SNOMED CT January 2021 International Edition - SNOMED International Release notes
Release Date | 20210131 |
Release Status | PRODUCTION release |
Document Version | 1.0 |
Introduction
Background
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.
Purpose
This document provides a summarized description of the content changes included in the January 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 January 2021 International Edition release.
Scope
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.
Audience
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 January 2021 International Edition release.
Content Development Activity
Summary
Continuous quality improvement and enhancement of existing content is an ongoing process undertaken by SNOMED International in preparation for every release. The January 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
NOTICE Change to Production Release
The December 31st Member Release has been changed in time for the final Production Release on 31st January 2021. The Member Release should therefore be considered obsolete and should not be used for anything but test purposes. As always then, the final Production Release should be used in all systems.
The reason for the changes was as communicated, in order to include important COVID-19 Vaccines content in the January 2021 International Edition, that wasn't available until January itself. Please see section 2.2 below for full details of these changes.
In addition, four concepts were submitted via the CRS for inclusion into the January 2021 release accompanied with the incorrect concept ID. During testing it was identified the following new concepts had concept ID that did not match the descriptions in the National extension from which they originated:
28421000087109|Structure of right suprascapular region of back (body structure)|
28431000087106|Structure of left suprascapular region of back (body structure)|
28271000087107|History of peritoneal dialysis (situation)|
28281000087109|History of attention deficit hyperactivity disorder (situation)|
The four invalid concepts along with all of their related components were "force deleted" from the SNOMED CT January 2021 International release after the Member release (31 December 2020) and before the Production release (January 2021).
The four concepts will retain their current status in a National extension and be considered for promotion to the International release at a future date. Additional validation rules are being created to prevent future recurrence of this issue.
SCT Statistics | |
|---|---|
Domain | #New concepts |
SNOMED CT Concept (SNOMED RT+CTV3) | 3559 |
Body structure (body structure) | 381 |
Clinical finding (finding) | 1706 |
Event (event) | 29 |
Environment or geographical location (environment / location) | 0 |
Observable entity (observable entity) | 180 |
Organism (organism) | 164 |
Pharmaceutical / biologic product (product) | 486 |
Physical force (physical force) | 1 |
Physical object (physical object) | 47 |
Procedure (procedure) | 237 |
Qualifier value (qualifier value) | 41 |
Record artifact (record artifact) | 5 |
Situation with explicit context (situation) | 108 |
Social context (social concept)| | 6 |
Specimen (specimen) | 16 |
Staging and scales (staging scale) | 12 |
Substance (substance) | 103 |
SNOMED CT Model Component (metadata) | 37 |
SCT Statistics for January 2021 Release | |
|---|---|
| #total |
Total number of active concepts | 354448 |
Newly inactivated concepts | 3512 |
Newly reactivated concepts | 17 |
Sufficiently defined | 119603 |
Primitive | 361906 |
COVID-19
Content relating to COVID-19 can be viewed here SNOMED CT COVID-19 Related Content
New content for January 2021 International release - Member Release |
|---|
1119305005 |Vaccine product containing only Severe acute respiratory syndrome coronavirus 2 antigen (medicinal product)| 1119349007 |Vaccine product containing only Severe acute respiratory syndrome coronavirus 2 messenger ribonucleic acid (medicinal product)| 1119350007 |Administration of vaccine product containing only Severe acute respiratory syndrome coronavirus 2 messenger ribonucleic acid (procedure)| |
Updated modeling and terming to conform with Editorial Guide for the following existing concept: 840534001 |Administration of vaccine product containing only Severe acute respiratory syndrome coronavirus 2 antigen (procedure)| Inactivated the following existing concept: 90640007 |Coronavirus vaccination (procedure)| |
To address the need for concepts related to persistent symptoms of COVID-19, three new concepts have been added to SNOMED CT for the January 2021 release. 1119302008 |Acute disease caused by Severe acute respiratory syndrome coronavirus 2 (disorder)| 1119303003 |Post-acute COVID-19 (disorder)| 1119304009 |Chronic post-COVID-19 syndrome (disorder)| |
897034005 Severe acute respiratory syndrome coronavirus 2 antibody test positive (finding) 897035006 Severe acute respiratory syndrome coronavirus 2 antibody test negative (finding) |
897036007 Occupational exposure to Severe acute respiratory syndrome coronavirus 2 (event) |
1017214008 Viremia caused by Severe acute respiratory syndrome coronavirus 2 (disorder)| |
Any concepts in scope for the SNOMED CT to ICD-10 mapping have been mapped and adhere to the World Health Organization current guidelines.
