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| BT40ZZZ | Ultrasonography of Bladder |
| BT41ZZZ | Ultrasonography of Right Kidney |
| BT42ZZZ | Ultrasonography of Left Kidney |
| BT43ZZZ | Ultrasonography of Bilateral Kidneys |
| BT45ZZZ | Ultrasonography of Urethra |
| BT46ZZZ | Ultrasonography of Right Ureter |
| BT47ZZZ | Ultrasonography of Left Ureter |
| BT48ZZZ | Ultrasonography of Bilateral Ureters |
| BT49ZZZ | Ultrasonography of Kidney Transplant |
| BT4JZZZ | Ultrasonography of Kidneys and Bladder |