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Page At A Glance |
Table Of Contents |
SNOMED CT terminology provides a common language that enables a consistent way of indexing, storing, retrieving, and aggregating clinical data across specialties and sites of care.
SNOMED International maintains the SNOMED CT technical design, the content architecture, the SNOMED CT content (includes the concepts table, the descriptions table, the relationships table, a history table, and ICD mappings), and related technical documentation.
This document provides a summarized description of the content changes included in the July 2021 release of SNOMED Clinical Terms® (SCT) International Release.
It also includes technical notes detailing the known content or technical issues where the root cause is understood, the fix has been discussed and agreed to, but has yet to be implemented.
The SNOMED International Release Notes are available alongside the July 2021 International Edition release.
This document is written for the purpose described above and is not intended to provide details of the technical specifications for SNOMED CT or encompass every change made during the release.
The audience includes National Release Centers, WHO-FIC release centers, vendors of electronic health records, terminology developers and managers who wish to have an understanding of changes that have been incorporated into the July 2021 International Edition release.
Following on from the successful technical previews of the impending Concrete Domains changes, released in September 2020 and February 2021 respectively, SNOMED International are now implementing these changes in the July 2021 International Edition Production release. This contains drug concept strengths and counts expressed as concrete values in a new Relationships file. Please see the following sections for full details of the content and technical changes: |
Continuous quality improvement and enhancement of existing content is an ongoing process undertaken by SNOMED International in preparation for every release. The July 2021 International Release has seen a continuation of the work driven by contributions from: Kaiser Permanente i.e. Convergent Medical Terminology (CMT), Global Medical Device Nomenclature Agency (GMDNA), Orphanet and other domain specific collaborations as well as requests received via the Content Request System (CRS).
Additionally quality improvement activities are advanced via project driven initiatives summarized below. Additional work items impacting every release are updates to the SNOMED CT derived maps such as ICD-10 and ICD-O; details are included in these release notes.
Information about editorial decisions may be found in the SNOMED CT Editorial Guide; mapping guidance for ICD-10 can be found at this link https://confluence.ihtsdotools.org/display/DOCICD10
New Concepts July 2021 Release | |
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Domain | #New concepts |
SNOMED CT Concept (SNOMED RT+CTV3) | 4468 |
Body structure (body structure) | 300 |
Clinical finding (finding) | 2027 |
Event (event) | 6 |
Environment or geographical location (environment / location) | 4 |
Observable entity (observable entity) | 377 |
Organism (organism) | 128 |
Pharmaceutical / biologic product (product) | 644 |
Physical force (physical force) | 0 |
Physical object (physical object) | 317 |
Procedure (procedure) | 308 |
Qualifier value (qualifier value) | 91 |
Record artifact (record artifact) | 1 |
Situation with explicit context (situation) | 92 |
Social context (social concept)| | 3 |
Specimen (specimen) | 10 |
Staging and scales (staging scale) | 29 |
Substance (substance) | 104 |
SNOMED CT Model Component (metadata) | 27 |
SCT Statistics July 2021 Release | |
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#total | |
Total number of active concepts | 350936 |
Total number of active + inactive components | 485977 |
Concept inactivations | 8813 |
Content relating to COVID-19 can be viewed here SNOMED CT COVID-19 Related Content
Any concepts in scope for the SNOMED CT to ICD-10 mapping have been mapped and adhere to the World Health Organization current guidelines.
New body structure concepts: 300
There are approximately 35,000 anatomy concepts to be modeled by different types of 'part of' relationships. The new model will enable the automatic generation of hierarchies to further improve content quality and consistency. The integumentary system (about 2000 concepts) has been modeled. The modeling of the musculoskeletal system (about 10,000 concepts) is currently in progress. The concept model requires tooling enhancements to support nested expressions and the option of inferred relationships for transitive and reflexive attributes. We will inform the community of the schedule for the demo release when the tooling and content are ready. The demo release will help us to gather feedback to evaluate potential impact and options for future releases |
The term 'spine' or 'vertebral column' in descriptions of disorders or procedures are often used loosely in clinical discourse but in actuality can relate to three different general anatomical concepts.
