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v1.0.0
ICD-10 Guide
ICD-10 CodesA05.4

A05.4

Foodborne Bacillus cereus intoxication

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

Code Description

ICD-10 A05.4 is a billable code used to indicate a diagnosis of foodborne bacillus cereus intoxication.

Key Diagnostic Point:

Foodborne illness caused by the ingestion of toxins produced by Bacillus cereus, often associated with improperly stored or reheated rice and pasta.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of symptoms
  • Potential for severe cases

Audit Risk Factors

    Specialty Focus

    Medical Specialties

    Infectious Disease

    Documentation Requirements

    Detailed patient history including food intake and symptom onset.

    Common Clinical Scenarios

    Patient presents with nausea and vomiting after consuming fried rice.

    Billing Considerations

    Consider differential diagnosis with other foodborne pathogens.

    Coding Guidelines

    Inclusion Criteria

    Use A05.4 When
    • Use this code when the diagnosis is confirmed and symptoms are directly linked to Bacillus cereus toxin ingestion

    Exclusion Criteria

    Do NOT use A05.4 When
    No specific exclusions found.

    Related CPT Codes

    99213CPT Code

    Established patient office visit, Level 3

    Clinical Scenario

    Follow-up visit for foodborne illness management.

    Documentation Requirements

    Document history of present illness, review of systems, 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 tracking of foodborne illness outbreaks.

    ICD-9 vs ICD-10

    Accurate coding impacts public health reporting and tracking of foodborne illness outbreaks.

    Reimbursement & Billing Impact

    Accurate coding impacts public health reporting and tracking of foodborne illness outbreaks.

    Resources

    Clinical References

    • •
      CDC Foodborne Illnesses

    Coding & Billing References

    • •
      CDC Foodborne Illnesses

    Frequently Asked Questions

    What are the common sources of Bacillus cereus?

    Common sources include improperly stored rice, pasta, and other starchy foods.

    How is Bacillus cereus intoxication treated?

    Treatment typically involves supportive care, including hydration and rest.