Codelists are developed by a broad community of users for individual study purposes, which may or may not meet the needs of other studies. They should not be thought of as universal definitions of a particular condition.

We don't offer any guarantees about what they do or don't identify. Users should carefully check that any codelist meets their needs, and seek clinical input where appropriate.

* dm+d codelists can be downloaded with codes mapped to changed VMPs included - this is the default for an OpenSAFELY project. See the documentation on keeping codelists up to date for more details.