| 600 / | HD | SURGERY |
| 300 | DF | DIAGNOSTIC TESTING {38} |
| 407 | DF | .~ Detecting nuclear, electromagnetic, or ultrasonic radiation {11} |
| 437 | DF | .~.~ Ultrasonic {10} |
| 459 | ![]() | .~.~.~ Structure of transducer or probe assembly {3} |
| 462 | DF | .~.~.~.~> Probe placed in vascular system or body orifice {4} |
| 472 | DF | .~.~.~.~> With beam directing or shaping means in the wave path (e.g., lens, reflector) |
| 461 | DF | .~.~.~.~> Associated with puncturing instrument |