Acute leukemia of unspecified cell type, in remission

This code signifies a current diagnosis of acute leukemia where the specific cell type (e.g., myeloid, lymphoid) has not been documented, and the patient is currently in a state of remission. Remission indicates that the signs and symptoms of the leukemia have significantly decreased or disappeared, often due to successful treatment.

Use this code when documentation clearly states "acute leukemia, unspecified cell type, in remission." This typically applies to follow-up encounters for patients who have undergone treatment for acute leukemia and are now in a disease-free state, but the original cell type was not specified or is unknown.

• Do not use this code if the specific cell type of the acute leukemia (e.g., acute lymphoblastic, acute myeloid) is documented; instead, use a more specific code from the C91 or C92 series.
• Ensure documentation explicitly states "in remission" for this code to be appropriate. If the patient is not in remission, a different code indicating active disease would be required.
• This code is a primary diagnosis when the patient is being seen for follow-up of the leukemia in remission.