Aspergillosis (B44) ICD-10-CM
The B44 code range covers aspergillosis with 9 ICD-10-CM diagnosis codes. 7 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Code Also
A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.
Codes in the B44 Range 9 codes · 7 billable
- B44 AspergillosisNon-billable
- B44.0 Invasive pulmonary aspergillosis
- B44.1 Other pulmonary aspergillosis
- B44.2 Tonsillar aspergillosis
- B44.7 Disseminated aspergillosis
- B44.8 Other forms of aspergillosisNon-billable
- B44.81 Allergic bronchopulmonary aspergillosis
- B44.89 Other forms of aspergillosis
- B44.9 Aspergillosis, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the B44 range.
Aspergillosis
Infections with fungi of the genus ASPERGILLUS.
Aspergillosis, Allergic Bronchopulmonary
Hypersensitivity reaction (ALLERGIC REACTION) to fungus ASPERGILLUS in an individual with long-standing BRONCHIAL ASTHMA. It is characterized by pulmonary infiltrates, EOSINOPHILIA, elevated serum IMMUNOGLOBULIN E, and skin reactivity to Aspergillus antigen.
Invasive Pulmonary Aspergillosis
Lung infections with the invasive forms of ASPERGILLUS, usually after surgery, transplantation, prolonged NEUTROPENIA or treatment with high-doses of CORTICOSTEROIDS. Invasive pulmonary aspergillosis can progress to CHRONIC NECROTIZING PULMONARY ASPERGILLOSIS or hematogenous spread to other organs.
About the B44 Code Range
Aspergillosis is an infection caused by Aspergillus fungi. Its codes distinguish lung disease from disease involving the tonsils, disease that has spread, and other forms.
B44.0 identifies invasive lung aspergillosis, while B44.1 identifies other lung aspergillosis. B44.2 identifies tonsillar disease, and B44.7 identifies disease that has spread.
The other-forms branch, B44.8, separates allergic airway and lung involvement, B44.81, from other forms, B44.89. B44.9 identifies aspergillosis without a specified form.
Questions About This Page
How many billable codes are in the B44 range?
Of the 9 codes in this range, 7 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the B44 range classify?
The range classifies aspergillosis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
