CPT® Code 77022

This CPT® code 77022 pertains to the use of magnetic resonance imaging (MRI) guidance specifically for the monitoring of parenchymal tissue ablation procedures. Parenchymal tissue refers to the functional cells within an organ, such as those found in the liver, kidneys, or various glands, distinguishing them from the structural stroma cells, which include blood vessels and connective tissues. The process of ablation involves the targeted application of destructive energy to induce cell death, leading to localized necrosis and the formation of scar tissue, which ultimately results in the shrinkage of the affected area. MRI is employed to accurately localize the target area for ablation, ensuring precision in the procedure. During the ablation process, the appropriate device—such as a needle, catheter, or other energy application tools—is inserted under the guidance of MRI. This technique is particularly beneficial for procedures aimed at destroying tumors or masses within the parenchymal tissue. MRI is a noninvasive imaging modality that does not involve radiation exposure. It leverages the magnetic properties of hydrogen atoms present in the body; when subjected to radio waves within a strong magnetic field, these hydrogen nuclei emit radiofrequency signals. A computer processes these signals to generate high-resolution tomographic and three-dimensional images, allowing for detailed visualization of the target area. The devices utilized in conjunction with MRI guidance may feature specialized metallic ringlets, be coated with contrast materials, or incorporate signal-receiving coils at their tips to enhance imaging quality and procedural accuracy.