CPT® Code 76831

Saline infusion sonohysterography (SIS) is a specialized ultrasound procedure used to evaluate the uterine cavity. This technique involves the infusion of sterile saline into the uterus to enhance the visibility of the uterine lining during transvaginal ultrasound imaging. The procedure begins with the insertion of a vaginal ultrasound probe, which allows for a baseline assessment of the uterus. Following this initial imaging, a catheter is carefully inserted through the cervix into the uterine cavity, a step that is considered a separately reportable procedure. Once the catheter is in place, sterile saline is infused into the uterus while the ultrasound probe is reinserted. This infusion helps to distend the uterine cavity, allowing for a more detailed examination of the uterine surface and the identification of any abnormalities, such as polyps, fibroids, or other structural issues. After the procedure is completed, the catheter is removed, and the physician documents the findings in a written report, which is essential for further evaluation and management of the patient's condition.