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ICD-10 Guide
ICD-10 CodesB44.81

B44.81

Allergic bronchopulmonary aspergillosis

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

Code Description

ICD-10 B44.81 is a billable code used to indicate a diagnosis of allergic bronchopulmonary aspergillosis.

Key Diagnostic Point:

Allergic bronchopulmonary aspergillosis (ABPA) is a hypersensitivity reaction to the fungus Aspergillus, primarily Aspergillus fumigatus. It typically occurs in individuals with asthma or cystic fibrosis and is characterized by recurrent episodes of wheezing, coughing, and shortness of breath. The condition is marked by an exaggerated immune response to the fungal spores, leading to airway inflammation and bronchial obstruction. Patients may present with elevated serum IgE levels and specific IgE antibodies to Aspergillus. Diagnosis is often confirmed through clinical history, imaging studies showing central bronchiectasis, and sometimes bronchoscopy with biopsy. Treatment involves the use of corticosteroids to reduce inflammation and antifungal medications, such as itraconazole, to manage fungal colonization. In immunocompromised patients, the risk of developing ABPA is heightened, necessitating careful monitoring and management to prevent severe respiratory complications.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Requires understanding of fungal infections and their immunological responses.
  • Differentiation from other respiratory conditions such as asthma and cystic fibrosis.
  • Need for specific laboratory tests to confirm diagnosis.
  • Potential for co-morbid conditions complicating the clinical picture.

Audit Risk Factors

  • Inadequate documentation of patient history and symptoms.
  • Failure to document laboratory results supporting the diagnosis.
  • Misclassification of ABPA as a simple fungal infection.
  • Lack of clarity in treatment plans and follow-up care.

Specialty Focus

Medical Specialties

Pulmonology

Documentation Requirements

Detailed patient history, including asthma or cystic fibrosis status, and results of allergy testing.

Common Clinical Scenarios

Patients with asthma exacerbations, recurrent respiratory infections, or those with a history of cystic fibrosis.

Billing Considerations

Documentation must clearly differentiate ABPA from other respiratory conditions and include treatment response.

Allergy and Immunology

Documentation Requirements

Comprehensive allergy testing results, including IgE levels and specific fungal sensitivities.

Common Clinical Scenarios

Patients presenting with allergic symptoms and a known history of exposure to Aspergillus.

Billing Considerations

Focus on the immunological aspects of the condition and the patient's overall immune status.

Coding Guidelines

Inclusion Criteria

Use B44.81 When
  • Follow the official ICD
  • CM coding guidelines, ensuring accurate documentation of the patient's clinical presentation, laboratory findings, and treatment plans
  • existing conditions

Exclusion Criteria

Do NOT use B44.81 When
  • Exclude codes for other fungal infections unless they are co

Related CPT Codes

94640CPT Code

Pulmonary function tests

Clinical Scenario

Used to assess lung function in patients with suspected ABPA.

Documentation Requirements

Document the reason for testing and results.

Specialty Considerations

Pulmonologists should ensure tests are relevant to the patient's respiratory condition.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of allergic bronchopulmonary aspergillosis, improving the ability to track and manage this condition in clinical practice. It emphasizes the need for detailed documentation and understanding of the condition's complexities.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of allergic bronchopulmonary aspergillosis, improving the ability to track and manage this condition in clinical practice. It emphasizes the need for detailed documentation and understanding of the condition's complexities.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of allergic bronchopulmonary aspergillosis, improving the ability to track and manage this condition in clinical practice. It emphasizes the need for detailed documentation and understanding of the condition's complexities.

Resources

Clinical References

  • •
    Allergic Bronchopulmonary Aspergillosis: A Guide for Clinicians

Coding & Billing References

  • •
    Allergic Bronchopulmonary Aspergillosis: A Guide for Clinicians

Frequently Asked Questions

What are the common symptoms of allergic bronchopulmonary aspergillosis?

Common symptoms include wheezing, coughing, shortness of breath, and sometimes hemoptysis. Patients may also experience fever and malaise.

How is allergic bronchopulmonary aspergillosis diagnosed?

Diagnosis typically involves a combination of clinical history, elevated serum IgE levels, specific IgE testing for Aspergillus, and imaging studies showing bronchiectasis.

What treatments are available for allergic bronchopulmonary aspergillosis?

Treatment usually includes corticosteroids to reduce inflammation and antifungal medications such as itraconazole to manage fungal colonization.