The hierarchy has been reorganized:
The use of terms for combined segments of the spine, such as cervicothoracic, thoracolumbar, lumbosacral and sacrococcygeal are ambiguous in that they might relate to a combination of the segments or just the junctional area of the segments. In order to avoid false assumptions, in the anatomy class the junction of spinal segments have been made explicit by including the word 'junction' in the descriptions. The volume or extent of the junctional zones themselves are not defined consistently in the literature, but most commonly relate to the junction between two segments and one vertebra above and below. In addition, the segmental junctional joints only belong to the superior segment.
Further details can be found here https://confluence.ihtsdotools.org/display/IAP/Review+and+quality+improvement+of+anatomy+relating+to+the+spine (Please note, you may have to register for Confluence user account in order to access this link).
72 new concepts added for improved coverage of joint regions to support the Quality Initiative project.
The above three concepts have been inactivated. Concepts with relationships to these anatomic structures were remodeled with 2 role groups, one representing the finding site of 68703001 |Choroidal structure (body structure)| and the other for the finding site of 5665001 |Retinal structure (body structure)|.
The majority of the modeling changes were for ‘chorioretinal’ disorder concepts and findings and 3 procedures were also remodeled (plus one inactivation of 75278007 |Destruction of chorioretinopathy (procedure)|).
Approximately 54 disorder concepts were remodeled with 2 role groups, including 53854005 |Chorioretinal scar (disorder)| and its 18 subtypes, plus two concept inactivations of 69811008 |Peripheral disseminated choroiditis AND chorioretinitis (disorder)| and 56787009 |Peripheral focal choroiditis AND chorioretinitis (disorder)|. Approximately 30 clinical finding concepts were remodeled including 9 subretinal findings and 7 subretinal disorders all remodeled with a finding site of 41275009|Structure of retinal pigment epithelium (body structure)|.
Concepts in the 266414008 |Supernumerary tooth (morphologic abnormality) sub-hierarchy have been inactivated (approximately 60 concepts).
The spelling for concepts which include 'anulus' in the FSN have been updated to 'annulus'. A synonym with the spelling 'anulus' has been retained for this set of concepts.
For example:
Updated and validated release file for the lateralizable body structure reference set.
Updated and validated release files for the SEP refsets.
The Quality Initiative (QI) project is the implementation of the Quality Strategy. After a successful pilot project for the July 2018 release the next stage has been implemented for subsequent releases including July 2021.
Quality improvement tasks were deployed to improve internal structural consistency and ensure compliance with editorial policy related to the stated modeling of content. Additionally, correction or addition of defining relationships was carried out to accurately reflect current clinical knowledge and ensure the semantic reliability of descriptions associated with a concept.
Total count of changes for the QI project for the July 2021 release:
These figures reflect changes made in both the clinical finding and procedure hierarchies.
Information about the project can be found here Quality Initiative - Progress (Please note, you may have to register for Confluence user account in order to access this link).
QI Project July 2021 release (work has begun or been completed) | |
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5294002 |Developmental disorder (disorder)| (excluding congenital disorders) | 112638000 |Displacement (morphologic abnormality)| |
708530007 |Obstructive morphology (morphologic abnormality)| | 70591005 |Fetal disorder (disorder)| |
442021009 |Enlargement (morphologic abnormality)| | 55680006 |Drug overdose (disorder)| |
75478009 |Poisoning (disorder)| | 1149322001 |Intoxication (disorder)| |
708041002|Mechanical lesion (morphologic abnormality)| | 118245000 |Measurement finding (finding)| |
29696001 |Prolapse (morphologic abnormality)| | 77477000 |Computerized axial tomography (procedure)| |
113091000 |Magnetic resonance imaging (procedure)| | 71173004 |Compression (morphologic abnormality)| |
276654001|Congenital malformation (disorder)| (further revision with update to template) | 782901001 |Insertion procedure (procedure)| |
37068007 |Lateral displacement (morphologic abnormality)| | 781459003 |Medial displacement (morphologic abnormality)| |
New concepts added for clinical finding hierarchy: 2027
The modeling for approximately 3000 descendants of 441952005 |Poisoning caused by chemical substance (disorder)|, 7895008 |Poisoning caused by drug AND/OR medicinal substance (disorder)|, and 1149322001 |Intoxication (disorder)| sub-hierarchies have been updated for compliance with the newly constructed templates (based on feedback and recommendation from the Editorial Advisory Group):
More than 500 concepts of the type “ X poisoning of undetermined intent” were inactivated based on the Editorial Advisory Group recommendation.
