Native Kidney Biopsy

Native kidney biopsy. PROCEDURE: After obtaining consent, the patient was taken to ultrasound room. She was put in the prone position. Both kidneys were difficult to visualize. The right kidney was chosen. Skin was prepped in the usual fashion. Lidocaine was used for local anesthesia. Using real-time ultrasound guidance, the right kidney was accessed multiple times. At least six core biopsies were obtained and were sent for light and electron microscopy in addition to immune fluorescence. Post biopsy ultrasound showed no evidence of hematoma. What are the CPT® codes?