ICD-10 Code C93.92 – Monocytic leukemia, unspecified in relapse (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C93.92 – Monocytic leukemia, unspecified in relapse
What it is
This code identifies monocytic leukemia that has returned after a period of remission. Use it when the record states relapse and does not specify a more detailed subtype.
Clinical signs
Clinical features vary; refer to documentation. Patients may show findings consistent with recurrent leukemia, such as fatigue, infections, bruising, or abnormal blood counts, but you should code only what is documented.
When to use this code
Use C93.92 when the provider documents monocytic leukemia in relapse and does not name a more specific category. It applies to recurrent disease after prior response or remission. If the note is unclear, check documentation before assigning the code.
Do not use for
Do not use this code for monocytic leukemia without relapse, remission status, or a different leukemia type. If the chart only says “history of leukemia” or gives another subtype, select the documented diagnosis instead.
Coding tip
Confirm both the leukemia type and the relapse status in the current encounter note before coding.