Other bacterial foodborne intoxications, not elsewhere classified
In Intestinal infectious diseases (A00-A09), chapter 1: Certain Infectious and Parasitic Diseases
8 billable codes under A05: 7 are a CC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.
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Instructional notes
Excludes1: not coded here, use a different code
- Clostridium difficile foodborne intoxication and infection (A04.7-)
- Escherichia coli infection (A04.0-A04.4)
- listeriosis (A32.-)
- salmonella foodborne intoxication and infection (A02.-)
- toxic effect of noxious foodstuffs (T61-T62)
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Rules for coding infections and parasitic diseases, including HIV, organism and drug resistance codes, sepsis and septic shock, MRSA, Zika, and COVID-19.
- Human Immunodeficiency Virus (HIV) Infections (page 19)
- Infectious agents as the cause of diseases classified to other chapters (page 22)
- Infections resistant to antibiotics (page 22)
- Sepsis, Severe Sepsis, and Septic Shock (page 23)
- Methicillin Resistant Staphylococcus aureus (MRSA) Conditions (page 27)
- Zika virus infections (page 28)
- Coronavirus infections (page 28)
All codes under A05
A05 can't be used on a claim. Pick a billable code below; grey headings group them.
- A05.0Foodborne staphylococcal intoxication
- A05.1Botulism food poisoning
- A05.2Foodborne Clostridium perfringens [Clostridium welchii] intoxication
- A05.3Foodborne Vibrio parahaemolyticus intoxication
- A05.4Foodborne Bacillus cereus intoxication
- A05.5Foodborne Vibrio vulnificus intoxication
- A05.8Other specified bacterial foodborne intoxications
- A05.9Bacterial foodborne intoxication, unspecified
A05 MS-DRGs
As the principal diagnosis, the billable codes under A05 group to these 8 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
- DRG 371 Major Gastrointestinal Disorders and Peritoneal Infections with MCC (6 of 8 codes)
- DRG 372 Major Gastrointestinal Disorders and Peritoneal Infections with CC (6 of 8 codes)
- DRG 373 Major Gastrointestinal Disorders and Peritoneal Infections without CC/MCC (6 of 8 codes)
- DRG 391 Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC (1 of 8 codes)
- DRG 392 Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCC (1 of 8 codes)
- DRG 867 Other Infectious and Parasitic Diseases Diagnoses with MCC (1 of 8 codes)
- DRG 868 Other Infectious and Parasitic Diseases Diagnoses with CC (1 of 8 codes)
- DRG 869 Other Infectious and Parasitic Diseases Diagnoses without CC/MCC (1 of 8 codes)
Other codes that refer to A05
Notes on these codes point to A05.
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Digestive Diseases
When you eat, your body breaks food down to a form it can use to build and nourish cells and provide energy. This process is called digestion. Your digestive system is a series of hollow organs joined in a long, twisting tube. It runs from your mouth to your anus and includes your esophagus, stomach, and small and large intestines. Your liver, gallbladder and pancreas are also involved. They produce juices to help digestion.
Read more about digestive diseases on MedlinePlusInfectious Diseases
Germs, or microbes, are found everywhere - in the air, soil, and water. There are also germs on your skin and in your body. Many of them are harmless, and some can even be helpful. But some of them can make you sick. Infectious diseases are diseases that are caused by germs.
Read more about infectious diseases on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.