Other bacterial intestinal infections (A04)
ICD-10 codes in the A04 section classify various bacterial intestinal infections caused by different types of bacteria, primarily Escherichia coli strains, Campylobacter, Yersinia enterocolitica, Clostridium difficile, and other specified bacteria. These codes help identify specific infections like enteropathogenic, enterotoxigenic, and enterohemorrhagic E. coli infections, Campylobacter enteritis, and Clostridium difficile colitis.
This section is used when coding infections such as Escherichia coli colitis (e.g., A04.0 for enteropathogenic E. coli, or A04.3 for enterohemorrhagic E. coli, known for causing hemorrhagic colitis), and traveler’s diarrhea caused by enterotoxigenic E. coli (A04.1). It also covers Campylobacter jejuni or coli infections (A04.5), Yersinia enterocolitica enteritis (A04.6), as well as enterocolitis due to Clostridium difficile, including recurrent infections (A04.7 and subcodes). Additionally, A04.8 encompasses other less common bacterial intestinal infections caused by various bacteria such as Staphylococcus aureus, Klebsiella, and Helicobacter. The unspecified bacterial intestinal infection code A04.9 covers cases when the exact bacteria are unknown but symptoms show bacterial intestinal infection.
Certain infectious and parasitic diseases (A00–B99)
Intestinal infectious diseases (A00-A09)
A04 Other bacterial intestinal infections
- A04.0 Enteropathogenic Escherichia coli infection
- A04.1 Enterotoxigenic Escherichia coli infection
- A04.2 Enteroinvasive Escherichia coli infection
- A04.3 Enterohemorrhagic Escherichia coli infection
- A04.4 Other intestinal Escherichia coli infections
- A04.5 Campylobacter enteritis
- A04.6 Enteritis due to Yersinia enterocolitica
A04.7 Enterocolitis due to Clostridium difficile
- A04.71 Enterocolitis due to Clostridium difficile, recurrent
- A04.72 Enterocolitis due to Clostridium difficile, not specified as recurrent
- A04.8 Other specified bacterial intestinal infections
- A04.9 Bacterial intestinal infection, unspecified
Other bacterial intestinal infections (A04)
Instructional Notations
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
