ICD-10-CM Code A49.8

Other bacterial infections of unspecified site

Version 2020 Billable Code

Valid for Submission

A49.8 is a billable code used to specify a medical diagnosis of other bacterial infections of unspecified site. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code A49.8 might also be used to specify conditions or terms like acinetobacter calcoaceticus or acinetobacter haemolyticus, aeromonas hydrophilia or aeromonas punctata, aeromonas or plesiomonas present, agrobacterium radiobacter or agrobacterium tumefaciens, anaerococcus tetradius or anaerococcus prevotii, bacterial infection due to bacillus, etc

Short Description:Other bacterial infections of unspecified site
Long Description:Other bacterial infections of 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 A49.8 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:

  • Acinetobacter calcoaceticus or Acinetobacter haemolyticus
  • Aeromonas hydrophilia 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 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 Flavimonas oryzihabitans
  • Citrobacter braakii or Citrobacter freundii or Citrobacter sedlakii
  • Citrobacter freundii or Citrobacter youngae
  • Citrobacter koseri or Citrobacter amalonaticus
  • 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 Bacillus cereus
  • Infection caused by Bifidobacterium
  • Infection caused by Burkholderia
  • Infection caused by Clostridium botulinum
  • Infection caused by Enterobacter
  • Infection caused by Escherichia coli O158
  • Infection caused by Klebsiella
  • Infection caused by Klebsiella aerogenes
  • 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 diphtheroid bacteria
  • Infection due to Enterobacteriaceae
  • 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 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

Diagnostic Related Groups

The ICD-10 code A49.8 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 10/01/2020 through 09/30/2020.


Convert A49.8 to ICD-9

  • 041.89 - Oth specf bacteria (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

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 bacteria won't hurt you - less than 1 percent of the different types make people sick. Many are helpful. Some bacteria 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.

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