The concepts in the clinical finding/disorder hierarchy that are defined by "Due to = << 418019003 |Accidental event (event)|" have an inferred parent of "417746004 |Traumatic injury (disorder)|". While this inference is correct for some concepts, it is not accurate for others e.g. Accidental poisoning subtypes. This is a known issue and a content tracker has been created to resolve the issue in a future release.
The modeling for approximately 2200 descendants of 1149222004 |Overdose (disorder)| were updated for compliance with the newly constructed templates.
More than 400 concepts of type “ X overdose of undetermined intent” were inactivated based on the Editorial Advisory Group recommendation.
Model development and remodeling for Acute rheumatic fever, Rheumatic heart disease and Rheumatoid arthritis including a separate model for the extraarticular manifestations of rheumatoid arthritis and inactivation of 34248003 |Rheumatic inflammation (morphologic abnormality) and 103628006 |Chronic rheumatic inflammation (morphologic abnormality) which have been replaced in defining relationships by 409774005 |Inflammatory morphology (morphologic abnormality)| and 409777003 |Chronic inflammatory morphology (morphologic abnormality)| respectively.
34248003 |Rheumatic inflammation (morphologic abnormality)| and 103628006 |Chronic rheumatic inflammation (morphologic abnormality)| had been used inconsistently for some rheumatic fever and rheumatic heart disease concepts, and a number of concepts for both rheumatic arthritis and rheumatoid arthritis. In total 82 concepts previously used 34248003 |Rheumatic inflammation (morphologic abnormality)| and 7 concepts previously used 103628006 |Chronic rheumatic inflammation (morphologic abnormality)|.
A new model was developed sufficiently defining 23685000 |Rheumatic heart disease (disorder)| and 48 subtypes, and a new model developed for sufficiently defining 195528001 |Acute rheumatic fever (disorder)| and 10 subtypes and both sub-hierarchies were fully remodeled for the July 2021 release.
A new model was developed for the extra-articular manifestations of rheumatoid arthritis, and 32 relevant concepts fully remodeled and aligned under parent concept 52661003 |Extra-articular rheumatoid process (disorder)|.
Approximately 69 disorder concepts that are descendants of 367534004 Supernumerary tooth (disorder) have been remodeled to subsume under 371136004 Disorder of tooth development (disorder) and have had the value of their 116676008 |Associated morphology (attribute) relationship changed to 91431006 |Supernumerary structure (morphologic abnormality)|.
Concepts in the 266414008 |Supernumerary tooth (morphologic abnormality) sub-hierarchy have been inactivated (approximately 60 concepts).
"Injury of X' concepts have been remodeled to reflect their generic nature by assigning the parent of "Traumatic or non-traumatic injury".
Concepts with an FSN that includes the term 'acute cerebrovascular accident' have been reviewed and inactivated because cerebrovascular accident is by its nature an acute disorder. Replacement concepts have been created without inclusion of the word 'acute' where required.
The hierarchy 118245000 |Measurement finding (finding)| is currently undergoing structural updates as part of the Quality Initiative project.
Where appropriate this will include modeling with 363713009 |Has interpretation (attribute)| with above, below, and within reference range attribute values.
These changes will continue to be made over a number of future releases.
609406000 |Pseudoallergic reaction (disorder)| was remodeled and renamed to 609406000 |Non-allergic hypersensitivity reaction (disorder)| (no change in meaning) to reflect current editorial guidelines.
The primitive concept 250171008 |Clinical history and observation findings (finding)| has been inactivated.
8 nutritional finding/disorder concepts with 'infancy childhood and adolescence' in FSN have been inactivated.
