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B44

Non-billable

Aspergillosis

B44 is the ICD-10-CM code for Aspergillosis. It is a non-billable category code — use a more specific child code such as B44.0 for billing.

Status
Header (non-billable)
Chapter
A00-B99
Subcodes
6
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

What this means — in plain language

MedlinePlus · NIH

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…

Read more about Aspergillosis at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

Includes

  • •aspergilloma

Frequently asked questions

What is ICD-10 code B44?
B44 is the ICD-10-CM code for "Aspergillosis". It falls under A00-B99 Certain infectious and parasitic diseases.
Is B44 a billable code?
No — B44 is a non-billable header code. Use a more specific child code (such as B44.0) for billing.
What are the subcodes of B44?
B44 has 6 more specific child codes, including B44.0, B44.1, B44.2.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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