| 600 / | HD | SURGERY |
| 300 | DF | DIAGNOSTIC TESTING {38} |
| 372 | DF | .~ Structure of body-contacting electrode or electrode inserted in body {6} |
| 373 | ![]() | .~.~ Electrode placed in body {7} |
| 374 | DF | .~.~.~> Electrode placed in or on heart {1} |
| 376 | DF | .~.~.~> Fetal monitoring |
| 377 | DF | .~.~.~> Electrode implanted in body |
| 378 | DF | .~.~.~> Electrode in brain |
| 379 | DF | .~.~.~> Electrode in ear |
| 380 | DF | .~.~.~> Electrode in esophagus or pharynx |
| 381 | DF | .~.~.~> Electrode in artery or blood vessel |