| 600 / | HD | SURGERY |
| 300 | DF | DIAGNOSTIC TESTING {38} |
| 481 | DF | .~ Cardiovascular {6} |
| 508 | | .~.~ Heart {4} |
| 509 | DF | .~.~.~> Detecting heartbeat electric signal {10} |
| 526 | DF | .~.~.~> Blood output per beat or time interval |
| 527 | DF | .~.~.~> Detecting heartbeat by sensing movement of oscillatable body-supporting means |
| 528 | DF | .~.~.~> Detecting heart sound |