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ICD-10 Guide
ICD-10 CodesA08.31

A08.31

Calicivirus enteritis

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

Code Description

ICD-10 A08.31 is a billable code used to indicate a diagnosis of calicivirus enteritis.

Key Diagnostic Point:

Calicivirus enteritis is an inflammation of the intestine caused by calicivirus, often leading to gastroenteritis symptoms such as diarrhea, vomiting, and abdominal pain.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Viral etiology
  • Symptom variability

Audit Risk Factors

    Specialty Focus

    Medical Specialties

    Infectious Disease

    Documentation Requirements

    Detailed patient history, symptom description, and laboratory test results.

    Common Clinical Scenarios

    Acute gastroenteritis in patients with recent exposure to contaminated food or water.

    Billing Considerations

    Consideration of outbreak scenarios and potential public health reporting.

    Coding Guidelines

    Inclusion Criteria

    Use A08.31 When
    • Use A08
    • 31 for cases specifically diagnosed as calicivirus enteritis, ensuring to document the clinical presentation and any relevant laboratory findings

    Exclusion Criteria

    Do NOT use A08.31 When
    No specific exclusions found.

    Related CPT Codes

    87581CPT Code

    Nucleic acid amplification for viral detection

    Clinical Scenario

    Testing for calicivirus in patients with gastroenteritis symptoms.

    Documentation Requirements

    Document clinical symptoms and exposure history.

    Specialty Considerations

    Infectious disease specialists may require additional testing for differential diagnosis.

    ICD-10 Impact

    Diagnostic & Documentation Impact

    Enhanced Specificity

    ICD-10 Improvements

    Accurate coding of calicivirus enteritis is crucial for epidemiological tracking and appropriate treatment protocols.

    ICD-9 vs ICD-10

    Accurate coding of calicivirus enteritis is crucial for epidemiological tracking and appropriate treatment protocols.

    Reimbursement & Billing Impact

    Accurate coding of calicivirus enteritis is crucial for epidemiological tracking and appropriate treatment protocols.

    Resources

    Clinical References

    • •
      CDC Guidelines on Calicivirus

    Coding & Billing References

    • •
      CDC Guidelines on Calicivirus

    Frequently Asked Questions

    What are the common symptoms of calicivirus enteritis?

    Common symptoms include diarrhea, vomiting, abdominal cramps, and nausea, typically appearing 24-48 hours after exposure.

    How is calicivirus enteritis diagnosed?

    Diagnosis is primarily based on clinical symptoms and can be confirmed through laboratory testing for the virus.