Terminology Status APIs - Mapping Obsolete Codes to Current RxNorm, SNOMED CT, and LOINC Concepts

Stud Health Technol Inform. 2017;245:1333.


We created the Terminology Status Application Programming Interface (API) to assist users in mapping obsolete codes to current RxNorm, SNOMED CT and LOINC concepts. Use cases include support for information retrieval, maintenance of value sets, and analytics of legacy clinical databases. Our terminology status APIs typically receive over 4 million calls per month on average.

Keywords: Logical Observation Identifiers Names and Codes; RxNorm; Systemized Nomenclature of Medicine.

MeSH terms

  • Animals
  • Humans
  • Information Storage and Retrieval
  • Logical Observation Identifiers Names and Codes*
  • RxNorm
  • Software
  • Systematized Nomenclature of Medicine*
  • Vocabulary, Controlled