In simple words: This test uses a CT scanner to take detailed pictures of your lower back.The test is done twice: once without and once with a special dye (contrast) injected into a vein to improve the images. A doctor will then review the pictures to check for problems.

This diagnostic procedure involves a computed tomography (CT) examination of the lumbar spine.The examination is performed in two phases: first without intravenous contrast material, followed by a second set of images after intravenous administration of contrast material. The images are then interpreted by a radiologist.

Example 1: A patient presents with lower back pain and neurological symptoms. A CT scan of the lumbar spine with and without contrast is ordered to evaluate for possible disc herniation, spinal stenosis, or other pathology. , A patient with a history of trauma to the lower back requires imaging to assess the extent of injury.A CT scan of the lumbar spine with and without contrast is performed to visualize bone fractures, ligamentous tears, or soft tissue injuries. , A patient with suspected malignancy in the lumbar spine undergoes a CT scan with and without contrast to evaluate the extent of the tumor, its relationship to surrounding structures, and to guide biopsy planning.

The documentation must include the reason for the exam, the patient's medical history, and detailed findings from the radiologist's interpretation of the CT images.If contrast is used, the type, amount and route of administration should be documented.

** The use of 72133 implies that both a non-contrast and a contrast-enhanced CT scan were performed. If only one or the other was performed, then codes 72131 or 72132 should be used, respectively.Individual payer policies should always be consulted regarding contrast material coverage and reimbursement.