Actually it not just a local terminology expression library we need. I think we also need context / artefact specific synonyms for search.
The RCPA have done a lot of work trying to subset evaluation procedures/lab procedures in SNOMED CT in the context of Lab ordering (e.g. GP/FP/Specialist to Lab, Aged Care facility to Lab). If we arranged for the Australian NRC to add all of these synonyms it would certainly pollute the reference terminology. An example might be ‘AA’ for Amino Acids. I’m sure all of you could come up with a number of concepts that would abbreviate to ‘AA’ e.g. Aortic Aneurysm. But in context, AA is quite a useful shortcut to find Amino Acids in a short (<400) list of Lab orders concepts.