| Code | Main Discipline |
| 0 | Not Applicable |
| 50200 | Archival Science |
| 50400 | Classics, Classical & Dead Languages |
| 50600 | Communications and Media Studies |
| 50800 | Fine Arts |
| 51000 | History |
| 51200 | Library and Information Science |
| 52000 | Literature, Modern Languages and |
| 53000 | Mediaeval Studies |
| 55000 | Philosophy |
| 56000 | Religious Studies |
| 60200 | Anthropology |
| 60400 | Archaeology |
| 60600 | Criminology |
| 60800 | Demography |
| 61000 | Economics |
| 61200 | Education |
| 61400 | Urban and Regional Studies, Environmental Studies |
| 61600 | Folklore |
| 61800 | Geography |
| 62000 | Industrial Relations |
| 62200 | Law |
| 62400 | Linguistics |
| 62600 | Management, Business, Administrative Studies |
| 62800 | Political Science |
| 63000 | Psychology |
| 63200 | Social Work |
| 63400 | Sociology |
| 70000 | Interdisciplinary Studies |
| 80000 | Natural Sciences and Engineering |
| 83000 | Medical Sciences |
| 99998 | Not Specified |
| 99999 | Other |