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v1.0.0
ICD-10 Guide
ICD-10 CodesA05.9

A05.9

Bacterial foodborne intoxication, unspecified

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

Code Description

ICD-10 A05.9 is a billable code used to indicate a diagnosis of bacterial foodborne intoxication, unspecified.

Key Diagnostic Point:

A condition resulting from the ingestion of food contaminated with bacteria or their toxins, leading to gastrointestinal symptoms such as nausea, vomiting, diarrhea, and abdominal pain.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of bacterial agents
  • Potential for severe symptoms

Audit Risk Factors

    Specialty Focus

    Medical Specialties

    Infectious Disease

    Documentation Requirements

    Detailed patient history and symptom description.

    Common Clinical Scenarios

    Patient presents with acute gastroenteritis after eating at a restaurant.

    Billing Considerations

    Consider potential outbreaks and public health reporting.

    Coding Guidelines

    Inclusion Criteria

    Use A05.9 When
    • Use this code when the specific bacterial agent is unknown or unspecified
    • Ensure to document all relevant symptoms and potential sources of exposure

    Exclusion Criteria

    Do NOT use A05.9 When
    No specific exclusions found.

    Related CPT Codes

    99213CPT Code

    Established patient office visit, Level 3

    Clinical Scenario

    Follow-up visit for gastrointestinal symptoms.

    Documentation Requirements

    Document history, examination findings, and treatment plan.

    Specialty Considerations

    Consider referral to infectious disease specialist if symptoms persist.

    ICD-10 Impact

    Diagnostic & Documentation Impact

    Enhanced Specificity

    ICD-10 Improvements

    Accurate coding impacts public health reporting and resource allocation for food safety initiatives.

    ICD-9 vs ICD-10

    Accurate coding impacts public health reporting and resource allocation for food safety initiatives.

    Reimbursement & Billing Impact

    Accurate coding impacts public health reporting and resource allocation for food safety initiatives.

    Resources

    Clinical References

    • •
      CDC Foodborne Illnesses

    Coding & Billing References

    • •
      CDC Foodborne Illnesses

    Frequently Asked Questions

    What are the common symptoms of bacterial foodborne intoxication?

    Common symptoms include nausea, vomiting, diarrhea, abdominal cramps, and fever.

    How is bacterial foodborne intoxication diagnosed?

    Diagnosis is typically based on clinical symptoms, patient history, and sometimes laboratory testing.