Rh incompatibility w delayed hemolytic transfs react, init

This code signifies a delayed adverse reaction to a blood transfusion, specifically caused by an incompatibility in the Rh blood group system. The patient's immune system, previously sensitized to Rh antigens, reacts to transfused Rh-positive blood, leading to hemolysis that typically manifests days to weeks after the transfusion.

Apply this code when documenting a patient presenting with symptoms of a delayed hemolytic transfusion reaction, such as anemia, jaundice, or fever, and laboratory findings confirm Rh incompatibility as the cause. This code is appropriate for the initial diagnostic workup and management of the reaction.

• Ensure documentation clearly links the delayed hemolytic reaction to Rh incompatibility.
• Verify this is the initial encounter for the specific reaction; subsequent encounters would use a different seventh character.
• Code any associated signs or symptoms, such as anemia, as secondary diagnoses.