For example 717930008 |Severe nutritional stunting in infancy childhood and adolescence (disorder)|.
Classification-derived descendants of 267280004 |Venous complication of pregnancy and/or puerperium (disorder)| have been inactivated.
For example, |Superficial thrombophlebitis in pregnancy and the puerperium - delivered with postnatal complication (disorder)|
Remodeling of concepts specified as idiopathic, etiology unknown, cryptogenic, to be subtypes of 41969006 |Idiopathic disease (disorder)| when appropriate.
The modeling of 43064006|Hydronephrosis (disorder)| and descendants has been reviewed and improved where indicated.
Content in the area of Oroantral communication and fistula has been reviewed and revised in both the disorder and procedure hierarchies.
402625004 |Developmental and/or congenital abnormality of nail (disorder)| was inactivated and its subtypes assigned with more appropriate supertypes and defined where possible.
After review, 399992009 |Erythroderma (disorder)| was marked as primitive and its inferred subtypes reclassified as appropriate.
Concepts which refer to a cardiac pacemaker but do not include "cardiac" in the FSN have been updated to include "cardiac pacemaker."
Where the content was ambiguous as to the location of the pacemaker, it was inactivated and replaced. Work on this area of content continues.
302227002 |Ecchymosis (finding)| and descendants have been remodeled and defined where appropriate.
200983001 |Pityriasis lichenoides (disorder)| and descendants have been remodeled with a change to finding site.
19410003 |Macrocephaly (disorder)| has been inactivated and replaced by two concepts:
1829003|Microcephalus (disorder)| has been inactivated and replaced by two new concepts:
Subtype concepts have been added as appropriate to these new concepts.
FSN has been updated for 185 concepts (across hierarchies) to align with this rule "An active FSN should not contain the special characters &, %, $, @ or #.", and also with the editorial guidance for special characters.
5 new concepts added for housing instability finding.
Added 20 nutrition finding concepts.
Notice: 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. |
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Notice: '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 to' and update the Editorial Guide for this area. The Editorial Guide and all concepts that are currently modeled as 'Co-occurrent and due to' will be updated over future release cycles. |
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New CMT concepts: 700
Focus areas include:
New concepts for procedure hierarchy: 308
Concepts which refer to a cardiac pacemaker but do not include "cardiac" in the FSN have been updated to include "cardiac pacemaker."
Where the content was ambiguous as to the location of the pacemaker, it was inactivated and replaced. Work on this area of content continues.
Update to the descriptions for CT arteriography and CT venography concepts in the procedure hierarchy to align with the editorial guide for Computed Tomography - CT.
Both of the above concepts have been inactivated with reason 'ambiguous' and 'Possibly equivalent to' 77477000 |Computed tomography (procedure)|.
One new concept added for education procedure.
Added 24 diet regime/therapy concepts.
Remodeled 120 diet regime/therapy concepts.
60 concepts which included "teletherapy" or "teleradiotherapy" in the FSN were updated to include "external beam radiation therapy."
7 concepts which included "external beam" in the FSN were updated to include "external beam radiation therapy" in the FSN.
49569001 |Consultation in teletherapy (procedure)| was inactivated and replaced with a new concept: 1144767008 |Consultation in external beam radiation therapy (procedure)|.
Concepts in the 271422003 |Fit denture (procedure)| subhierarchy have been remodeled with the finding site of 28035005 |Tooth, gum, and/or supporting structure (body structure)| or subtype.
Ambiguous concepts have been inactivated and replaced. For example 6502003 |Complete lower denture (procedure)| has been replaced by 1144276002 |Fitting of complete lower denture (procedure)|.
Changes have been made to approximately 25 concepts, including approximately 15 inactivations.
Therapeutic role is out of scope for devices so this and related content has been inactivated.
Working in collaboration with Orphanet (http://www.orpha.net/consor/cgi-bin/index.php), creation of new concepts for the original set of prioritized rare diseases has been completed. All of the concepts added for the Orphanet project have been mapped to ICD-10.
The alpha release was published on schedule please see April 2020 SNOMED CT Orphanet Simple Map package ALPHA release available (Please note, you may have to register for Confluence user account in order to access this link).
