CPT® Code 88720

A total transcutaneous bilirubin (TcB) test is a noninvasive procedure used to measure the total bilirubin levels in a patient's body. This test serves as an alternative to more invasive methods, such as the traditional heel stick used for obtaining total serum bilirubin. The TcB test utilizes a specialized bilirubin analyzer device that assesses bilirubin levels through the skin, making it a simpler and less painful option for patients, particularly infants. The procedure begins with the initialization of the bilirubin analyzer, which includes a self-test to confirm the device's proper functioning. Once calibrated, the device is applied to the patient's forehead or sternum, where it emits light that penetrates the skin. The analyzer evaluates the reflected light, taking into account the known characteristics of skin components like collagen, melanin, hemoglobin, and bilirubin itself. By employing the principle of spectral subtraction, the device can accurately determine the total bilirubin concentration. After the initial measurement, a series of five measurements are typically conducted to ensure accuracy, culminating in the display of the total bilirubin level on the device. This method is particularly beneficial in clinical settings where quick and reliable bilirubin assessments are necessary without the discomfort associated with blood draws.