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v1.0.0
ICD-10 Guide
ICD-10 CodesA03.3

A03.3

Shigellosis due to Shigella sonnei

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

Code Description

ICD-10 A03.3 is a billable code used to indicate a diagnosis of shigellosis due to shigella sonnei.

Key Diagnostic Point:

Shigellosis is an infectious disease caused by the Shigella bacteria, specifically Shigella sonnei, leading to diarrhea, fever, and stomach cramps.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Severity of symptoms
  • Potential for dehydration

Audit Risk Factors

    Specialty Focus

    Medical Specialties

    Infectious Disease

    Documentation Requirements

    Detailed patient history, symptom severity, and treatment response.

    Common Clinical Scenarios

    Acute gastroenteritis with bloody diarrhea, travel-related infections.

    Billing Considerations

    Consider potential outbreaks and public health reporting.

    Coding Guidelines

    Inclusion Criteria

    Use A03.3 When
    • Ensure accurate documentation of the causative organism and clinical presentation to support the diagnosis

    Exclusion Criteria

    Do NOT use A03.3 When
    No specific exclusions found.

    Related CPT Codes

    87510CPT Code

    Infectious agent detection by nucleic acid (DNA or RNA); direct probe technique

    Clinical Scenario

    Testing for Shigella sonnei in stool samples.

    Documentation Requirements

    Document the reason for testing and clinical symptoms.

    Specialty Considerations

    Consider referral to infectious disease specialists for severe cases.

    ICD-10 Impact

    Diagnostic & Documentation Impact

    Enhanced Specificity

    ICD-10 Improvements

    Accurate coding impacts public health reporting and resource allocation for outbreaks.

    ICD-9 vs ICD-10

    Accurate coding impacts public health reporting and resource allocation for outbreaks.

    Reimbursement & Billing Impact

    Accurate coding impacts public health reporting and resource allocation for outbreaks.

    Resources

    Clinical References

    • •
      CDC Shigellosis Information

    Coding & Billing References

    • •
      CDC Shigellosis Information

    Frequently Asked Questions

    What are the common symptoms of Shigellosis?

    Common symptoms include diarrhea (often bloody), fever, stomach cramps, and nausea.

    How is Shigellosis transmitted?

    Shigellosis is transmitted through direct person-to-person contact, contaminated food or water, and poor hygiene practices.