The Production release of the SNOMED CT to Orphanet Simple Map will be published in October 2021 and will be based on the July 2021 International release of SNOMED CT.
A total of 433 new concepts were added for the July 2021 release.
57 new physical object device concepts were added for the SNOMED CT - GMDN map for the July 2021 release.
245 concepts have been removed from the scope of the map due to modifications to descriptions or obsolete GMDN codes.
The WHO ICD-O version 3 morphology code listing is used for recording the histological cell type and behavior of neoplasms (mainly by cancer registries). ICD-O-3 classification terming of 'NOS' (not otherwise specified) has been historically included in SNOMED CT neoplastic morphologic abnormalities, but this wording is no longer acceptable in SNOMED CT as per Editorial Guidance, and is not meaningful outside of the 'closed' ICD-O-3 classification context.
In the current 400177003 |Neoplasm and/or hamartoma (morphologic abnormality)| sub-hierarchy there are approximately 75 neoplastic morphology concepts containing the terming "no International Classification of Diseases for Oncology subtype (morphologic abnormality)" and/or the description terming "no ICD-O subtype" and they are utilized in the modeling of about 460 disorders in the 55342001 |Neoplastic disease (disorder)| hierarchy.
An ongoing project will inactivate concepts and descriptions termed "no International Classification of Diseases for Oncology subtype (morphologic abnormality)" and "no ICD-O subtype" with reason Outdated (pending the development of a specific inactivation reason for classification schema entities) and they will be replaced with either a new neoplasm morphology concept or pointed to an existing replacement morphology concept and at the same time their related disorders are being remodeled. This work is being carried out with expert input when required from the pathologists in the Cancer Synoptic Reporting Clinical Project Group. For example: 79074005 |Odontoma, no International Classification of Diseases for Oncology subtype (morphologic abnormality)| has been inactivated and replaced with new concept 1156647001 |Benign odontoma (morphologic abnormality)|. The project also involves identifying non-synonymous descriptions on these morphology concepts originating from ICD-O-3 and also similar synonyms on some disorders, and inactivating these synonyms and recreating as new concepts where appropriate.
For the July 2021 release approximately half of these concepts have been inactivated, comprising 38 morphological abnormality concepts termed "no International Classification of Diseases for Oncology subtype."
In some cases the work has overlapped with the next planned larger phase of the project which will be addressing those groupers containing the word "- category" and 6 of these groupers have been inactivated e.g. 409703003 |Adrenal cortical adenoma - category (morphologic abnormality)|.
Approximately 250 new concepts have been added to support the SNOMED CT to International Classification for Nursing Practice equivalence product.
Over 300 concepts representing cancer synoptic reporting content were added or updated in the areas of histologic type, histologic grade, invasion and lymph nodes. This content primarily encompasses observable entity concepts and also includes supporting concepts from other hierarchies, including properties, techniques, staging scales and body structures.
Cancer synoptic reports are used by many member countries to record pathology examination of cancer specimens including the College of American Pathologists (US and Canada), Royal College of Pathology (UK), Royal College of Pathology Australasia (Australia, New Zealand), PALGA (The Netherlands), Swedish Society of Pathology, and others.
For more information about this project, please see Cancer Synoptic Reporting Clinical Project Group (Please note, you may have to register for Confluence user account in order to access this link).
New concepts added: 6
New concepts added: 91
2 new technique concepts were added to the Qualifier value hierarchy with a use case of defining COVID-19 tests.
New concepts added: 3
New concepts added: 92
New concepts added: 317
Physical object concepts that are described as a kit or set have been inactivated with reason 'nonconformance to editorial policy' without a replacement concept. Exceptions are noted in the editorial guidelines for the Physical object hierarchy.
New attribute types added for:
Existing attribute types for 'Has surface characteristic' and 'Has device characteristic' have been inactivated.
Further details are available in the briefing note posted here Devices Project (Please note, you may have to register for Confluence user account in order to access this link).
New concepts added: 10
New concepts added: 377
The body height concepts in the observable entity hierarchy have been remodeled:
New content additions to represent parameter observables:
Work in this area is ongoing and additional changes will be made.
