All

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 E01 Diagnosis D003933 +
  E01.370 Diagnostic Techniques and Procedures D019937 +
   E01.370.390 Diagnostic Techniques, Urological D003950 +
    E01.370.390.550 Nephrostomy, Percutaneous D009403 
 E04 Surgical Procedures, Operative D013514 +
  E04.579 Ostomy D010030 +
   E04.579.642 Nephrostomy, Percutaneous D009403 
 E04 Surgical Procedures, Operative D013514 +
  E04.950 Urogenital Surgical Procedures D013519 +
   E04.950.774 Urologic Surgical Procedures D013520 +
    E04.950.774.852 Urinary Diversion D014547 +
     E04.950.774.852.642 Nephrostomy, Percutaneous D009403