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v1.0.0
ICD-10 Guide
ICD-10 CodesA98

A98

Other viral hemorrhagic fevers, not elsewhere classified

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

Code Description

ICD-10 A98 is a billable code used to indicate a diagnosis of other viral hemorrhagic fevers, not elsewhere classified.

Key Diagnostic Point:

Viral hemorrhagic fevers (VHFs) are severe, often fatal illnesses characterized by fever and bleeding disorders. They are caused by several distinct families of viruses, many of which are transmitted by arthropods, such as mosquitoes and ticks. This code encompasses VHFs that do not fall under specific classifications, including those caused by less common viruses. Clinically, patients may present with symptoms such as high fever, fatigue, dizziness, and bleeding from mucosal surfaces. Travel history is crucial, as many VHFs are endemic to specific regions, particularly in Africa, South America, and parts of Asia. Accurate diagnosis often requires serological testing and a thorough patient history to identify potential exposure to vectors or infected individuals. The management of VHFs is primarily supportive, focusing on hydration and symptomatic relief, as there are limited antiviral treatments available. Understanding the epidemiology and transmission routes of these viruses is essential for effective coding and patient management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of viral agents causing similar symptoms
  • Need for detailed travel history to establish exposure risk
  • Differentiation from other hemorrhagic fevers (e.g., Ebola, Marburg)
  • Potential for co-infections with other tropical diseases

Audit Risk Factors

  • Inadequate documentation of travel history
  • Failure to specify the type of viral hemorrhagic fever
  • Misclassification of symptoms as non-specific
  • Lack of laboratory confirmation in documentation

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed patient history including travel, exposure, and symptom onset.

Common Clinical Scenarios

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

Billing Considerations

Ensure laboratory results are included to support diagnosis.

Emergency Medicine

Documentation Requirements

Immediate assessment of symptoms and travel history.

Common Clinical Scenarios

Acute presentations of fever and bleeding in patients returning from travel.

Billing Considerations

Rapid identification and isolation protocols may be necessary.

Coding Guidelines

Inclusion Criteria

Use A98 When
  • Follow the official ICD
  • CM coding guidelines for infectious diseases
  • Ensure that the code is used only when the specific viral hemorrhagic fever is not classified elsewhere
  • Document all relevant clinical findings and laboratory results

Exclusion Criteria

Do NOT use A98 When
No specific exclusions found.

Related Codes

Child Codes

7 codes
A98.0
Crimean-Congo hemorrhagic fever
A98.1
Dengue hemorrhagic fever
A98.2
Yellow fever with other visceral involvement
A98.3
Rift Valley fever
A98.4
Crimean-Congo hemorrhagic fever
A98.5
Yellow fever.
A98.8
Other viral hemorrhagic fevers, NEC

Related CPT Codes

87522CPT Code

Nucleic acid amplification test for viral hemorrhagic fever

Clinical Scenario

Used when a patient presents with symptoms consistent with VHF.

Documentation Requirements

Document the reason for testing and any relevant travel history.

Specialty Considerations

Infectious disease specialists should ensure comprehensive documentation.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of viral hemorrhagic fevers, improving data collection and epidemiological tracking. A98 provides a broader classification for less common VHFs, enhancing the ability to capture these cases accurately.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of viral hemorrhagic fevers, improving data collection and epidemiological tracking. A98 provides a broader classification for less common VHFs, enhancing the ability to capture these cases accurately.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of viral hemorrhagic fevers, improving data collection and epidemiological tracking. A98 provides a broader classification for less common VHFs, enhancing the ability to capture these cases accurately.

Resources

Clinical References

  • •
    CDC Viral Hemorrhagic Fever Fact Sheet

Coding & Billing References

  • •
    CDC Viral Hemorrhagic Fever Fact Sheet

Frequently Asked Questions

What should be documented to support the use of code A98?

Document the patient's travel history, symptoms, laboratory results, and any relevant exposure to vectors or infected individuals.