FHIR® API for the Value Set Authority Center (VSAC)


In 2017 IRIS delivered a RESTful API for the National Library of Medicine (NLM) that provides users access to the current value sets and supported code systems (LOINC, SNOMED-CT, RX Norm, etc) in the Value Set Authority Center (VSAC). This project supported the initial FY17 VSAC expansion of the value set operations described in the FHIR® documentation through expansion, validation, and lookup capabilities of code sets.

FHA supports the expansion of VSAC’s capacity to accommodate the value sets in consolidated clinical document architecture (C-CDA) and fast healthcare interoperability resources (FHIR®) allowing Federal agencies using these standards to interoperate with greater precision and consistency.  


Program Management,  Project Management


In this role:
  • Provided Program Management Support for this project
  • Wrote code to support the value set operations as defined by FHIR and Provided FHIR® operational support on C-CDA value set content that is in VSAC
  • Added to and adjusted the VSAC API to accommodate the FHIR® data model and attributes where needed
  • Developed enhancements as needed to existing NLM Terminology services to accommodate FHIR needs
  • Participated in meetings and connect-a-thons to engage with the community and provide input on the further development of the specification
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