ICD-10 Code B55 – Leishmaniasis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B55 – Leishmaniasis
What it is
B55 identifies leishmaniasis, a parasitic infection caused by Leishmania species. It may affect the skin, mucous membranes, or internal organs, depending on the organism and exposure history.
Clinical signs
Clinical features vary; refer to documentation. Common findings include chronic skin ulcers, mucosal lesions, or systemic illness with fever, weight loss, and organ enlargement in visceral disease.
When to use this code
Use B55 when the provider documents leishmaniasis without a more specific site or form. It also fits confirmed cases where the record does not distinguish cutaneous, mucocutaneous, or visceral disease. Check documentation for species, presentation, and any added specificity.
Do not use for
Do not use B55 for suspected exposure alone or for nonspecific skin sores without a documented leishmaniasis diagnosis. If another parasitic infection is named, code that condition instead.
Coding tip
Review the note for the clinical form of leishmaniasis; if the site or type is documented, code to the most specific available option.