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v1.0.0
ICD-10 Guide
ICD-10 CodesA77

A77

Dengue fever

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

Code Description

ICD-10 A77 is a billable code used to indicate a diagnosis of dengue fever.

Key Diagnostic Point:

Dengue fever is a mosquito-borne viral infection caused by the dengue virus, which is transmitted primarily by Aedes aegypti and Aedes albopictus mosquitoes. The disease is endemic in tropical and subtropical regions worldwide, particularly in urban and semi-urban areas. Clinically, dengue fever presents with a sudden onset of high fever, severe headache, retro-orbital pain, myalgia, arthralgia, and rash. In some cases, it can progress to severe dengue, characterized by plasma leakage, hemorrhagic manifestations, and organ impairment, which can be life-threatening. Diagnosis is primarily based on clinical presentation and serological tests for dengue-specific antibodies or viral RNA. The World Health Organization (WHO) has established guidelines for the classification of dengue severity, which is crucial for management and treatment. Preventive measures focus on vector control and personal protective measures against mosquito bites. Given the global increase in travel and climate change, dengue fever has become a significant public health concern, necessitating accurate coding for effective surveillance and resource allocation.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of clinical presentations ranging from mild to severe
  • Differentiation from other febrile illnesses
  • Need for accurate documentation of travel history
  • Potential for co-infection with other vector-borne diseases

Audit Risk Factors

  • Inadequate documentation of travel history
  • Failure to specify the severity of the disease
  • Misclassification of dengue as another febrile illness
  • Lack of supporting laboratory results

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed clinical notes including travel history, symptom onset, and laboratory results.

Common Clinical Scenarios

Patients presenting with fever and travel history to endemic areas.

Billing Considerations

Ensure documentation reflects the severity of the disease and any complications.

Emergency Medicine

Documentation Requirements

Immediate assessment notes, including vital signs and initial lab results.

Common Clinical Scenarios

Patients with acute febrile illness presenting to the emergency department.

Billing Considerations

Timely documentation is crucial for coding severity and potential complications.

Coding Guidelines

Inclusion Criteria

Use A77 When
  • Follow the official ICD
  • CM coding guidelines, ensuring accurate documentation of the patient's clinical presentation, travel history, and any laboratory findings
  • Include specific details about the severity of the disease when applicable

Exclusion Criteria

Do NOT use A77 When
No specific exclusions found.

Related Codes

Child Codes

10 codes
A77.0
Meliodosis
A77.1
Botulism.
A77.2
Toxoplasmosis, unspecified
A77.3
Q fever
A77.4
Rocky Mountain spotted fever
A77.40
Ehrlichiosis, unspecified
A77.41
Ehrlichiosis chaffeensis [E. chaffeensis]
A77.49
Other ehrlichiosis
A77.8
Other specified spotted fevers
A77.9
Dengue fever, unspecified

Related CPT Codes

86790CPT Code

Dengue virus serology

Clinical Scenario

Used when serological testing for dengue is performed.

Documentation Requirements

Document the reason for testing and any relevant clinical findings.

Specialty Considerations

Infectious disease specialists should ensure comprehensive documentation of the patient's history and symptoms.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of dengue fever, improving the ability to track and manage outbreaks and patient outcomes. It emphasizes the importance of detailed clinical documentation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of dengue fever, improving the ability to track and manage outbreaks and patient outcomes. It emphasizes the importance of detailed clinical documentation.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of dengue fever, improving the ability to track and manage outbreaks and patient outcomes. It emphasizes the importance of detailed clinical documentation.

Resources

Clinical References

  • •
    World Health Organization - Dengue and Severe Dengue

Coding & Billing References

  • •
    World Health Organization - Dengue and Severe Dengue

Frequently Asked Questions

What are the common symptoms of dengue fever?

Common symptoms include high fever, severe headache, pain behind the eyes, joint and muscle pain, rash, and mild bleeding. Severe cases may lead to hemorrhagic manifestations and shock.