LOINC defines a way to asks clinical questions which coded answers may be represented by SNOMED-CT. LOINC has the worldwide integration and SNOMED-CT has the detailed semantics, and is the leading global clinical terminology. So the both are well matched partners, and as a consequence the owners of both coding systems, IHTSDO and the Regenstrief Institute agreed to a plan to integrate both coding systems to one coding system. This plan defines a cooperative work, which started in 2014, and according to this plan, all LOINC-concepts will have SNOMED-CT concepts somewhere in 2018.
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