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ICD-10 Guide
ICD-10 CodesB44.89

B44.89

Other forms of aspergillosis

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

Code Description

ICD-10 B44.89 is a billable code used to indicate a diagnosis of other forms of aspergillosis.

Key Diagnostic Point:

Aspergillosis is a fungal infection caused by the Aspergillus species, which are ubiquitous in the environment. While the most common form is allergic bronchopulmonary aspergillosis (ABPA), other forms include invasive aspergillosis, chronic pulmonary aspergillosis, and aspergilloma. Patients with compromised immune systems, such as those undergoing chemotherapy, organ transplant recipients, or individuals with HIV/AIDS, are particularly susceptible to invasive forms of the disease. Symptoms can range from mild respiratory issues to severe systemic infections, depending on the patient's immune status and the form of aspergillosis. Diagnosis typically involves imaging studies, such as CT scans, and microbiological cultures. Treatment often includes antifungal medications such as voriconazole or amphotericin B, and in some cases, surgical intervention may be necessary to remove infected tissue. The complexity of managing aspergillosis lies in the variability of clinical presentations and the need for tailored antifungal therapy, especially in immunocompromised patients.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Variety of clinical presentations and forms of aspergillosis
  • Need for precise documentation of immunocompromised status
  • Differentiation from other fungal infections
  • Variability in treatment protocols based on patient condition

Audit Risk Factors

  • Inadequate documentation of the patient's immunocompromised status
  • Failure to specify the exact form of aspergillosis
  • Misclassification of aspergillosis type leading to incorrect coding
  • Lack of supporting diagnostic tests in the medical record

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed clinical notes on the patient's immune status, diagnostic tests performed, and treatment plans.

Common Clinical Scenarios

Patients presenting with respiratory symptoms and a history of immunosuppression.

Billing Considerations

Ensure that all forms of aspergillosis are documented, including any complications.

Pulmonology

Documentation Requirements

Pulmonary function tests, imaging results, and treatment response notes.

Common Clinical Scenarios

Patients with chronic cough, hemoptysis, or lung nodules.

Billing Considerations

Document the patient's history of lung disease and any prior treatments.

Coding Guidelines

Inclusion Criteria

Use B44.89 When
  • Follow the official ICD
  • CM coding guidelines, ensuring accurate documentation of the patient's condition, including the specific type of aspergillosis and any underlying immunocompromised states

Exclusion Criteria

Do NOT use B44.89 When
  • Exclude conditions that are not classified under this code

Related CPT Codes

87481CPT Code

Fungal culture, any source

Clinical Scenario

Used when a fungal infection is suspected and cultures are taken.

Documentation Requirements

Document the source of the culture and clinical indications for testing.

Specialty Considerations

Infectious disease specialists should ensure that the culture results are linked to the diagnosis.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of aspergillosis, improving the accuracy of data collection and treatment tracking. This specificity aids in better understanding the epidemiology of the disease and enhances patient care.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of aspergillosis, improving the accuracy of data collection and treatment tracking. This specificity aids in better understanding the epidemiology of the disease and enhances patient care.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of aspergillosis, improving the accuracy of data collection and treatment tracking. This specificity aids in better understanding the epidemiology of the disease and enhances patient care.

Resources

Clinical References

  • •
    CDC Aspergillosis Information

Coding & Billing References

  • •
    CDC Aspergillosis Information

Frequently Asked Questions

What are the common symptoms of aspergillosis?

Common symptoms include cough, fever, chest pain, and difficulty breathing. In immunocompromised patients, symptoms can be more severe and systemic.

How is aspergillosis diagnosed?

Diagnosis typically involves imaging studies, such as CT scans, and microbiological cultures to confirm the presence of Aspergillus species.

What treatments are available for aspergillosis?

Treatment options include antifungal medications such as voriconazole, amphotericin B, and in some cases, surgical intervention to remove infected tissue.