Chronic leukemia of unspecified cell type, in remission

This code signifies a long-term, malignant condition affecting blood-forming cells, where the specific cell lineage (e.g., myeloid, lymphoid) has not been identified, and the disease is currently in a state of remission. Remission indicates a significant reduction or disappearance of signs and symptoms of the leukemia.

Use this code when a patient has a documented history of chronic leukemia, but the specific cell type was never definitively diagnosed or is not specified in the medical record, and the current clinical assessment confirms the disease is in remission. This applies to follow-up encounters for monitoring patients whose chronic leukemia is no longer active.

• Ensure documentation explicitly states "chronic leukemia" and "in remission," and that the cell type is "unspecified."
• Do not use this code if the cell type (e.g., myeloid, lymphoid) is known; instead, select a more specific code from the C92 or C93 series.
• This code is typically a secondary diagnosis, following a code for the reason for the encounter (e.g., chemotherapy follow-up, routine check-up).