The reference set example tables on this page have been revised as follows to aid clarity and understanding:

• The first four columns which are present in all release files are not shown. The omitted columns (id, effectiveTime, active, moduleId) are used in the same way in all referenced sets to support identification, versioning and packaging. They do not directly affect the specific features of a particular reference set or reference set type.
• Reference set columns that contains SNOMED CT identifiers are expanded to show details of the concept or description referenced by that identifier. In the reference set only the identifier is present as details of the component are, where necessary, looked up from the relevant release file.