CPT® Code 72156

Magnetic resonance (eg, proton) imaging, spinal canal and contents, without contrast material, followed by contrast material(s) and further sequences; cervical

Magnetic resonance imaging (MRI) is a sophisticated imaging technique utilized to visualize the spinal canal and its contents, specifically in the cervical region. This noninvasive procedure employs the magnetic properties of hydrogen nuclei found in the body, allowing for detailed imaging without the use of ionizing radiation. During the MRI process, a powerful magnetic field is generated, which aligns the hydrogen atoms in the body. Subsequently, radiowaves are transmitted through this magnetic field, causing the protons in various tissues to emit specific radiofrequency signals. These signals are captured by a computer, which processes the data to produce high-resolution tomographic images in three-dimensional slices. The MRI of the cervical spine is particularly indicated when conservative treatments for neck or back pain have failed, or when there is a need to assess the condition following surgical interventions. The procedure involves taking initial images without the use of contrast material, followed by the administration of contrast agents to enhance the visibility of the spinal structures. This dual-phase imaging allows physicians to evaluate critical aspects such as spinal alignment, the presence of diseases or injuries affecting the vertebrae, intervertebral disc conditions, and the overall size of the spinal canal. Additionally, it aids in identifying any nerve compression or inflammation, as well as monitoring changes post-surgery. For coding purposes, the specific CPT® code for this MRI procedure is 72156, which pertains to the cervical spine, while codes 72157 and 72158 are designated for thoracic and lumbar spine MRIs, respectively.