Overview of Current Notices
For additional Relevant links with regards to Content Development Information please click here Content Development Information
| Items | Proposed improvement | Planned Release date (*this is provisional only and is subject to change) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | LOINC timeline changes - please refer to Roadmap link here LOINC | July 2018 and potentially other future releases.Browse Content Changes for the January 2020 Release The daily build is available to review changes made to content for the January 2020 release https://dailybuild.ihtsdotools.org/ Forthcoming concept inactivations, new concepts and changes to existing concepts can be reviewed using the tab 'Daily build.' | January 2020 International Release | ||||||||
| 2 | Revision of IS A relationships for anatomy concepts The new anatomy concept model has implemented the new enhanced Description Logic features, e.g. reflective reflexive and transitive propertyproperties, general concept additional axioms, for consistent logical modeling. However, the new model cannot be implemented in production because these DL features currently are not available in production. The implementation of them will depend on the enhanced logic profile for SNOMED CT which is under development by the Modeling AG. Yet, the inferred IS A relationship The inferred IS A relationships from the OWL anatomy ontology can be have been reviewed and the changes have been implemented in the production. This will utilise the outcomes of the new anatomy model as well as evaluate the design of the new model. In particular, it is important to review the changes of IS-A relationships in anatomy for quality assurance and minimise The potential impact to other hierarchies, such as disorders, procedures, observables, situations etc are also reviewed as part of the project. The first subject area for revision is the sub-hierarchy of skin structure. The majority changes have been made in the January 2018 release. The rest will be completed in July 2018 and following releases.of cardiovascular, digestive and genitourinary systems have been included in the July 2019 release. The respiratory, nervous, integumentary, endocrine, immune, sensory organs, lymphoreticular, hematological systems will be revised in the January 2020 International release. Information about revision of IS_A relationships can be viewed here:The subject area for revision of IS A relationships will be determined and updated in the following confluence page. | July 2018 International Edition | |||||||||
| 3 | Summary of Drugs changes Groupers (disposition, structural)
MP-containing
MP-only
MPF-containing
MPF-only
Clinical drug
Role:
New semantic tags, attribute and hierarchies added and MRCM change made to support National Extension Model.
| Jan 2019 International Edition | |||||||||
| 4 | Summary of Substances Changes Flattening of Substance hierarchy Regular maintenance of substance hierarchy - Add missing structural parents and Disposition and Structure groupers Review of the remaining existing JIRA tickets for Substance project Review of the existing JIRA tickets for Allergies project Replace Substance concepts with product concepts, where role concepts have been used to define procedures or findings Gap analysis on selected national extensions Substances to support the product Active ingredients not in SNOMED - RxNORM, AMT | Jan 2019 DEMO Release | |||||||||
| 5 | Internal QA - Situation and Findings Test and procedure status: Inactivated 143 concepts in the Situations and Findings hierarchies with pattern "Test/procedure OFFERED" and "Test/procedure NOT OFFERED" as these represent an administrative status. | Jan 2019 International Edition | |||||||||
| 6 | Internal QA - Qualifier Value Inactivation of Agencies and organizations (qualifier value) and subtypes: moved to UK extension i.e. 66 concepts inactivated. | Jan 2019 International Edition | |||||||||
| 7 | Replacement of OWL conversion script with a link to the open source directory In January 2017 the original OWL conversion script (a.k.a. the "Spackman OWL script") was removed from the International Edition package, and has since been published as a separate artefact alongside each Release. Because this script does not recognize the two new OWL refsets (see section 3.3.2 of these Release Notes), the Terminology Release Advisory Group has determined that the script should no longer be distributed. Going forward, Release Notes will now include a link to the new open source OWL conversion toolkit that can be found in the following repository (including documentation on its use): https://github.com/IHTSDO/snomed-owl-toolkit Please contact SNOMED International at support@snomed.org if you would like to provide any feedback on ways to extend and improve the new toolkit. | July 2018 International Edition | |||||||||
| 8 | Deprecation of the Technical Guide Exemplars document from the International Edition release package The Terminology Release Advisory Group has confirmed that there should be no impact from removing this almost entirely static document from the International Edition release package, and hosting it instead in a Confluence Page. From the July 2018 International release then, we will deprecate this file (doc_Icd10MapTechnicalGuideExemplars_[date].xlsx) from the Release package, and instead provide a link in the Release Notes to the new Confluence Page. Please see section 2.4.1.3 of the Release Notes for the relevant link. | July 2018 International Edition | |||||||||
