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A04 Other bacterial intestinal infections

ICD-10-CM category A04 sits in Chapter 1 (Certain infectious and parasitic diseases, A00-B99). It contains 11 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.

Subcategories

A04.7 Enterocolitis due to Clostridium difficile

Billable codes in A04

CodeDescription
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
A04.71Enterocolitis due to Clostridium difficile, recurrent
A04.72Enterocolitis due to Clostridium difficile, not specified as recurrent
A04.8Other specified bacterial intestinal infections
A04.9Bacterial intestinal infection, unspecified

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