CPT® Code 50200

A renal biopsy, as described by CPT® Code 50200, involves a percutaneous procedure where a trocar or needle is utilized to obtain a tissue sample from the kidney. This procedure is typically performed under sedation, with the administration of a local anesthetic to minimize discomfort for the patient. The patient is positioned prone, often on pillows or folded sheets, which helps to compress the abdomen and upper ribs, thereby facilitating better access to the kidney. Visualization of the kidneys is achieved through various imaging modalities, including ultrasound, fluoroscopy, CT, or MRI, with ultrasound being the most frequently used method. The trocar or needle is carefully inserted through the skin and advanced towards the renal capsule under direct visualization, allowing for the precise collection of a tissue sample. This sample is then sent for pathological evaluation to assess any potential abnormalities. It is important to note that this procedure is distinct from an open biopsy, which is described under CPT® Code 50205, where a surgical incision is made to expose the kidney directly.