Other specified leukemias, in relapse

This code signifies a type of leukemia that doesn't fit into other specific categories, such as acute myeloid or chronic lymphocytic leukemia, and has returned after a period of remission. It indicates a recurrence of the disease following prior treatment.

Apply this code when documentation specifies a leukemia that is not otherwise classified (e.g., atypical leukemia, myelodysplastic/myeloproliferative neoplasm with features of leukemia) and explicitly states that the disease is in relapse. This is typically used for patients undergoing treatment for a recurrence of their leukemia.

• Ensure the documentation clearly distinguishes "other specified" from "unspecified" leukemias.
• Always sequence this code after the primary leukemia code if the patient is in active treatment for the relapse.
• Verify that the medical record explicitly states "in relapse" to support the use of this subcategory.