| Grade | Appearance | |
| 0 | Normal healing | |
| 1 | Normal healing with mild bruising or erythema | |
| 1A | Some bruising | |
| 1B | Considerable bruising | |
| 1C | Mild erythema | |
| 2 | Erythema plus other signs of inflammation | |
| 2A | At 1 point | |
| 2B | Around sutures | |
| 2C | Along wound | |
| 2D | Around wound | |
| 3 | Clear or hemoserous discharge | |
| At 1 point (<2 cm) |
| |
| Along wound (>2 cm) |
| |
| Large volume |
| |
| Prolonged (>3 days) |
| |
| 4 | Pus | |
| A | At 1 point only (<2 cm) | |
| B | Along wound (>2 cm) | |
| 5 |
| Deep or severe wound infection with or without tissue breakdown; hematoma requiring aspiration. |