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 | Replacement of the Stated Relationship files with the new OWL Axiom refset files Following on from all of the previous announcements providing early visibility of the transition plan, SNOMED International would now like to provide technical details of the planned migration from Stated Relationships to OWL files. This plan has been discussed and agreed with numerous stakeholders from the community, and will be implemented over the course of the next two International Releases, as follows: January 2019:
July 2019:
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.
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. | January 2019 International Release + July 2019 International Release | ||
| 2 | LOINC timeline changes - please refer to Roadmap link here LOINC | July 2018 and potentially other future releases | .- On hold | |
| 23 | 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 revision of sub-hierarchy of skin structure. The majority changes have been made in the January 2018 26107004|Structure of musculoskeletal system (body structure)| has been planned for the January 2019 release. The rest body systems will be completed in July 2018 release.revised in the future releases. The For July 2018 release, the subject area for revision of IS A relationships will be determined and updated in the following confluence page. | July | 20182019 International | EditionRelease |
| 34 | Summary of Drugs changes Groupers Chemical structure
Groupers Dispositions
Groupers Intended site
Medicinal product (MP)
Medicinal product form (MPF)
Clinical drug (CD)
Pharmaceuticaldose form
General The Alpha Release is a snapshot of the work-in-progress authoring environment; not all concepts are in scope for review at this time. Feedback given for concepts noted as out of scope will be rejected. For drugs:
For dose forms:
Briefing Briefing note - Use of Additional Axiom Functionality and Remodeling Product Roles.pdf | July 2018 International Edition | ||
| 4 | Summary of Substances Changes Top Level
Disposition groupers
Role groupers Role groupers within the substances hierarchy are being inactivated where this is possible without creating disruption in other hierarchies. At the start of this work there were approximately 600 role groupers. Currently in the region of 100 role grouper substance concepts have been inactivated or remodelled.This work is ongoing. Many of these role grouper concepts remain in the substances hierarchy pending a solution for the roles concepts within the terminology as a whole and so will still be present in the July 2018 release. Structural groupers Structural groupers within the substance hierarchy have been modelled as primitive concepts. Existing structural grouper concepts in the substances hierarchy have been retained where appropriate and have been remodelled to conform to SCT Editorial policy. New structural grouper concepts have been added. Groupers that identify X or derivatives where X is a specific substance will be inactivated. Some of these concepts have already been inactivated. As the implementation of the IS Modification attibute is carried out the remainder of these concepts will be inactivated. Structural groupers that reference a chemical group will be retained. e.g. Amides and derivatives (substance) Where the structural group name also refers to a specific chemical the grouper has been re-termed “Substance with X structure” e.g. Substance with tetracycline structure (substance) Combined groupers Combined groupers that include a role will be inactivated where this is possible without causing disruption in other hierarchies. Inactivation of some of these concepts in the substances hierarchy is waiting on a solution for the roles concepts within the terminology as a whole and so will still be present in the July 2018 release. Groupers of disposition + structure will be retained in the substance hierarchy. Existing concepts have been remodelled to conform to SCT Editorial policy. Examples as below. Antimony compound with antiprotozoal mechanism of action (substance) Quaternary ammonium compound with anticholinergic mechanism of action (substance) Piperidine derivative with histamine receptor antagonist mechanism of action (substance) New concepts will be added as required. Use of the Is Modification attribute The implementation of the IS Modification attibute has been started. This has achieved a flattening of the substance hierarchy. Priority has been given to the remodelling of substances associated with the medicinal products. This work is ongoing. The following guidelines have been developed. 1. Substances may have zero to many Is modification attribute(s). e.g Iodine (131-I) labelled monoclonal antibody (substance) has 2 IS MODIFICATION attribute values. 2. Salts have a IS MODIFICATION relationship to the base e.g. Doxepin hydrochloride (substance) IS MODIFICATION of Doxepin (substance) 3. Hydrates have a IS MODIFICATION relationship to the unspecified salt e.g. Caffeine hydrate (substance) IS MODIFICATION of Caffeine (substance) 4. Anhydrous salts have a IS MODIFICATION relationship to the unspecified salt e.g. Theophylline anhydrous (substance) IS MODIFICATION of Theophylline (substance) 5. Stereoisomers are subtypes of the unspecified substance. e.g.. Dextrothyroxine IS A thyroxine. 6. There is no IS MODIFICATION relationship between stereoisomers. Further guidelines will be added to the published documentation as they are developed. The initial population of the IS MODIFICATION attribute is still subject to manual authoring input to ensure compliance to Editorial guidelines and so some areas of content may appear to be non-conformant in the Alpha release data. | July 2018 International Edition | 5 | Internal QA 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. |
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' for the July 2019 release. | July 2019 International Release | |||
| 5 | Planned Inactivation of 186005001|Other ethnic non-mixed (NMO)| 186005001|Other ethnic non-mixed (NMO)| and children will be inactivated with a status of MOVED ELSEWHERE. | July 2019 International Release | ||
| 6 | Summary of Substances Changes
| July 2019 International Release | ||
| 7 | Summary of Changes for the Drug Project For 2019-January, CDs that had not yet been sufficiently defined were relocated to be descendants of 770654000 |TEMPORARY parent for CDs that are not updated (product)| (n≈2700). Concepts that could not be mapped to a corresponding dm+d or RxNorm concept have been inactivated as Outdated for the 2019-July Release with a historical relationship to a corresponding MPF-only concept (or to a MP-only concept if no appropriate MPF-only concept existed at the time of inactivation). (n≈870). The remainder of the concepts (n≈1800) being reviewed and most are expected to be sufficiently defined for the 2019-July Release. Further early visibility updates will be provided as work progresses. | July 2019 International Release | ||
| 8 | Summary of Organism Changes
| July 2019 International Release | ||
| 9 | Quality Initiative Abrasion - As a result of changes made during the QI project for the January 2019 release, there are now 2 concepts which have the same preferred term. 781488002 |Abrasion of foot (finding) and 211402004 |Abrasion of foot (disorder) 782201009 |Abrasion (finding)| and 399963005 |Abrasion (disorder)| These concepts will be addressed as part the QI project for the July 2019 release. Note there are changes to the Service Level Agreement for the CRS as a result of the Quality Initiative: | July 2019 International Release | ||
| 10 | Concrete domains and numeric representation Numerics are represented by concepts in the Medicinal product concept model in SNOMED CT, which is an interim solution before the implementation of concrete domains to support data types, such as decimal, integer, string and date/time. The implementation of concrete domains depends on the OWL expression reference set and the update of inferred relationship file. The first complete OWL expression refset will be available in the July 2019 international release. It will take time to update the specification for the inferred relationship file and consult with the community of practice. When they are ready, strength in medicinal product model can be transformed to concrete domains. The transformation will be completed by technical changes without impact to classification results. | July 2019 International Release | ||
| 11 | 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 Release | ||
| 12 | 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 Release | 6 | Internal QA Inactivation of Agencies and organizations (qualifier value) and subtypes: moved to UK extension i.e. 66 concepts inactivated. |
| 7 |
| |||
| 8 |