| Grade of Diabetic Foot Ulcer | Complication of Diabetic Foot Ulcer |
| 0 | Foot at increased hazard and no ulcer |
| 1 | Ulcer (superficial) |
| 2 | Cellulitis with deep ulcers |
| 3 | Osteomyelitis ulcer |
| 4 | Gangrene (patchy) |
| 5 | Foot completely gangrenous |