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ICD-10 Guide
ICD-10 CodesA21.1

A21.1

Tularaemia

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

Code Description

ICD-10 A21.1 is a billable code used to indicate a diagnosis of tularaemia.

Key Diagnostic Point:

Tularaemia, also known as rabbit fever, is an infectious disease caused by the bacterium Francisella tularensis. It is primarily a zoonotic infection, meaning it is transmitted from animals to humans. The disease can manifest in various forms, including ulceroglandular, glandular, oculoglandular, oropharyngeal, and pneumonic, depending on the route of infection. Common transmission vectors include direct contact with infected animals, bites from infected insects (such as ticks and deer flies), inhalation of contaminated aerosols, or ingestion of contaminated food or water. Symptoms typically include fever, chills, headache, muscle aches, and fatigue, often accompanied by localized symptoms depending on the form of the disease. Public health considerations are significant due to the potential for outbreaks, particularly in areas where wildlife is prevalent. Surveillance and control measures are essential to prevent transmission, especially in occupational settings where individuals may come into contact with infected animals. Prompt diagnosis and treatment with appropriate antibiotics are crucial for effective management of the disease.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of clinical presentations requiring accurate identification
  • Potential for misdiagnosis with other febrile illnesses
  • Need for specific laboratory confirmation of the pathogen
  • Documentation of exposure history to animals or vectors

Audit Risk Factors

  • Inadequate documentation of exposure history
  • Failure to specify the clinical form of tularaemia
  • Misclassification of symptoms related to other conditions
  • Lack of laboratory confirmation in medical records

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed patient history including exposure risks, symptom onset, and laboratory results.

Common Clinical Scenarios

Patients presenting with febrile illness after exposure to wildlife or insect bites.

Billing Considerations

Ensure all clinical forms of tularaemia are documented to support accurate coding.

Public Health

Documentation Requirements

Surveillance data, outbreak reports, and epidemiological studies.

Common Clinical Scenarios

Monitoring and reporting cases in endemic areas or during outbreaks.

Billing Considerations

Focus on community exposure risks and preventive measures.

Coding Guidelines

Inclusion Criteria

Use A21.1 When
  • Follow official ICD
  • 10 coding guidelines, ensuring accurate documentation of the clinical presentation and exposure history
  • Include any relevant laboratory confirmation and specify the clinical form of tularaemia when applicable

Exclusion Criteria

Do NOT use A21.1 When
No specific exclusions found.

Related CPT Codes

87070CPT Code

Culture, bacterial, any source

Clinical Scenario

When laboratory confirmation of tularaemia is needed.

Documentation Requirements

Document the source of the culture and clinical suspicion of tularaemia.

Specialty Considerations

Infectious disease specialists should ensure proper specimen handling.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of tularaemia, improving the ability to track and manage this zoonotic infection. Enhanced specificity aids in public health reporting and epidemiological studies.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of tularaemia, improving the ability to track and manage this zoonotic infection. Enhanced specificity aids in public health reporting and epidemiological studies.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of tularaemia, improving the ability to track and manage this zoonotic infection. Enhanced specificity aids in public health reporting and epidemiological studies.

Resources

Clinical References

  • •
    Centers for Disease Control and Prevention (CDC) - Tularemia

Coding & Billing References

  • •
    Centers for Disease Control and Prevention (CDC) - Tularemia

Frequently Asked Questions

What are the common symptoms of tularaemia?

Common symptoms include fever, chills, headache, muscle aches, and localized symptoms such as swollen lymph nodes or respiratory issues, depending on the form of the disease.

How is tularaemia transmitted?

Tularaemia is transmitted through contact with infected animals, bites from infected insects, inhalation of contaminated aerosols, or ingestion of contaminated food or water.

What is the treatment for tularaemia?

Tularaemia is typically treated with antibiotics such as streptomycin or doxycycline, and early treatment is crucial for effective management.