii
  • Citrobacter freundii or Citrobacter youngae
  • Citrobacter koseri or Citrobacter farmeri
  • Citrobacter werkmanii or Citrobacter youngae
  • Clostridial infection
  • Colibacillosis gravidarum
  • Columnaris disease
  • Corynebacterium afermentans or Corynebacterium coyleae
  • Corynebacterium auris or Turicella otitidis
  • Delftia acidovorans or Comamonas testosteroni
  • Dermacoccus nishinomiyaensis or Kytococcus sedentarius
  • Disease due to Moraxella
  • Enterobacter cloacae or Enterobacter asburiae
  • Enterococcus casseliflavus or Enterococcus gallinarum
  • Enterococcus durans or Enterococcus hirae
  • Escherichia coli or Hafnia alvei
  • Gemella morbillorum or Streptococcus agalactiae or Streptococcus acidominimus
  • Haemophilus infection
  • Infection by Bacteroides fragilis
  • Infection by Campylobacter fetus
  • Infection caused by Acinetobacter
  • Infection caused by Acinetobacter
  • Infection caused by Acinetobacter
  • Infection caused by Acinetobacter
  • Infection caused by Bacillus cereus
  • Infection caused by Bifidobacterium
  • Infection caused by Burkholderia
  • Infection caused by carbapenemase-producing Enterobacteriaceae
  • Infection caused by Citrobacter
  • Infection caused by Clostridium botulinum
  • Infection caused by Enterobacter
  • Infection caused by ESBL Klebsiella oxytoca
  • Infection caused by ESBL Proteus mirabilis
  • Infection caused by Escherichia coli O158
  • Infection caused by Klebsiella
  • Infection caused by Klebsiella aerogenes
  • Infection caused by multi drug resistant bacteria
  • Infection caused by multi drug resistant bacteria
  • Infection due to Abiotrophia
  • Infection due to Arcanobacterium pyogenes
  • Infection due to Bacteroides
  • Infection due to carbapenem resistant Acinetobacter
  • Infection due to carbapenem resistant bacteria
  • Infection due to Clostridium chauvoei
  • Infection due to Clostridium novyi
  • Infection due to Corynebacterium
  • Infection due to corynebacterium jeikeium
  • Infection due to Corynebacterium kutscheri
  • Infection due to Corynebacterium minutissimum
  • Infection due to Enterobacteriaceae
  • Infection due to ESBL bacteria
  • Infection due to ESBL bacteria
  • Infection due to ESBL bacteria
  • Infection due to ESBL bacteria
  • Infection due to ESBL Escherichia coli
  • Infection due to ESBL Klebsiella pneumoniae
  • Infection due to Escherichia coli O157
  • Infection due to Fusobacterium
  • Infection due to Grimontia hollisae
  • Infection due to Lactococcus
  • Infection due to Mannheimia haemolytica
  • Infection due to multidrug resistant Acinetobacter
  • Infection due to multidrug resistant Acinetobacter
  • Infection due to multidrug resistant Acinetobacter baumannii
  • Infection due to non-cholerae vibrio
  • Infection due to Shiga toxin producing Escherichia coli
  • Infection due to Staphylococcus Coagulase negative
  • Infection due to Vibrio
  • Infection due to Vibrio alginolyticus
  • Infection due to Vibrio fluvialis
  • Infection due to Vibrio mimicus
  • Infection due to Vibrio parahaemolyticus
  • Klebsiella pneumoniae or Klebsiella oxytoca
  • Kocuria varians or Kocuria rosea
  • Mannheimia haemolytica or Bibersteinia trehalosi
  • Micrococcus luteus or Micrococcus lylae
  • Mima polymorpha infection
  • Morganella infection
  • Pasteurella haemolytica or Rodentibacter pneumotropicus
  • Peptostreptococcus infection
  • Prevotella buccalis or Prevotella oralis
  • Prevotella buccalis or Prevotella veroralis
  • Prevotella loescheii or Prevotella denticola
  • Prevotella nigrescens or Prevotella intermedia
  • Prevotella oris or Prevotella buccae
  • Proteus infection
  • Proteus mirabilis or Proteus penneri
  • Proteus vulgaris or Proteus penneri
  • Providencia alcalifaciens or Providencia rustigianii
  • Pseudomonal botryomycosis
  • Pseudomonas fluorescens or Pseudomonas putida
  • Pseudomonas fluorescens or Pseudomonas putida or Pseudomonas mendocina
  • Pseudomonas stutzeri or Pseudomonas mendocina
  • Shewanella algae or Shewanella putrefaciens
  • Staphylococcus aureus or Staphylococcus intermedius
  • Staphylococcus saprophyticus or Staphylococcus hominis
  • Staphylococcus warneri or Staphylococcus pasteuri
  • Superadded anaerobic infection
  • Superimposed infection
  • Ulcer due to Bacteroides
  • Vibrio fluvialis or Vibrio furnissii
  • Vibrio vulnificus infection
  • Weeksella virosa or Empedobacter brevis
  • Yersinia frederiksenii or Yersinia intermedia

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 A49.8 to ICD-9-CM

  • ICD-9-CM Code: 041.89 - Oth specf bacteria
    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


Bacterial Infections

Bacteria are living things that have only one cell. Under a microscope, they look like balls, rods, or spirals. They are so small that a line of 1,000 could fit across a pencil eraser. Most types of don't make you sick. Many types are helpful. Some of them help to digest food, destroy disease-causing cells, and give the body needed vitamins. Bacteria are also used in making healthy foods like yogurt and cheese.

But infectious bacteria can make you ill. They reproduce quickly in your body. Many give off chemicals called toxins, which can damage tissue and make you sick. Examples of bacteria that cause infections include Streptococcus, Staphylococcus, and E. coli.

Antibiotics are the usual treatment. When you take antibiotics, follow the directions carefully. Each time you take antibiotics, you increase the chances that bacteria in your body will learn to resist them causing antibiotic resistance. Later, you could get or spread an infection that those antibiotics cannot cure.

NIH: National Institute of Allergy and Infectious Diseases


[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.