WHAT IS CPT CODE 85520?

CPT code 85520 refers to the laboratory test for the determination of the presence of antibodies to platelet factor 4 (PF4) in the blood, specifically related to heparin-induced thrombocytopenia (HIT). This test is commonly used to diagnose HIT, a serious condition that can occur in patients receiving heparin therapy. It is important for guiding appropriate treatment decisions in affected individuals.