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v1.0.0
ICD-10 Guide
ICD-10 CodesB34.1

B34.1

B34.1 - Hantavirus (cardio)-pulmonary syndrome

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

Code Description

ICD-10 B34.1 is a billable code used to indicate a diagnosis of b34.1 - hantavirus (cardio)-pulmonary syndrome.

Key Diagnostic Point:

Hantavirus cardio-pulmonary syndrome (HCPS) is a severe respiratory illness caused by hantaviruses, primarily transmitted to humans through contact with infected rodent excreta, urine, or saliva. The disease is characterized by a sudden onset of fever, myalgia, and gastrointestinal symptoms, which can progress to severe pulmonary edema and respiratory failure. The incubation period typically ranges from 1 to 5 weeks following exposure. Diagnostic methods include serological tests for hantavirus antibodies, PCR assays to detect viral RNA, and clinical evaluation of symptoms. Early recognition and supportive care are crucial, as there are currently no specific antiviral treatments approved for HCPS. Management focuses on maintaining oxygenation and fluid balance, with mechanical ventilation required in severe cases. The prognosis varies, with a higher mortality rate in patients who develop severe respiratory distress.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of hantavirus strains with differing clinical presentations
  • Need for specific laboratory confirmation methods
  • Potential for misdiagnosis with other respiratory illnesses
  • Variability in symptom onset and progression

Audit Risk Factors

  • Inadequate documentation of exposure history
  • Failure to document laboratory confirmation
  • Misclassification of symptoms as other respiratory conditions
  • Lack of detailed clinical notes on disease progression

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed patient history, exposure assessment, and laboratory results.

Common Clinical Scenarios

Patients presenting with respiratory symptoms after potential rodent exposure.

Billing Considerations

Ensure thorough documentation of serological and PCR test results.

Pulmonology

Documentation Requirements

Clinical assessment of respiratory function and treatment interventions.

Common Clinical Scenarios

Patients with acute respiratory distress requiring hospitalization.

Billing Considerations

Document all interventions and patient responses to treatment.

Coding Guidelines

Inclusion Criteria

Use B34.1 When
  • Follow ICD
  • CM guidelines for coding infectious diseases, ensuring accurate documentation of symptoms, exposure history, and laboratory confirmation
  • Include any relevant co
  • morbid conditions that may affect treatment

Exclusion Criteria

Do NOT use B34.1 When
No specific exclusions found.

Related CPT Codes

86790CPT Code

Hantavirus antibody test

Clinical Scenario

Used to confirm diagnosis in suspected cases of HCPS.

Documentation Requirements

Document the reason for testing and clinical findings.

Specialty Considerations

Infectious disease specialists should ensure comprehensive documentation of exposure history.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of hantavirus infections, improving data accuracy and facilitating better tracking of disease incidence and outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of hantavirus infections, improving data accuracy and facilitating better tracking of disease incidence and outcomes.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of hantavirus infections, improving data accuracy and facilitating better tracking of disease incidence and outcomes.

Resources

Clinical References

  • •
    CDC Hantavirus Information

Coding & Billing References

  • •
    CDC Hantavirus Information

Frequently Asked Questions

What are the common symptoms of Hantavirus cardio-pulmonary syndrome?

Common symptoms include fever, myalgia, gastrointestinal symptoms, and severe respiratory distress. Symptoms can progress rapidly, leading to pulmonary edema.