CPT® Code 84702

The CPT® Code 84702 refers to the quantitative measurement of chorionic gonadotropin (hCG) in a specimen, typically blood. This procedure involves obtaining a blood sample through a process known as venipuncture, which is separately reportable. The quantitative analysis specifically measures the concentration of hCG present in the blood, providing critical information for various clinical scenarios. The presence and levels of hCG are significant in diagnosing conditions such as ectopic pregnancy, where the embryo implants outside the uterus, and in monitoring pregnancies that may be at risk for complications like threatened or missed abortion. Additionally, this test is utilized following a spontaneous abortion to assess hCG levels. Beyond pregnancy-related conditions, the quantitative hCG test is also instrumental in diagnosing trophoblastic diseases, such as hydatidiform mole, and in evaluating germ cell tumors of the testes or ovaries. Furthermore, it plays a role in monitoring the effectiveness of treatment for these conditions and in identifying any potential recurrence. In contrast, the CPT® Code 84703 pertains to a qualitative test that only determines the presence or absence of hCG, which can be performed on either blood or urine samples and is primarily used to confirm pregnancy.