| Modifier | Description |
|---|---|
| LC | Left circumflex coronary artery |
| LD | Left anterior descending coronary artery |
| LM | Left main coronary artery |
| RC | Right coronary artery |
| RI | Ramus intermedius |
| E1 | Upper left, eyelid |
| E2 | Lower left, eyelid |
| E3 | Upper right, eyelid |
| E4 | Lower right, eyelid |
| FA | Left hand, thumb |
| F1 | Left hand, second digit |
| F2 | Left hand, third digit |
| F3 | Left hand, fourth digit |
| F4 | Left hand, fifth digit |
| F5 | Right hand, thumb |
| F6 | Right hand, second digit |
| F7 | Right hand, third digit |
| F8 | Right hand, fourth digit |
| F9 | Right hand, fifth digit |
| LT | Left side (used to identify procedures performed on the left side of the body) |
| RT | Right side (used to identify procedures performed on the right side of the body) |
| TA | Left foot, great toe |
| T1 | Left foot, second digit |
| T2 | Left foot, third digit |
| T3 | Left foot, fourth digit |
| T4 | Left foot, fifth digit |
| T5 | Right foot, great toe |
| T6 | Right foot, second digit |
| T7 | Right foot, third digit |
| T8 | Right foot, fourth digit |
| T9 | Right foot, fifth digit |