Family history of leukemia

This diagnosis code indicates a patient has a family history of leukemia, meaning one or more immediate or extended family members have been diagnosed with any type of leukemia. It signifies an increased genetic predisposition or shared environmental risk factors for the patient, even if the patient themselves does not currently have the disease.

Apply this code when documentation explicitly states a family history of leukemia, regardless of the specific type of leukemia. This is often used for screening, risk assessment, or when evaluating symptoms that could be related to a higher risk of malignancy. It helps justify further investigation or closer monitoring for the patient.

• Ensure the documentation clearly specifies "family history" of leukemia, not just a personal history.
• Do not use this code if the patient currently has or previously had leukemia; use the appropriate personal history or active leukemia codes instead.
• This code can be used as a secondary diagnosis to support medical necessity for certain screenings or genetic counseling.