| Feature | Points | Criteria |
| A. Steatosis | 0 | <5% |
| 1 | 5 to 33% | |
| 2 | >33 to 66% | |
| 3 | >66% | |
| B. Lobular inflammation | 0 | None |
| 1 | <2 foci per 200X field | |
| 2 | 2 to 4 foci per 200X field | |
| 3 | >4 foci per 200X field | |
| C. Ballooning | 0 | None |
| 1 | Few ballooning cells | |
| 2 | Many cells/prominent ballooning |
