ICD-10 Code B44.8 – Other forms of aspergillosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B44.8 – Other forms of aspergillosis
What it is
B44.8 identifies aspergillosis that does not fit a more specific ICD-10 category. Use it for documented Aspergillus infection when the site or presentation is described as other or atypical.
Clinical signs
Clinical features vary by organ involved and may include respiratory symptoms, fever, or evidence of invasive fungal disease. Refer to documentation for the specific manifestation and confirm Aspergillus involvement.
When to use this code
Use B44.8 when the provider documents aspergillosis but does not specify allergic bronchopulmonary, aspergilloma, or another listed subtype. It also fits cases labeled “other” or unusual presentations not assigned elsewhere. If the record names a different Aspergillus-related condition, code that condition instead.
Do not use for
Do not use this code for allergic bronchopulmonary aspergillosis, aspergilloma, or unspecified aspergillosis when a more exact code is available. Check documentation if the diagnosis is only suspected.
Coding tip
Before assigning B44.8, verify that the note supports aspergillosis and that no more specific subtype is documented.