ICD-10 Code C93.32 – Juvenile myelomonocytic leukemia, in relapse (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C93.32 – Juvenile myelomonocytic leukemia, in relapse
What it is
C93.32 identifies juvenile myelomonocytic leukemia that has returned after remission. Use it when the record clearly states relapse or recurrent disease in a child with this rare myeloproliferative/myelodysplastic leukemia.
Clinical signs
Clinical features vary; refer to documentation. Commonly documented findings may include persistent or recurrent leukocytosis, monocytosis, splenomegaly, anemia, thrombocytopenia, or blast increase, but you should code only what is recorded.
When to use this code
Use this code when the provider documents relapsed juvenile myelomonocytic leukemia, recurrent JMML, or return of disease after prior remission. It is appropriate for encounters focused on evaluation, monitoring, or management of the relapse. Check documentation if the note only mentions history of JMML without current relapse.
Do not use for
Do not use this code for initial JMML diagnosis, remission status, or unspecified leukemia recurrence. If the chart does not clearly state relapse, check documentation before assigning C93.32.
Coding tip
Link the code to the provider’s exact wording for relapse and avoid substituting it for a past history of JMML.