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v1.0.0
ICD-10 Guide
ICD-10 CodesA96.8

A96.8

Other specified mosquito-borne viral fevers

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 A96.8 is a billable code used to indicate a diagnosis of other specified mosquito-borne viral fevers.

Key Diagnostic Point:

A96.8 encompasses various viral infections transmitted by mosquitoes that do not fall under more specific categories. These infections can include viruses such as Zika, Chikungunya, and others that may present with fever, rash, arthralgia, and conjunctivitis. The clinical presentation can vary widely, with some patients experiencing mild symptoms while others may develop severe complications, including hemorrhagic manifestations. The diagnosis often requires a thorough travel history, as many of these infections are endemic to specific regions. Laboratory confirmation through serology or PCR testing is essential for accurate diagnosis. Given the potential for outbreaks and the public health implications, understanding the epidemiology and transmission dynamics of these viruses is crucial for effective management and prevention strategies.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of mosquito-borne viruses included under this code
  • Need for detailed travel history to ascertain exposure risk
  • Differentiation from other viral fevers and conditions
  • Potential for overlapping symptoms with other diseases

Audit Risk Factors

  • Inadequate documentation of travel history
  • Failure to specify the exact virus when known
  • Misclassification of symptoms as non-specific viral illness
  • Lack of laboratory confirmation in the medical record

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed travel history, symptomatology, and laboratory results must be documented.

Common Clinical Scenarios

Patients presenting with fever and rash after travel to endemic areas.

Billing Considerations

Consideration of co-infections and differential diagnoses is crucial.

Emergency Medicine

Documentation Requirements

Immediate assessment of symptoms, travel history, and potential exposure.

Common Clinical Scenarios

Patients with acute febrile illness returning from tropical regions.

Billing Considerations

Rapid identification and isolation protocols may be necessary.

Coding Guidelines

Inclusion Criteria

Use A96.8 When
  • According to ICD
  • 10 guidelines, A96
  • 8 should be used when the specific mosquito
  • borne viral fever is not classified elsewhere
  • It is essential to document the patient's travel history and clinical presentation accurately

Exclusion Criteria

Do NOT use A96.8 When
No specific exclusions found.

Related CPT Codes

86790CPT Code

Antibody test for viral infections

Clinical Scenario

Used when testing for specific mosquito-borne viruses.

Documentation Requirements

Document the reason for testing and the specific symptoms.

Specialty Considerations

Infectious disease specialists may require additional serological tests.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of mosquito-borne viral fevers, improving data collection and epidemiological tracking.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of mosquito-borne viral fevers, improving data collection and epidemiological tracking.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of mosquito-borne viral fevers, improving data collection and epidemiological tracking.

Resources

Clinical References

  • •
    CDC Mosquito-Borne Diseases

Coding & Billing References

  • •
    CDC Mosquito-Borne Diseases

Frequently Asked Questions

What should I document to support the use of A96.8?

Document the patient's travel history, symptoms, and any laboratory tests performed to confirm the diagnosis.