Added 115 new nutrition observable entity concepts.
A review and update of mental health function and state observables has been undertaken by the Mental and Behavioral Health Clinical Reference Group in preparation for work to define mental health clinical findings and disorders. The resulting improvement in clinical findings will be the correct subsumption of concepts enabling improved searching/selection of content and analysis of patient groups.
For example: 413384008 |Ability to perform cognitive activity (observable entity)| assigned the additional parent of 311465003 |Cognitive functions (observable entity)| so clinical finding concepts using this attribute value in modeling would usefully and correctly classify as subtypes of 373930000 |Cognitive function finding (finding)| or one of its subtypes.
New concepts added: 128
More than 3000 concepts in the organism hierarchy related to various breeds and were inactivated from the International release and moved to the veterinary extension.
Based on the editorial guidelines, breeds are restricted to the veterinary domain.
For further details on the planned changes in this area, please refer to the Drugs Project Please note, you may have to register for Confluence user account in order to access this project and the relevant link. |
New concepts added: 644
A review has been initiated of instances where the Basis of strength substance (BoSS) and Precise active ingredient (PAI) combination differs for the same dose form (e.g. for a conventional release oral tablet, we would expect the BoSS + PAI combination would be the same for all existing concepts).
As a result, approximately 120 clinical drug concepts have been inactivated and replaced by existing content or new concepts. Note: This review will span multiple releases.
The SNOMED CT Editorial Advisory Group (EAG) has recommended replacement of the existing 'Has product characteristic' and 'Has ingredient characteristic' attributes used to model vaccine products in the Medicinal product hierarchy with more explicit attributes. For the July 2021 International edition of SNOMED CT:
The existing attributes 860781008 |Has product characteristic (attribute)| and 860779006 |Has ingredient characteristic (attribute)| will no longer be used for modeling in the International Release. Inactivation of these attributes will be discussed with the EAG. Users and implementers are encouraged not to use these attributes and to request addition of specific attributes to support modeling in national extensions moving forward.
The following editorial guides are now available:
Access via the SNOMED CT Document Library https://confluence.ihtsdotools.org/display/DOCEG
3018 concepts were moved to the Veterinary Extension.
This number includes more than 3000 concepts in the organism hierarchy as noted above in Section 2.16.1.
New concepts added: 27
For further details on the planned changes in this area, please refer to Substance Project Please note, you may have to register for Confluence user account in order to access this project and the relevant links above. |
New concepts added: 104
4 new concepts added.
A set of documentation has been developed to support the Logic Profile Enhancements. (Please note, you may have to register for Confluence user account in order to access the links below.)
For any questions, please contact SNOMED International at support@snomed.org with “OWL Axiom refset files implementation question” in the subject line.
The MRCM includes new rows to indicate that the new attribute types are expected to take a concrete domain - specifically numbers - as target values.
MRCM for new attributes:
Extend the range of:
MRCM remove:
Further details can be found here MRCM changes in the July 2021 release (Please note, you may have to register for Confluence user account in order to access this project and the relevant links above).
The July 2021 International Edition is the first release after the transition to Concrete Domains.
Please contact SNOMED International with questions at support@snomed.org with “Concrete Domains transition question” in the subject line.
The SNOMED CT to the International Statistical Classification of Diseases and Related Health Problems, Tenth Revision (© World Health Organization 1994) 2016 Version map (SNOMED CT to ICD-10 Map) is included in the SNOMED CT International release as a Baseline. The SNOMED CT to ICD-10 Map was created to support the epidemiological, statistical and administrative reporting needs of SNOMED International member countries and WHO Collaborating Centers.
The SNOMED CT to ICD-10 Map is released in Release Format 2 (RF2) only. It is located in the file der2_iisssccRefset_ExtendedMapFull_INT_20200731.txt, which is in the Map folder under Refset, in each of the three RF2 Release Type folders.
The SNOMED CT to ICD-10 Map is released as Refset 447562003 |ICD-10 complex map reference set (foundation metadata concept)|.
