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New Releases of pCLOCD and SNOMED CT Available July 31

The July 2019 versions of pan-Canadian LOINC Observation Code Database (pCLOCD) and Systematized NOmenclature of MEDicine Clinical Terms (SNOMED CT®) are available July 31 for review and implementation accessible on Terminology Gateway.

Changes to pCLOCD based on the June 2019 International release of LOINC® includes:

  • 782 total records with content edits in either English or French
    • 148 content edits
      • 30 terms had updates to component parts to align with current nomenclatures
      • 42 terms had updates to Scale from OrdQn to Ord because genotyping does not produce quantitative susceptability results
    • 612 term edits that introduce Tallman lettering for drugs based on recommendations from the Institute for Safe Medication Practices
    • 22 records were deprecated this release

Links to pCLOCD documentation are on the LOINC and pCLOCD Standards page under Implementation Guidelines & Resources.

Please refer to the specific pCLOCD Release Notes. These notes are intended to accompany the release to provide further information on specific additions and changes that have been incorporated into this release.

Content highlights for the July 2019 release of SNOMED CT include:

Total number of new concepts: 4 411

Total number of concepts changes: 44 638 (most changes are related to better definition of concepts)

Main hierarchy changes:

  • Body structure (Anatomy Model)
  • Clinical findings (Quality imporvement Project and Convergent Medical Terminologies (CMT)
  • Procedure (Quality improvement Project)
  • Event (Quality improvement Project)
  • Qualifier value (Quality improvement Project)
  • Organism (Quality improvement Project)
  • Pharmaceutical/biologic product (Drug Model Project)
  • Social context, Situation with explicit context, Observable entity
  • Substance (Drug model Project) 

Other updates:

  • Update to the SNOMED CT to ICD-10 map and to ICD-O map
  • Ongoing maintenance of the Controlled Medical Terminologies (CMT) Subsets and on the Collaboration efforts: Orphanet, Global Medical Device Nomenclature Agency (GMDNA)
  • Continuation of Pharmaceutical / biologic product hierarchy redesign for the Drug model project
  • Logic Profile Enhancements: Related The first release of to the OWL reference sets
  • Machine Readable Concept Model (MRCM) updates
  • SNOMED CT to OWL conversion and classification Toolkit

IMPORTANT CHANGE in the July 2019 International Edition: Replacement of the Stated Relationship files with the new OWL Expression refset files, and Combination of two new refsets - OWLAxiom and OWLOntology

Please refer to SNOMED CT July 2019 International Release Notes that accompany the release for further information on specific additions and changes incorporated into this release.

Requests for change to these terminology standards should be made via Infoway’s request for change management system, InfoRMS, which is accessible once you have logged into your Infoway account.

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