The LOINC prerelease page states: " It is possible that they may not be published in the next, or any, public release."
What happens to LOINC codes that never make it to any release? They won’t have a status. Can they be reused in LOINC, or are they guaranteed never to be used for other concepts?
We (in the Netherlands) will need to support some prerelease concepts, and I need to know whether the LOINC code will be a reliable identifier. Of course, in cases where they don’t make it to any LOINC release, we’ll have to abandon those, but that might take some time.