ICD-10 Code A04.8

Other specified bacterial intestinal infections

Version 2019 Billable Code
ICD-10: A04.8
Short Description:Other specified bacterial intestinal infections
Long Description:Other specified bacterial intestinal infections

Valid for Submission

ICD-10 A04.8 is a billable code used to specify a medical diagnosis of other specified bacterial intestinal infections. The code is valid for the year 2019 for the submission of HIPAA-covered transactions.

Code Classification

  • Certain infectious and parasitic diseases (A00–B99)
    • Intestinal infectious diseases (A00-A09)
      • Other bacterial intestinal infections (A04)

Information for Medical Professionals

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). The diagnosis code A04.8 is grouped in the following groups for version MS-DRG V36.0 applicable from 10/01/2018 through 09/30/2019.


Convert A04.8 to ICD-9

The following crosswalk between ICD-10 to ICD-9 is based based on the General Equivalence Mappings (GEMS) information:

  • 008.2 - Aerobacter enteritis (Approximate Flag)
  • 008.41 - Staphylococc enteritis (Approximate Flag)
  • 008.49 - Bacterial enteritis NEC (Approximate Flag)


The following clinical terms are approximate synonyms:

  • Aerobacter aerogenes infection
  • Bacterial infection due to Morganella morganii
  • Bacterial infection due to Morganella morganii
  • Bacterial infection due to Proteus mirabilis
  • Colitis caused by bacterium
  • Colitis caused by bacterium
  • Colitis caused by bacterium
  • Colitis caused by Salmonella
  • Diarrhea due to staphylococcus
  • Gastrointestinal infection due to Klebsiella mobilis
  • Helicobacter pylori gastrointestinal tract infection
  • Helicobacter-associated colitis
  • Infection caused by Enterobacter
  • Infection caused by Helicobacter pylori
  • Infection due to Pseudomonas aeruginosa
  • Infectious diarrheal disease
  • Intestinal infection caused by Plesiomonas shigelloides
  • Intestinal infection due to Aeromonas hydrophila
  • Intestinal infection due to Klebsiella mobilis
  • Intestinal infection due to Morganella morganii
  • Intestinal infection due to Proteus mirabilis
  • Intestinal infection due to Pseudomonas
  • Intestinal infectious disease due to anaerobic bacteria
  • Intestinal infectious disease due to Gram-negative bacteria
  • Morganella infection
  • Morganella infection
  • Morganella morganii gastrointestinal tract infection
  • Proteus gastrointestinal tract infection
  • Proteus infection
  • Proteus mirabilis gastrointestinal tract infection
  • Pseudomonas gastrointestinal tract infection
  • Salmonella gastroenteritis
  • Staphylococcal enterocolitis
  • Staphylococcal gastroenteritis
  • Staphylococcal gastrointestinal tract infection

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 A04.8 are found in the index:

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.

NIH: National Institute of Allergy and Infectious Diseases

  • Actinomycosis (Medical Encyclopedia)
  • Bacterial vaginosis -- aftercare (Medical Encyclopedia)
  • Blood culture (Medical Encyclopedia)
  • Gram stain (Medical Encyclopedia)
  • Gram stain of skin lesion (Medical Encyclopedia)
  • Necrotizing soft tissue infection (Medical Encyclopedia)

[Learn More]


Also called: Stomach flu

Have you ever had the "stomach flu?" What you probably had was gastroenteritis - not a type of flu at all. Gastroenteritis is an inflammation of the lining of the intestines caused by a virus, bacteria or parasites. Viral gastroenteritis is the second most common illness in the U.S. The cause is often a norovirus infection. It spreads through contaminated food or water, and contact with an infected person. The best prevention is frequent hand washing.

Symptoms of gastroenteritis include diarrhea, abdominal pain, vomiting, headache, fever and chills. Most people recover with no treatment.

The most common problem with gastroenteritis is dehydration. This happens if you do not drink enough fluids to replace what you lose through vomiting and diarrhea. Dehydration is most common in babies, young children, the elderly and people with weak immune systems.

NIH: National Institute of Diabetes and Digestive and Kidney Diseases

  • Bacterial gastroenteritis (Medical Encyclopedia)
  • Bland diet (Medical Encyclopedia)
  • CMV - gastroenteritis/colitis (Medical Encyclopedia)
  • Stool Gram stain (Medical Encyclopedia)
  • Viral gastroenteritis (Medical Encyclopedia)
  • When you have nausea and vomiting (Medical Encyclopedia)
  • When you or your child has diarrhea (Medical Encyclopedia)

[Learn More]

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.