ICD-10 Code B60.01 – Babesiosis due to Babesia microti (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B60.01 – Babesiosis due to Babesia microti
What it is
B60.01 identifies babesiosis caused by Babesia microti, a tick-borne parasitic infection that affects red blood cells. Use it when the record specifies B. microti as the cause.
Clinical signs
Common findings include fever, chills, fatigue, hemolytic anemia, and sometimes jaundice. Clinical features vary; refer to documentation for the confirmed organism and presentation.
When to use this code
Use B60.01 when the provider documents babesiosis due to Babesia microti, or when lab or pathology results clearly identify that species. It also fits confirmed cases described as microti-associated babesiosis. If the organism is not specified, check documentation before assigning this code.
Do not use for
Do not use this code for babesiosis caused by another Babesia species or for an unspecified babesiosis diagnosis. Check documentation if the chart only says “babesiosis” without naming Babesia microti.
Coding tip
Code the specific species only when the record supports it; otherwise, use the unspecified babesiosis option or query the provider.