| Revision 5 (2021) |
| Revision 5 | Amendment 1 (2022) |
| Revision 5 | Amendment 2 (2023) |
| Revision 5 | Amendment 3 (2025) |
| UN R22: Revision 4 (2002) |
| UN R22: Revision 4-Amendment 1 (2012) |
| Revision 4 | Amendment 2 (2019) |
| Revision 4 | Amendment 3 (2021) |
| Earlier texts may be available through the UN Official Document System. |