ICD-10 Code B48.3 – Geotrichosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B48.3 – Geotrichosis
What it is
Geotrichosis is a fungal infection caused by Geotrichum species. Use this code when the record documents geotrichosis as the diagnosed condition.
Clinical signs
Clinical features vary; refer to documentation. Reported findings may include infection of the lungs, skin, or other tissues, but you should code only when the provider identifies geotrichosis.
When to use this code
Use B48.3 when the clinician documents geotrichosis, geotrichum infection, or a confirmed diagnosis supported in the chart. It may appear in infectious disease, pulmonary, or pathology documentation. If the note only says fungal infection without naming the organism, check documentation.
Do not use for
Do not use this code for nonspecific candidiasis, dermatophyte infection, or other fungal diseases unless geotrichosis is specifically documented. Do not assume the diagnosis from colonization alone.
Coding tip
Match the code to the organism named by the provider; if geotrichosis is not explicit, verify the record before assigning B48.3.