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v1.0.0
ICD-10 Guide
ICD-10 CodesB44.0

B44.0

Disseminated aspergillosis

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

Code Description

ICD-10 B44.0 is a billable code used to indicate a diagnosis of disseminated aspergillosis.

Key Diagnostic Point:

Disseminated aspergillosis is a severe form of fungal infection caused by the Aspergillus species, primarily Aspergillus fumigatus. This condition typically occurs in immunocompromised patients, such as those undergoing chemotherapy, organ transplantation, or those with advanced HIV/AIDS. The infection can spread from the lungs to other organs, including the brain, kidneys, and skin, leading to systemic illness. Symptoms may include fever, cough, chest pain, and respiratory distress, along with signs of organ dysfunction depending on the sites of dissemination. Diagnosis often involves imaging studies, such as CT scans, and microbiological cultures or histopathological examination of tissue samples. Treatment usually requires aggressive antifungal therapy, often with voriconazole or amphotericin B, and may necessitate surgical intervention in cases of localized disease. Early recognition and management are critical to improving outcomes in affected patients.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Requires understanding of fungal infections and their systemic implications.
  • Involves coding for immunocompromised status, which may vary by patient.
  • Differentiation from other fungal infections can be challenging.
  • Documentation must clearly indicate the extent of dissemination.

Audit Risk Factors

  • Inadequate documentation of immunocompromised status.
  • Failure to specify the extent of dissemination.
  • Misclassification of the infection type.
  • Lack of supporting diagnostic imaging or lab results.

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed clinical notes on the patient's immunocompromised 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 diagnostic criteria and treatment responses are well-documented to support coding.

Pulmonology

Documentation Requirements

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

Common Clinical Scenarios

Patients with respiratory distress and confirmed or suspected fungal infections.

Billing Considerations

Document any co-existing lung conditions that may complicate the diagnosis.

Coding Guidelines

Inclusion Criteria

Use B44.0 When
  • According to the ICD
  • CM coding guidelines, B44
  • 0 should be used when the infection is confirmed to be disseminated
  • Coders must ensure that documentation supports the diagnosis and that any underlying immunocompromised conditions are also coded

Exclusion Criteria

Do NOT use B44.0 When
No specific exclusions found.

Related CPT Codes

88305CPT Code

Pathology examination, surgical

Clinical Scenario

Used when tissue samples are taken for histopathological examination to confirm aspergillosis.

Documentation Requirements

Pathology reports must be included in the medical record.

Specialty Considerations

Ensure that the pathology report clearly indicates the presence of Aspergillus.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of disseminated aspergillosis, improving the ability to track and manage this serious condition. It has also enhanced the granularity of data for research and epidemiological studies.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of disseminated aspergillosis, improving the ability to track and manage this serious condition. It has also enhanced the granularity of data for research and epidemiological studies.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of disseminated aspergillosis, improving the ability to track and manage this serious condition. It has also enhanced the granularity of data for research and epidemiological studies.

Resources

Clinical References

  • •
    CDC Fungal Diseases

Coding & Billing References

  • •
    CDC Fungal Diseases

Frequently Asked Questions

What are the common symptoms of disseminated aspergillosis?

Common symptoms include fever, cough, chest pain, and respiratory distress, along with signs of organ dysfunction depending on the sites of dissemination.

How is disseminated aspergillosis diagnosed?

Diagnosis typically involves imaging studies, microbiological cultures, and histopathological examination of tissue samples.

What treatments are available for disseminated aspergillosis?

Treatment usually requires aggressive antifungal therapy, often with voriconazole or amphotericin B, and may necessitate surgical intervention in cases of localized disease.