ABO incompatibility w acute hemolytic transfs react, subs

This code signifies a delayed or follow-up encounter for a patient who previously experienced an acute hemolytic transfusion reaction due to ABO incompatibility. This reaction involves the rapid destruction of red blood cells caused by an immune response to incompatible ABO blood types during a transfusion.

Use this code for subsequent visits related to the management, monitoring, or sequelae of an acute hemolytic transfusion reaction caused by ABO incompatibility. This includes follow-up appointments for kidney function checks, anemia management, or addressing any long-term complications stemming from the initial reaction.

• Always assign an additional code for the specific type of transfusion (e.g., Z51.89 for other specified aftercare).
• Ensure documentation clearly indicates a prior acute hemolytic transfusion reaction due to ABO incompatibility and that the current encounter is for follow-up care.
• Do not use this code for the initial encounter of the reaction; a different code would be appropriate for the initial presentation.