| 600 / | HD | SURGERY |
| 300 | DF | DIAGNOSTIC TESTING {38} |
| 407 | DF | .~ Detecting nuclear, electromagnetic, or ultrasonic radiation {11} |
| 437 | DF | .~.~ Ultrasonic {10} |
| 449 | ![]() | .~.~.~ One-dimensional anatomic display or measurement {3} |
| 450 | DF | .~.~.~.~> Cardiographic |
| 451 | DF | .~.~.~.~> Echoencephalography |
| 452 | DF | .~.~.~.~> Ophthalmic |