VSAC SVS API
The Value Set Authority Center (VSAC) Sharing Value Set (SVS) Application Programming Interface (API) allows the user to retrieve a single value set's expansion, with or without its metadata and definition version, using RetrieveMultipleValueSets and RetrieveValueSet, respectively. It is based on the Integrating the Healthcare Enterprise (IHE) SVS Technical Framework, section 2.2.21 SVS integration Profile and the IHE SVS XML Schema. Access requires a free Unified Medical Language System (UMLS) license.