ICD-10-CM Code B44


Version 2020 Non-Billable Code

Not Valid for Submission

B44 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of aspergillosis. The code is NOT valid for the year 2020 for the submission of HIPAA-covered transactions.

Short Description:Aspergillosis
Long Description:Aspergillosis

Consider the following ICD-10 codes with a higher level of specificity:

  • B44.0 - Invasive pulmonary aspergillosis
  • B44.1 - Other pulmonary aspergillosis
  • B44.2 - Tonsillar aspergillosis
  • B44.7 - Disseminated aspergillosis
  • B44.8 - Other forms of aspergillosis
  • B44.81 - Allergic bronchopulmonary aspergillosis
  • B44.89 - Other forms of aspergillosis
  • B44.9 - ... unspecified

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code B44:


This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
  • aspergilloma

Clinical Information

  • 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.
  • NEUROASPERGILLOSIS-. infections of the nervous system caused by fungi of the genus aspergillus most commonly aspergillus fumigatus. aspergillus infections may occur in immunocompetent hosts but are more prevalent in individuals with immunologic deficiency syndromes. the organism may spread to the nervous system from focal infections in the lung mastoid region sinuses inner ear bones eyes gastrointestinal tract and heart. sinus infections may be locally invasive and enter the intracranial compartment producing meningitis fungal; cranial neuropathies; and abscesses in the frontal lobes of the brain. from joynt clinical neurology 1998 ch 27 pp62 3
  • PULMONARY ASPERGILLOSIS-. infections of the respiratory tract with fungi of the genus aspergillus.
  • 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.

Code Classification

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Aspergillosis is a disease caused by a fungus (or mold) called Aspergillus. The fungus is very common in both indoors and outdoors. Most people breathe in the spores of the fungus every day without being affected. But some people get the disease. It usually occurs in people with lung diseases or weakened immune systems.

There are different kinds of aspergillosis. One kind is allergic bronchopulmonary aspergillosis (also called ABPA). Symptoms of ABPA include wheezing and coughing. ABPA can affect healthy people but it is most common in people with asthma or cystic fibrosis.

Another kind is invasive aspergillosis, which damages tissues in the body. It usually affects the lungs. Sometimes it can also cause infection in other organs and spread throughout the body. It affects people who have immune system problems, such as people who have had a transplant, are taking high doses of steroids, or getting chemotherapy for some cancers.

Your doctor might do a variety of tests to make the diagnosis, including a chest x-ray, CT scan of the lungs, and an examination of tissues for signs of the fungus. Treatment is with antifungal drugs. If you have ABPA, you may also take steroids.

Centers for Disease Control and Prevention

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