The map is a directed set of relationships from SNOMED CT source concepts to ICD-10 target classification codes. The SNOMED CT source domains for the MAP are limited to subtypes of 404684003 |clinical finding|, 272379006 |event| and 243796009 |situation with explicit context|. The target classification codes are ICD-10 2016 release.
The map provided for the July 2021 release has been updated, and now represents a complete map from SNOMED CT International release to ICD-10 2016 version.
· U08 Personal history of COVID-19
· U09 Post COVID-19 condition
· U10 Multisystem inflammatory syndrome associated with COVID-19
We would welcome feedback on any issues that users of the map may detect when using the map. Issues should be submitted via mapping@snomed.org
The Technical Guide Exemplars document has now been moved from the International Edition release package to a Confluence page. This page can be found as part of the ICD-10 Mapping Technical Guide (see Appendix B), which is hosted here: http://snomed.org/icd10map
The repository containing the toolkit enabling simple SNOMED CT to OWL conversion and classification can be found here, 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.
Known Issues are content or technical issues where the root cause is understood, and the resolution has been discussed and agreed but has yet to be implemented. This can be due to a number of reasons, from lack of capacity within the current editing cycle, to the risk of impact to the stability of SNOMED CT if the fix were to be deployed at that stage in the Product lifecycle.
For the current SNOMED CT International edition, the following Known Issues were identified, and agreed to be resolved in future editing cycles:
Resolved issues are Known Issues which were not fixed as part of the previous release lifecycle, but which have now been resolved in the latest release. They can also be issues found during the Alpha and Beta testing of the current release, which were resolved before the final deployment of the associated Member release. Finally they can be issues which were reported or found during the testing phase, but which have been closed without any action taken.
The Resolved Issues for the current Snomed CT International edition can be found here:
For future reference, the RF2 package convention dictates that it contains all relevant files, regardless of whether or not there is content to be included in each particular release. Therefore, the package contains a mixture of files which contain both header rows and content data, and also files that are intentionally left blank (including only a header record). The reason that these files are not removed from the package is to draw a clear distinction between files that:
This allows users to easily distinguish between files that have purposefully been removed or not, as otherwise if files in option 2 above were left out of the package it could be interpreted as an error, rather than an intentional lack of content in that release.
A new file has been included since the July 2020 International Edition, containing metadata about the Release package itself. This has been created in conjunction with feedback from the community, and as such initially contains the following fields:
The file is in .JSON format, to ensure that it is both machine-readable and human-readable, and is named "release_package_information.json".
The metadata will be extended and refined going forward, in order to ensure that it contains the most useful information possible. If you have any ideas about any other useful information to include, please send them to info@snomed.org, along with a business case explaining how the information would benefit stakeholders. Please be aware that this use case will then be assessed by SNOMED International, and the new metadata will only be included in the configuration file if the business case is strong enough.
Following on from the successful technical preview of the impending Concrete Domains changes, released in February 2021, SNOMED International are now implementing the changes in the July 2021 International Edition Production release. This contains drug concept strengths and counts expressed as concrete values in a new Relationships file. The RF2 Release package for July 2021 therefore incorporates the following changes:
All relationships for attributes of strength and count for medicinal products inactivated
New relationships for new concept model data attributes of strength, count, product name, and supplier for medicinal products will be added
Stated OWL Axiom file changes:
Over the next few months, SNOMED International plans to move to a more frequent (monthly) release schedule for SNOMED CT International Edition. To better understand the impact of the proposed model, we are asking Members to complete a survey, available here. The survey will be available from 31st July to 12th September 2021, but please complete it as soon as possible so that we have time to respond to your feedback. |
Please see the following page for details of all upcoming changes planned for January 2022 and beyond: January 2022 Early Visibility Release Notice - Planned changes to upcoming SNOMED International Release packages
All links provide information that is correct and current at the time of this Release. Updated versions may be available at a later date, but if so these will need to be requested from the relevant SNOMED International teams.
NOTE: To access any of the links in the pdf document, please visit the Release Notes @ https://confluence.ihtsdotools.org/display/RMT/SNOMED+CT+July+2021+International+Edition+-+SNOMED+International+Release+notes |
Approvals
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Draft Amendment History
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