In the July 2019 release changes were made to 113345001|Abdominopelvic structure (body structure)| whilst retaining the ‘synonyms’ of Abdomen and Abdominal structure based on the most common usage. Further work is currently underway to more explicitly describe and define concepts relating to regional anatomy of the abdomen and pelvis with changes to content due to be implemented after a period of consultation. | January 2020 International Release July 2020 International Release | ||||||||||
| 3 | MRCM Changes Please see: | January 2020 International Release | |||||||||
| 4 | Quality Initiative Information about the project can found here - Quality Initiative - Progress Note: There are changes to the Service Level Agreement for the CRS as a result of the Quality Initiative: | January 2020 International Release | |||||||||
| 5 | Changes to Case Sensitivity Over 31,000 descriptions have been reviewed and approximately 5,402 descriptions across 2806 concepts have had their case significance settings corrected as appropriate. The Editorial Guidance on case significance related to descriptions containing numeric values and special characters has been updated for the January 2020 release. | January 2020 International Release | |||||||||
| 6 | Planned changes to 'Co-occurrent and due to' pattern During the implementation of the new Description Logic features a conflict was uncovered between the modeling of 'Co-occurrent and due to' and General Concept Inclusions (GCIs). This has resulted in the need to reconsider the modeling of "Co-occurrent and due' and update the Editorial Guide for this area. There are a number of new concepts in the January 2019 release that are based upon the existing guidance for 'Co-occurrent and due to'. The plan is to update the Editorial Guide and all concepts that are currently modeled as 'Co-occurrent and due to' starting from the July 2019 release. | January 2020 International Release and future releases | |||||||||
| 7 | WAS_A Inactivation reason of LIMITED/WAS_A is not allowed for any new content inactivations after the July 2018 release. The WAS_A association refset has not been updated thereafter. At the Editorial Advisory Group meeting in April 2019, agreement was reached to discontinue the maintenance of WAS_A relationships when inactivating concepts that have a historical association to an inactive concept. When changes are made to a historical relationship for a concept that was previously inactivated using WAS_A, effort will be made to assign a new historical relationship that facilitates traceability of the concept (e.g. DUPLICATE or AMBIGUOUS) as opposed to NON-CONFORMANCE TO EDITORIAL POLICY. Existing WAS_A relationships will be inactivated in a future release once a plan for batch reassignment of historical relationships has been developed. Until then, SNOMED International will not continue to use or maintain WAS_A relationships. | January 2020 International Release and future releases | |||||||||
| 8 | Known Content Issues July 2019 Release Approximately 149 text definitions are missing either a US or GB spelling variation. These are all legacy issues that will be rectified in the January 2020 release. A small set of disorder concepts have been identified with descendants that have a semantic tag of clinical finding. A further small set of concepts have been identified that have a semantic tag of disorder but are not descendants of 64572001|Disease (disorder)|. These concepts are all legacy issues that will be rectified in the January 2020 release. Release validation rules have been enhanced to prevent recurrence of legacy issues for future content additions. | January 2020 International Release | |||||||||
| 9 | Changes for 'On examination' (O/E) and 'Complaining of' (C/O) concepts Jan 2020 release:
July 2020 release:
Content being inactivated will use the reason - component moved elsewhere. Note: some concepts will not have a replacement concept as they are groupers. For example: | January 2020 International Release July 2020 International Release | |||||||||
| 10 | Inactivation of 33359002 |Degeneration (morphologic abnormality)| In order to distinguish the degenerative process from the structure, 33359002 |Degeneration (morphologic abnormality)| has been inactivated as a DUPLICATE, SAME AS 107669003 |Degenerative abnormality (morphologic abnormality)|. All morphologies in the disorder hierarchy have been replaced accordingly. 107669003 |Degenerative abnormality (morphologic abnormality)| 33359002 |Degeneration (morphologic abnormality)| | January 2020 International Release | |||||||||
| 11 | Inactivation of 23583003 |Inflammation (morphologic abnormality) In order to distinguish inflammatory process from structure, 23583003 |Inflammation (morphologic abnormality)| has been Inactivated as DUPLICATE, SAME AS 409774005 |Inflammatory morphology (morphologic abnormality)|. All concepts in the Inflammatory disorder hierarchy have been remodeled accordingly. | January 2020 International Release | |||||||||
