ICD-10 Code B47.0 – Eumycetoma (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B47.0 – Eumycetoma
What it is
Eumycetoma is a chronic fungal infection that usually affects the skin and deeper tissues, most often in the foot. It causes slowly progressive swelling and can spread into subcutaneous tissue and bone.
Clinical signs
Typical findings include a painless or mildly painful swelling, draining sinuses, and granules in the discharge. Clinical features vary; refer to documentation when the organism or extent of disease is not clearly stated.
When to use this code
Use B47.0 when the record specifically documents eumycetoma or fungal mycetoma. Apply it when the clinician identifies a chronic localized fungal infection with sinus tracts or granule-producing lesions, and no other more specific code is documented.
If the note only says “mycetoma” without specifying fungal cause, check documentation before coding. Confirm whether the provider means eumycetoma rather than actinomycetoma or another infection.
Do not use for
Do not use this code for actinomycetoma, which has a different ICD-10 classification. Also avoid it when the diagnosis is unconfirmed or the chart only describes a nonspecific foot abscess or wound.
Coding tip
Look for explicit wording such as “eumycetoma,” “fungal mycetoma,” or a documented fungal organism before assigning B47.0.