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    v1.0.28
    OpenPayerBilling CodesIntestinal infectious diseasesICD-10-CM a04-other-bacterial-intestinal-infections
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    ICD-10-CM Code For Other Bacterial Intestinal Infections: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group A04 includes various bacterial intestinal infections caused by pathogens such as Escherichia coli strains not otherwise specified, Klebsiella, Enterobacter, and other specified bacteria leading to gastroenteritis and enterocolitis. These ICD-10-CM diagnosis codes are used to document acute or chronic bacterial enteric infections, capturing disease severity, organism specificity when known, and any associated complications like dehydration or systemic involvement. Accurate coding within the ICD-10-CM A04 group supports proper claim adjudication and appropriate reimbursement.

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    ICD-10-CM A04: Other Bacterial Intestinal Infections Overview

    This group represents bacterial infections of the intestines caused by pathogens other than specific listed enteric bacteria, affecting the gastrointestinal tract and leading to symptoms such as diarrhea, abdominal pain, and systemic signs when severe. Accurate coding captures the infectious etiology and clinical severity, which supports appropriate claim adjudication and continuity of care. Precise documentation ensures correct assignment within the International Classification of Diseases, Tenth Revision, Clinical Modification and helps reflect resource use for reimbursement.

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    When to Use

    Use codes from this group when a bacterial intestinal infection is diagnosed and the responsible organism is identified or when a nonspecific bacterial etiology is documented. Assign codes to reflect acute versus chronic presentation, severity, and any complications such as dehydration or sepsis.

    ICD-10-CM Codes

    11 rows

    ICD-10-CM 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

    DRG Codes

    3 rows

    DRG CodeDescription
    371Major Gastrointestinal Disorders and Peritoneal Infections with MCC
    372Major Gastrointestinal Disorders and Peritoneal Infections with CC
    373Major Gastrointestinal Disorders and Peritoneal Infections without CC/MCC

    Related Codes

    A00-CHOLERA

    ICD-10-CM Code For Cholera: Group Overview

    A01-TYPHOID-AND-PARATYPHOID-FEVERS

    ICD-10-CM Code For Typhoid And Paratyphoid Fevers: Group Overview

    A02-OTHER-SALMONELLA-INFECTIONS

    ICD-10-CM Code For Other Salmonella Infections: Group Overview

    A03-SHIGELLOSIS

    ICD-10-CM Code For Shigellosis: Group Overview

    A05-OTHER-BACTERIAL-FOODBORNE-INTOXICATIONS

    ICD-10-CM Code For Other Bacterial Foodborne Intoxications Not Elsewhere Classified: Group Overview

    A06-AMEBIASIS

    ICD-10-CM Code For Amebiasis: Group Overview

    A07-OTHER-PROTOZOAL-INTESTINAL-DISEASES

    ICD-10-CM Code For Other Protozoal Intestinal Diseases: Group Overview

    Coming soon

    A08-VIRAL-AND-OTHER-SPECIFIED-INTESTINAL-INFECTIONS

    ICD-10-CM Code For Viral And Other Specified Intestinal Infections: Group Overview

    A09-INFECTIOUS-GASTROENTERITIS-AND-COLITIS

    ICD-10-CM Code For Infectious Gastroenteritis And Colitis, Unspecified: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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