| 55.01 | Nephrotomy |
| 55.02 | Nephrostomy |
| 55.03 | Percutaneous nephrostomy without fragmentation |
| 55.04 | Percutaneous nephrostomy with fragmentation |
| 55.11 | Pyelotomy |
| 55.12 | Pyelostomy |
| 55.21 | Nephroscopy |
| 55.22 | Pyeloscopy |
| 55.23 | Closed [percutaneous] [needle] biopsy of kidney |
| 55.24 | Open biopsy of kidney |
| 55.29 | Other diagnostic procedures on kidney |
| 55.31 | Marsupialization of kidney lesion |
| 55.32 | Open ablation of renal lesion or tissue |
| 55.33 | Percutaneous ablation of renal lesion or tissue |
| 55.34 | Laparoscopic ablation of renal lesion or tissue |
| 55.35 | Other and unspecified ablation of renal lesion or tissue |
| 55.39 | Other local destruction or excision of renal lesion or tissue |
| 55.4 | Partial nephrectomy |
| 55.51 | Nephroureterectomy |
| 55.52 | Nephrectomy of remaining kidney |
| 55.53 | Removal of transplanted or rejected kidney |
| 55.54 | Bilateral nephrectomy |
| 55.61 | Renal autotransplantation |
| 55.69 | Other kidney transplantation |
| 55.7 | Nephropexy |
| 55.81 | Suture of laceration of kidney |
| 55.82 | Closure of nephrostomy and pyelostomy |
| 55.83 | Closure of other fistula of kidney |
| 55.84 | Reduction of torsion of renal pedicle |
| 55.85 | Symphysiotomy for horseshoe kidney |
| 55.86 | Anastomosis of kidney |
| 55.87 | Correction of ureteropelvic junction |
| 55.89 | Other repair of kidney |
| 55.91 | Decapsulation of kidney |
| 55.92 | Percutaneous aspiration of kidney (pelvis) |
| 55.93 | Replacement of nephrostomy tube |
| 55.94 | Replacement of pyelostomy tube |
| 55.95 | Local perfusion of kidney |
| 55.96 | Other injection of therapeutic substance into kidney |
| 55.97 | Implantation or replacement of mechanical kidney |
| 55.98 | Removal of mechanical kidney |
| 55.99 | Other operations on kidney |
