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v1.0.0
ICD-10 Guide
ICD-10 CodesA04

A04

Other bacterial intestinal infections

BILLABLE STATUSNo
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/04/2025

Code Description

ICD-10 A04 is a used to indicate a diagnosis of other bacterial intestinal infections.

Key Diagnostic Point:

This code is used for various bacterial infections affecting the intestines that are not classified elsewhere. It includes infections caused by bacteria such as Campylobacter, Yersinia, and others.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of causative organisms
  • Potential for severe complications

Audit Risk Factors

    Specialty Focus

    Medical Specialties

    Gastroenterology

    Documentation Requirements

    Detailed patient history, laboratory results, and treatment plans.

    Common Clinical Scenarios

    Acute gastroenteritis, foodborne illness outbreaks, travel-related infections.

    Billing Considerations

    Consideration of recent travel history and exposure to contaminated food or water.

    Coding Guidelines

    Inclusion Criteria

    Use A04 When
    • Ensure accurate identification of the specific bacterial agent when possible, and document any relevant symptoms and treatments

    Exclusion Criteria

    Do NOT use A04 When
    No specific exclusions found.

    Related Codes

    Child Codes

    12 codes
    A04.0
    Enteropathogenic Escherichia coli infection
    A04.1
    Enterotoxigenic Escherichia coli infection
    A04.2
    Enteroinvasive Escherichia coli infection
    A04.3
    Enterohemorrhagic Escherichia coli infection
    A04.4
    Other intestinal Escherichia coli infections
    A04.5
    Campylobacter enteritis
    A04.6
    Enteritis due to Yersinia enterocolitica
    A04.7
    Enterocolitis due to Clostridium difficile
    A04.71
    Enterocolitis due to Clostridium difficile, recurrent
    A04.72
    Enterocolitis due to Clostridium difficile, not specified as recurrent
    A04.8
    Other specified bacterial intestinal infections
    A04.9
    Bacterial intestinal infection, unspecified

    Related CPT Codes

    87070CPT Code

    Culture, bacterial, stool

    Clinical Scenario

    Testing stool samples for bacterial pathogens in suspected cases of A04.

    Documentation Requirements

    Document symptoms, duration, and any prior treatments.

    Specialty Considerations

    Gastroenterology may require additional tests for comprehensive evaluation.

    ICD-10 Impact

    Diagnostic & Documentation Impact

    Enhanced Specificity

    ICD-10 Improvements

    The introduction of A04 allows for more specific coding of bacterial infections, improving data accuracy and treatment tracking.

    ICD-9 vs ICD-10

    The introduction of A04 allows for more specific coding of bacterial infections, improving data accuracy and treatment tracking.

    Reimbursement & Billing Impact

    The introduction of A04 allows for more specific coding of bacterial infections, improving data accuracy and treatment tracking.

    Resources

    Clinical References

    • •
      CDC Guidelines on Bacterial Gastroenteritis

    Coding & Billing References

    • •
      CDC Guidelines on Bacterial Gastroenteritis

    Frequently Asked Questions

    What are the common symptoms of bacterial intestinal infections?

    Common symptoms include diarrhea, abdominal pain, fever, and vomiting.

    How can bacterial intestinal infections be prevented?

    Prevention includes practicing good hygiene, safe food handling, and avoiding contaminated water.