ICD-10-CM
ICD-10 code for Aspergillosis: B44.9
The ICD-10-CM index points "Aspergillosis" to B44 (Aspergillosis), a header that is not billable. When nothing more specific is documented, the billable code is B44.9, Aspergillosis, unspecified.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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Index subterms
A header groups codes and is not billed. A billable code is one you can report.
- B44.81bronchopulmonary, allergic, Allergic bronchopulmonary aspergillosisBillable
- B44.7disseminated, Disseminated aspergillosisBillable
- B44.7generalized, Disseminated aspergillosisBillable
- B44.1pulmonary NEC, Other pulmonary aspergillosisBillable
- B44.89specified NEC, Other forms of aspergillosisBillable
- B44.2tonsillar, Tonsillar aspergillosisBillable
More specific codes in B44
A header groups codes and is not billed. A billable code is one you can report.
- B44AspergillosisHeader
- B44.0Invasive pulmonary aspergillosisBillable
- B44.1Other pulmonary aspergillosisBillable
- B44.2Tonsillar aspergillosisBillable
- B44.7Disseminated aspergillosisBillable
- B44.8Other forms of aspergillosisHeader
- B44.81Allergic bronchopulmonary aspergillosisBillable
- B44.89Other forms of aspergillosisBillable
- B44.9Aspergillosis, unspecifiedBillable
Code also
The CDC tabular list says a second code may be needed with this one. The note does not set which is listed first.
From B44. A note on a category applies to every code under it.
Code also, if applicable:
- aspergilloma of other site - code to chronic infection of site
- J4BPulmonary aspergilloma
- J4BPulmonary aspergillosis fungal ball
- J4BPulmonary mycetoma
- J32.-Sinus aspergilloma
Related conditions
Related pages
- B44.9 code detailsNotes, nearby codes, CMS-HCC group
- Category B44Every code under it
- Chapter 1Certain infectious and parasitic diseases
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Aspergillosis?
The ICD-10-CM index points "Aspergillosis" to B44 (Aspergillosis), a header that is not billable. When nothing more specific is documented, the billable code is B44.9, Aspergillosis, unspecified.
Is B44.9 billable?
Yes. B44.9 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What chapter is B44.9 in?
Chapter 1. Certain infectious and parasitic diseases.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.