A04Header code — not billable
Other bacterial intestinal infections
- Chapter
- 1. Certain infectious and parasitic diseases
- Category
- A04
- Effective date
- October 1, 2026
Related codes in category A04
A04.0Enteropathogenic Escherichia coli infectionYesA04.1Enterotoxigenic Escherichia coli infectionYesA04.2Enteroinvasive Escherichia coli infectionYesA04.3Enterohemorrhagic Escherichia coli infectionYesA04.4Other intestinal Escherichia coli infectionsYesA04.5Campylobacter enteritisYesA04.6Enteritis due to Yersinia enterocoliticaYesA04.7Enterocolitis due to Clostridium difficileA04.71Enterocolitis due to Clostridium difficile, recurrentYesA04.72Enterocolitis d/t Clostridium difficile, not spcf as recurYesA04.8Other specified bacterial intestinal infectionsYesA04.9Bacterial intestinal infection, unspecifiedYes
Frequently asked questions
What is ICD-10 code A04?
A04 is an ICD-10-CM diagnosis code for Other bacterial intestinal infections.
Is A04 a billable code?
No. A04 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is A04 in?
A04 falls under Chapter 1: Certain infectious and parasitic diseases.
When did A04 become effective?
A04 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to A04?
A04 belongs to category A04, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.