A04
⚠ Non-billable (Header)Other bacterial intestinal infections
Certain infectious and parasitic diseases (A00-B99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
❌ Excludes1
directCannot be coded with A04
- • bacterial foodborne intoxications, NEC (A05.-)
- • tuberculous enteritis (A18.32)
Child Codes (10)
A04.0Enteropathogenic Escherichia coli infectionA04.1Enterotoxigenic Escherichia coli infectionA04.2Enteroinvasive Escherichia coli infectionA04.3Enterohemorrhagic Escherichia coli infectionA04.4Other intestinal Escherichia coli infectionsA04.5Campylobacter enteritisA04.6Enteritis due to Yersinia enterocoliticaA04.7Enterocolitis due to Clostridium difficileA04.8Other specified bacterial intestinal infectionsA04.9Bacterial intestinal infection, unspecified
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CodeA04
BillableNo — Header code
CategoryCertain infectious and parasitic diseases (A00-B99)
Excludes12 rule(s)
Excludes20 note(s)
Child codes10
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)