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ICD-10 Guide
ICD-10 CodesA92.1

A92.1

Chikungunya virus disease

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

Code Description

ICD-10 A92.1 is a billable code used to indicate a diagnosis of chikungunya virus disease.

Key Diagnostic Point:

Chikungunya virus disease is an arthropod-borne viral infection caused by the chikungunya virus (CHIKV), primarily transmitted to humans through the bite of infected Aedes mosquitoes, particularly Aedes aegypti and Aedes albopictus. The disease is characterized by an abrupt onset of fever, severe joint pain, and rash. Other symptoms may include headache, muscle pain, and fatigue. The joint pain can be debilitating and may persist for weeks to months, leading to chronic arthralgia in some patients. Chikungunya is endemic in tropical and subtropical regions, and outbreaks have been reported in Africa, Asia, Europe, and the Americas. Travel history is crucial in diagnosing chikungunya, as it helps to identify potential exposure to the virus. Laboratory confirmation is typically achieved through serological tests or polymerase chain reaction (PCR) assays. While chikungunya is rarely fatal, it can lead to significant morbidity due to the severe joint pain and associated complications. Public health measures focus on mosquito control and prevention of bites, especially in endemic areas.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Need for accurate travel history documentation
  • Differentiation from other arboviral infections (e.g., dengue, Zika)
  • Potential for chronic symptoms requiring long-term follow-up
  • Variability in symptom presentation among patients

Audit Risk Factors

  • Inadequate documentation of travel history
  • Failure to document laboratory confirmation
  • Misdiagnosis due to symptom overlap with other diseases
  • Lack of follow-up documentation for chronic symptoms

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed travel history, symptom onset, and laboratory results.

Common Clinical Scenarios

Patients presenting with fever and joint pain after travel to endemic areas.

Billing Considerations

Consideration of co-infections with other arboviruses.

Primary Care

Documentation Requirements

Comprehensive patient history including travel and symptom duration.

Common Clinical Scenarios

Patients with acute febrile illness and joint pain.

Billing Considerations

Monitoring for chronic joint pain and referral to specialists if needed.

Coding Guidelines

Inclusion Criteria

Use A92.1 When
  • 10 coding guidelines specify that A92
  • 1 should be used when the diagnosis is confirmed and when the patient has a history of travel to endemic areas

Exclusion Criteria

Do NOT use A92.1 When
  • Exclusion criteria include other viral infections with similar presentations unless confirmed

Related CPT Codes

86769CPT Code

Chikungunya virus antibody test

Clinical Scenario

Used for serological confirmation of chikungunya.

Documentation Requirements

Document the reason for testing and results.

Specialty Considerations

Infectious disease specialists may order this test more frequently.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of chikungunya, improving data collection and epidemiological tracking of the disease.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of chikungunya, improving data collection and epidemiological tracking of the disease.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of chikungunya, improving data collection and epidemiological tracking of the disease.

Resources

Clinical References

  • •
    CDC Chikungunya Virus

Coding & Billing References

  • •
    CDC Chikungunya Virus

Frequently Asked Questions

What is the primary mode of transmission for chikungunya?

Chikungunya is primarily transmitted through the bite of infected Aedes mosquitoes.

How can I differentiate chikungunya from dengue fever?

While both are transmitted by mosquitoes and can cause fever and joint pain, chikungunya typically presents with more severe joint pain and a rash, and it is crucial to document travel history and laboratory results for accurate diagnosis.