| 12 | ICD-O project work IACR have released ICD-O-3.2 as a listing of all new additions, changes and revisions to ICD-O-3.1 in Excel format. The new version, ICD-O-3.2, is recommended for use from 2020. ICD-O-3.2 is not yet available online or in book format. In preparation for the update, the changes have been divided into types and are being investigated/addressed in the ICD-O-3.2 update project. The priority is being given to those that have an impact on clinical safety, e.g., changes of behaviour (benign, malignant etc.) and adding new content for SNOMED CT morphologies, this refers to the 400177003 |Neoplasm and/or hamartoma (morphologic abnormality)| hierarchy. The descriptions with [obs] have been inactivated as outdated because they are artefacts of descriptions from the ICD-O-3 print version for their history tracking. The maps to ICD-O-3.1 are being updated only for error correction purposes for the January 2020 release. The maps to ICD-O-3.2 are out of scope for the January 2020 release and are planned for a future release. | January 2020 International Release | |||||||||
| 13 | Over the Counter Concepts referring to “over the counter” status have been inactivated. Concepts referring to regulatory status or characterization (e.g. over the counter) are out of scope for the International Release since the meaning may vary by jurisdiction and is not consistent internationally. | January 2020 International Release | |||||||||
| 14 | Antigens Required for the Vaccine Products As a Vaccine project work item and based on requests submitted mutually by Argentina and Canada, new antigen concepts (~150) have been added to the Substance hierarchy to be used in the modeling of vaccine products in a future release. | January 2020 International Release | |||||||||
| 15 | Vaccine Poisoning Concepts referring to vaccine poisoning have been inactivated from the International release and moved to the NHS extension per their request. The notion of vaccine poisoning has persisted in ICD 10 under T50 but it is not included in ICD-11; the poisoning aspect seemingly referred to the adjuvants and carriers that are included in the vaccines as opposed to the biological component itself. | January 2020 International Release | |||||||||
| 16 | Traumatic Dislocation Traumatic dislocation concepts are being remodeled according to the new representation using DUE TO "Traumatic event". This work has been partially completed for the Jan 2020 release, resulting in the remaining subhierarchies moving from under "Traumatic dislocation of joint" to "Dislocation of joint". These remaining subhierarchies will be remodeled for the July 2020 release. | January 2020 International Release July 2020 International Release | |||||||||
| 17 | Revision of 298180004 |Finding of range of joint movement (finding) The concepts under the subhierarchy 298180004 |Finding of range of joint movement (finding)| are being remodeled to represent the finding site of <<785818007 |Structure of joint region (body structure)| instead of <<39352004 |Joint structure (body structure)|. Range of movement of a joint region can be impacted by both bone and soft tissues, therefore the use of 39352004 |Joint structure (body structure)| was too restrictive and caused issues in other areas of the terminology. These changes will be made over the course of two releases due to the number of affected concepts. | July 2019 International Release January 2020 International Release | |||||||||
| 18 | Planned changes to Implantation and Insertion procedures Work commenced on content tracker IHTSDO-175 Ongoing structural changes for the Procedure concepts related to the content tracker: It was agreed that not all Insertion and Implantation procedures are surgical. As a result, further work in the hierarchy under 129284003 |Surgical action (qualifier value)| has been undertaken for the January 2020 release and this includes: Work on this project will continue for future releases after January 2020. | January 2020 International Release | |||||||||
| 19 | Replacement of the Stated Relationship files with the new OWL Axiom refset files | 9 |
| Note | ||
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| Users should carefully analyse any potential impact to their systems (upload routines, etc) and make provisions for these changes urgently (if not already done), in order to prevent any issues when these changes come into effect in January 2019. Please contact SNOMED International at support@snomed.org with “OWL Axiom refset files implementation question” in the subject line. |
The inferred relationship file will maintain the same format and structure, though it will no longer contain all necessary and sufficient conditions. The inferred relationship file is represented in Necessary Normal Form for distribution of relationships. It is a collection of all the necessary conditions and represents a subset of the full semantics from the 2018 July release and onwards. Most users will benefit from the improvements in the inferred relationships without requiring changes to their existing systems.
A set of documentations has been developed to support the Logic Profile Enhancements.
- Snomed OWL Toolkit - https://github.com/IHTSDO/snomed-owl-toolkit
- Classifying SNOMED CT using the Snomed OWL Toolkit - https://youtu.be/-91egY9mJqA
- Creating an OWL file containing SNOMED CT - https://youtu.be/sfFbMMioA_4
For any questions, please contact SNOMED International at support@snomed.org with “OWL Axiom refset files implementation question” in the subject line.