Announcing the release of LOINC Ontology version 2.83

Regenstrief Institute and SNOMED International announced the release of LOINC Ontology Version 2.83. This ongoing joint initiative aims to deliver seamless interoperability between LOINC and SNOMED CT by linking LOINC concepts with SNOMED CT’s clinical ontology. More info at: loinc.org/ontology (downloads, documentation, and the LOINC Ontology browser).

LOINC Ontology v2.83 is aligned with the July 1, 2026 International Release of SNOMED CT and LOINC Version 2.83, released August 2026. This release continues to advance laboratory observable modeling to enhance data quality, clinical accuracy, and cross-system exchange. Major updates in version 2.83 include expansions in genetic microbiology post-coordination concepts, restructuring of drug and toxicology analytical methods, standardization of gene mutation representations, and property alignments across microbiology classes. Details on these updates are available in the technical release notes.

Last Updated on 3 November 2026