CPT® Code 86940

The CPT® Code 86940 refers to the laboratory procedure for screening a unit of blood for the presence of hemolysins and cold agglutinins. Hemolysins are antibodies that can cause the destruction of red blood cells, leading to hemolytic reactions, which can be dangerous during blood transfusions. Cold agglutinins, on the other hand, are antibodies that can agglutinate red blood cells at lower temperatures, potentially complicating the identification of blood group antigens. This screening is crucial to ensure the safety and compatibility of blood transfusions, as the presence of these substances can lead to adverse reactions in patients receiving blood products. It is important to note that if the blood sample undergoes incubation during the testing process, the appropriate code to use would be CPT® Code 86941. This distinction is vital for accurate medical coding and billing, as it reflects the specific procedures performed during the blood screening process.