DateSeptember 30, 2021


AccessTerminology Gateway
Code SystemLOINC
Code System Version2.71
Release TypeMaintenance

The pan-Canadian LOINC Observation Code Database (pCLOCD) standard is published as an Excel file that contains ten tabs. The four tabs that were edited in this release include Infoway Terms of Use, LOINC® Copyright, Nomenclature and the Change Log. This release contains the August 2021 update (2.71) from the Regenstrief Institute Inc. and any interim changes from the previously published release, which are described below.

It is helpful to review the general pCLOCD release information in tandem with each pCLOCD release notes.

**This is the first pCLOCD release within the new pCLOCD bi-annual release schedule. **


1. There are a total of 38,573 records this release, up from 38,518 in the previously released version. This version incorporates all of the applicable LOINC changes in version 2.71 as published by Regenstrief in August 2021.

2. 37,680 records have been translated to French, up from 37,623 in the last version. Terms that are marked ‘Review Draft’ should be reviewed before they are used as the translation has not been previously published. Terms that are marked as ‘Complete’ have been previously published. 

3. 67 records were modified in English for this release and are marked as R05.15.00_2.71

a. 5 records are of the change type Name for English changes.

b. 4 corrections were made to Viewer Names.

4. 54 new records were added for the English version.

5. 67 records were modified in French for this release and are marked as R05.15.00_2.71

a. 1 record is of the change type Major for the French translation.

b. 5 records are of the change type Name for the French translation.

c. 5 corrections were made to Viewer Names

6. 56 new records were added for the French version.

7. Both languages contain a number of codes that only have changes in the other language; those are identified as ‘No Change’.

Of specific interest in this release , current implementers may want to review these changes:

  • LOINC terms related to SARS-CoV-2/COVID-19 testing continues to be the primary focus during release cycles. Working closely with Canadian implementers and Regenstrief team we have ensured timely processing of LOINC content requests for SARS-CoV-2 laboratory tests.

New Content highlights:

New LOINC codes are added in pCLOCD solely on stakeholder requests. Infoway only adds the LOINC content identified by jurisdictions as being used/required, in this way we support pCLOCD being representative of usage and requirements in Canada. However, a list of all newly published LOINC 2.71 codes is available for download. If your jurisdiction requires existing LOINC codes added to pCLOCD, please submit your request via InfoRMS.  

New LOINC codes added to pCLOCD in this release includes:

  • 18 new microbiology terms
  • 16 new terms in allergy class
  •  7 new terms in chem class 
  • Other new terms in coagulation, challenge, hematology,  and drug/toxicology

Term edits highlights:

  • 5 LOINC terms that included "Phenotyping" in the Component name were changed to "Phenotype" for naming consistency across LOINC
  • Corrected several minor typos in Viewer names

Questions and feedback welcome, email us: [email protected]