CPT® Code 76945

Ultrasonic guidance for chorionic villus sampling (CVS) involves the use of ultrasound technology to assist in the safe and accurate collection of chorionic villi, which are small, finger-like projections found in the placenta. These villi share the same genetic material as the fetus, making them crucial for genetic testing. The primary purpose of CVS is to detect potential fetal genetic disorders, including conditions such as Tay-Sachs disease, hemophilia, and Down syndrome. Before the CVS procedure is initiated, an ultrasound examination of the pregnant uterus is conducted to assess the fetus's position and to locate the placenta accurately. This preliminary imaging is essential for determining the safest approach for the sampling procedure. CVS can be performed using two methods: transvaginally, where a catheter is inserted through the cervix to reach the placenta, or through the abdominal wall, where a needle is guided into the placenta. Throughout the procedure, continuous ultrasound imaging is employed to ensure the correct placement of the catheter or needle, facilitating the aspiration of the chorionic villus sample. Following the procedure, the physician is responsible for providing a comprehensive written report detailing the imaging aspects of the CVS, which is critical for documentation and further medical evaluation.