ICD-10 Code B55.0 – Visceral leishmaniasis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B55.0 – Visceral leishmaniasis
What it is
Visceral leishmaniasis is a parasitic infection that affects internal organs, especially the spleen, liver, and bone marrow. You use this code for the systemic form of leishmaniasis, not skin-limited disease.
Clinical signs
Typical findings include prolonged fever, weight loss, enlarged spleen or liver, and anemia. Clinical features vary; refer to documentation.
When to use this code
Use B55.0 when the record clearly documents visceral leishmaniasis, kala-azar, or systemic leishmanial infection. This applies when the provider identifies organ involvement rather than cutaneous or mucocutaneous disease. Check documentation if the site or form is not specified.
Do not use for
Do not use this code for cutaneous leishmaniasis or mucocutaneous leishmaniasis. If the note only says “leishmaniasis” without specifying visceral disease, you should verify the diagnosis.
Coding tip
Code the documented form of leishmaniasis precisely; the body site and disease type determine the correct ICD-10 code.