Important note regarding ValueSet expansions:

Within this release of the UK Core, ValueSet expansions have been incorporated into the ValueSets. For some ValueSets containing SNOMED CT or dm+d data in particular, the number of concepts were deemed too large to expand. It should also be remembered that the expansions of SNOMED CT data in particular represent the content available at the time the expansion was generated, but that this content can subsequently change. For an up to date and complete list of values, suppliers SHOULD consult the latest SNOMED CT terminology release.