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A04Non-billableSave

A04 - Other bacterial intestinal infections

ICD-10-CM Chapter 1: Certain infectious and parasitic diseases · A00-A09 Intestinal infectious diseases (A00-A09) · Top-level category · FY2027

Coding Guidance

A04 is a non-billable heading. Report one of the 10 more specific codes below.

Includes, Excludes and Coding Notes

Excludes 1 — Not Coded HereFrom A04

Mutually exclusive: these conditions are never reported together with this code.

  • bacterial foodborne intoxications, NEC (A05.-)
  • tuberculous enteritis (A18.32)
IncludesFrom Chapter A00-B99

Conditions this code covers.

  • diseases generally recognized as communicable or transmissible
Excludes 2 — Not Included HereFrom Chapter A00-B99

Not part of this code; report both codes when the patient has both conditions.

  • carrier or suspected carrier of infectious disease (Z22.-)
  • certain localized infections - see body system-related chapters
  • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
  • infectious and parasitic diseases specific to the perinatal period (P35-P39)
  • influenza and other acute respiratory infections (J00-J22)
Use Additional CodeFrom Chapter A00-B99

Add a secondary code to identify the associated condition or cause when it is documented.

  • code to identify resistance to antimicrobial drugs (Z16.-)

More Specific Codes (10)

A04.0Enteropathogenic Escherichia coli infection→A04.1Enterotoxigenic Escherichia coli infection→A04.2Enteroinvasive Escherichia coli infection→A04.3Enterohemorrhagic Escherichia coli infection→A04.4Other intestinal Escherichia coli infections→A04.5Campylobacter enteritis→A04.6Enteritis due to Yersinia enterocolitica→A04.7Enterocolitis due to Clostridium difficile→A04.8Other specified bacterial intestinal infections→A04.9Bacterial intestinal infection, unspecified→

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with A04.