Delta-beta thalassemia

This code represents a severe form of beta-thalassemia characterized by a significant reduction or absence of both delta and beta globin chain synthesis, leading to chronic hemolytic anemia. Patients typically present with symptoms similar to thalassemia major, requiring regular blood transfusions.

Use this code for patients diagnosed with a symptomatic, clinically significant delta-beta thalassemia requiring ongoing medical management. Documentation should clearly indicate a diagnosis of delta-beta thalassemia, often supported by genetic testing and hemoglobin electrophoresis results showing elevated HbF and absent or very low HbA and HbA2.

• Distinguish from delta-beta thalassemia minor or trait (D56.3), which are typically asymptomatic or have mild anemia.
• Ensure documentation specifies "delta-beta thalassemia" and not just "thalassemia" to avoid miscoding.
• Code any associated complications, such as iron overload or splenomegaly, as secondary diagnoses.