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idLOINCSNOMED
DateJuly October 31, 2017
InfoRMS

SR-38Scope

AccessTerminology Gateway
Code SystemLOINCSNOMED CT
Code System Version2.61July 31, 2017
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 June 2017 update (2.61) from the Regenstrief Institute Inc. and any interim changes from the previously published release, which are described below.

1. There are a total of 38,135 records this release, up from 38,127 in the previously released version. This version incorporates all of the applicable LOINC changes in version 2.61 as published by Regenstrief in June 2017.

2. 37,228 records have been translated to French, up from 37,167 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. 471 records were modified in English for this release and are marked as R05.06.00_2.61.

a. 15 records are of the change type Major for English changes.

b. 19 records are of the change type Minor for English records.

c. 141 records are of the change type Name for English changes.

d. 0 corrections were made to Viewer Names.

e. 288 records have been changed to Inactive and are marked as Deprecated.

4. 8 new records were added for the English version, of which 1 was a replacement for XCA or local code requests that have never been previously published. The jurisdictional codes are provided as the cross reference for these codes.

5. 532 records were modified in French for this release and are marked as R05.06.00_2.61

a. 14 records are of the change type Major for the French translation.

b. 19 records are of the change type Minor for the French translation.

c. 149 records are of the change type Name for the French translation.

d. 1 corrections were made to Viewer Names.

e. 288 records have been changed to Inactive and are marked as Deprecated.

6. 61 new records were added for the French version, of which 1 was a replacement for XCA or local code requests that have never been previously published in French. The jurisdictional codes are provided as the cross reference for these codes.

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

Canadian Edition package includes one (1) set of files for referencing the English and French CA content and the July 2017 version of SNOMED CT International. This publication format is provided to Canadian stakeholders to facilitate implementation if there is no need to use the Canadian Extension* files separately. The content of this package has been pre-computed and harmonized based on the module dependency when several extensions are merged. 

The package is a zip file that includes text files in the RF2 format as per the SNOMED International specifications. The files provide the three (3) types of releases: full, delta and snapshot. Each type of release file includes refset files and terminology core files.

 

*  The Extension package will be available only upon request. It consists of three (3) different modules and files that can be implemented individually: there is a module for the English CA content, one for the French CA content and one for the References sets that are in scope for the release.

 

Release Scope

  1. Request for change received from Canadian implementers from March to September 2017  - InfoRMS SNOMED CT RFC Project
    1. Requests to add, change or inactivate  content in both English and French 
    2. Corrections to content (typographical errors, metadata, others)  
    3. EN CA concepts promoted to international version of SNOMED CT : 
      1. There is about 350 concepts from Canada, that were accepted in the July 2017 version of SNOMED CT International. Most of them kept the CA conceptID, some did not because they had been already added from other stakeholders. 

  2. Subsets - InfoRMS Subset RFC Project
    1. Subsets updated: Immunization subsets, Primary Health Care subsets and the Communicable Disease subset. 
    2. New subset created:  EncounterDischargeDisposition 
    3. Subset inactivated: Prescription-AuthorizationType

  3. Issues resolved
    1. Capitalization of the vaccines trade names concepts
    2. Preferred synonyms that where not appropriately representing the semantic of the concept, were inactivated. 
    3. Case significance changes in the International version that impacted the CA Edition content

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

  • There are 288 deprecated codes, we provided the "Map To" information but did not add the suggested codes to pCLOCD. We encourage implementers to request the addition of any of these codes if required.
  • The majority of the deprecations were related to the Streptococcus pneumoniae antibody codes, these codes were ambiguous as to serotype designations, Regenstrief updated the unambiguous terms to reflect the Danish serotypes.
  • There were 12 California encephalitis virus terms that were undeprecated based on reviewing the latest literature and confirming that California encephalitis virus is a distinct member of the CAL serogroup in addition to LaCrosse virus (LACV), Jamestown Canyon virus (JCV), Snowshoe Hare virus, and Trivitattus virus.
    • 19 codes for Chlamydia trachomatis antigen or Neisseria gonorrhoeae were set to Discouraged by Regenstrief (still active in pCLOCD) because antigen testing for C. trachomatis and N. gonorrhoeae is no longer recommended; nucleic acid amplification testing is preferred.