CPT® Code 75840

The CPT® Code 75840 refers to a specialized radiological procedure known as unilateral selective adrenal venography. This procedure involves the use of radiopaque contrast medium and fluoroscopy to visualize the adrenal veins, which are critical for evaluating various adrenal gland conditions. The primary purpose of this venography is to diagnose potential abnormalities such as blood clots or tumors in the adrenal veins and to assess hormone levels, particularly aldosterone, which can indicate endocrine disorders. During the procedure, access is typically gained through the femoral vein in the groin using a large bore needle. A guidewire is then carefully threaded through the needle and advanced into the vena cava, allowing for precise positioning to visualize the adrenal veins. Following this, a catheter is inserted over the guidewire to the targeted location, and the guidewire is subsequently removed. Blood samples may be collected for aldosterone testing if there are indications of abnormal hormone levels. The contrast medium is injected through the catheter, and x-ray images of the adrenal veins are captured to facilitate the evaluation. At the end of the procedure, the catheter is removed. This code encompasses the radiological supervision and interpretation of the images obtained during the unilateral selective adrenal venography, along with the generation of a written report detailing the findings from the study.