Division (82) Main categories of causal agents/factors
United Kingdom
| Agent group | Code |
|---|---|
| Game and grazing | 100 |
| Insects | 200 |
| Fungi | 300 |
| Abiotic agents | 400 |
| Direct action of men | 500 |
| Fire | 600 |
| Atmospheric pollutants | 700 |
| Other factors | 800 |
| (Investigated but) unidentified | 999 |