Sickle-cell thalassemia beta zero without crisis

This code identifies a specific type of hemoglobinopathy where an individual inherits one gene for sickle cell anemia and one gene for beta-thalassemia major (beta zero). This combination results in a severe form of sickle cell disease, characterized by chronic hemolytic anemia and other complications, but without an acute vaso-occlusive crisis at the time of encounter.

Apply this code for patients diagnosed with sickle-cell beta zero thalassemia who are not currently experiencing a sickle cell crisis. Documentation should clearly state the diagnosis of sickle-cell beta zero thalassemia and explicitly exclude the presence of an acute crisis. This code is appropriate for routine follow-up, management of chronic complications, or when the patient is in a steady state.

• Distinguish from other sickle-cell thalassemia types (e.g., beta plus) and from sickle cell anemia without thalassemia.
• Do not use if the patient is experiencing an acute sickle cell crisis; a different code specifying crisis would be required.
• Ensure the medical record explicitly states "beta zero" to support the specificity of this code.