NOTICE
As part of the global effort to tackle the Coronavirus pandemic, SNOMED International has received several requests for content to be added for new vaccines as these have received approval by regulators in multiple countries.
Although the requests were received after the new content deadlines for the January 2021 Release, new concepts have been added in consultation with requestors. These new concepts are deemed to be of low impact and low risk to the release process whilst being of extremely high importance to users of SNOMED CT.
As vaccine-related requests and refinements to the original requests have been submitted to SNOMED International early in January 2021 this content has not been added to the 31st December 2020 Member Release, but instead to the final reviewed content in the Production Release on 31st January 2021.
Further information including details about the new concepts is available here SNOMED CT COVID-19 Related Content
Body structure
New body structure concepts: 381
Demonstration Release of the Anatomy Model
The plan is to implement the new anatomy concept model over forthcoming releases. 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 musculoskeletal system (about 10,000 concepts) is the next hierarchy to be modeled. The concept model requires tooling enhancement to support nested expressions and further discussion about the 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.
Limbs/Girdles
There is mixed-use of the pelvic girdle and pelvic ring, shoulder girdle and shoulder in relation to the free limbs, limbs, and trunk. Existing content has been reviewed with about 200 model changes and impact to over 2000 classification results.
The following is a high-level view of hierarchical relationships for limb structures:
53120007 |Upper limb structure|
896766000 |Structure of free upper limb|
16982005 |Shoulder region structure|
26444007 |Shoulder girdle structure|
61685007 |Lower limb structure|
46862004 |Buttock structure|
29836001 |Hip region structure|
699617006 |Structure of free lower limb|
897012008 |Structure of bone and/or joint of pelvic girdle| - Note, this relationship is missing in the January 2021 release. It will be added in the next release.
The hierarchical relationships for trunk structures:
816092008 |Structure of pelvic cross-sectional segment of trunk|
46862004 |Buttock structure|
29836001 |Hip region structure|
12921003 |Structure of pelvis|
3665003 |Pelvic wall structure|
897011001 |Structure of pelvic ring|
897012008 |Structure of bone and/or joint of pelvic girdle|
Further detail can be found in the document https://docs.google.com/document/d/1zlVNTxuiL7UrvB8mjvDER0qJHzZjqe_ieVVfeqthNvc/edit?usp=sharing
Flexor annular pulley
Over 40 new concepts for flexor annular pulley of digits of hand have been added in this release.
Muscle tendon of toes
Over 20 new concepts have been added for flexor/extensor digitorum brevis/digitorum longus muscle tendons of toes.
Extensor compartment of wrist region
12 new concepts have been added for six extensor compartments of wrist region.
Nasal sinus structure
Update to the subhiearchy to clarify that sinus structure includes bone, cavity, and mucous membrane of sinus. New concepts have been added for bones and cavities of most nasal sinuses.
Lumbar region
The concept |Lumbar region| has been inactivated with reason ambiguous and has been replaced by new concepts |Lumbar region of abdomen| and |Lumbar region of back|.
Existing concepts that reference lumbar region, for example in the clinical finding and procedure hierarchy, have been reviewed and remodeled.
Interdigital webs and spaces of hand and foot
New concepts have been added for interdigital web of hand and interdigital web of foot and the subtypes have been assigned.
Cell hierarchy
The planned revision of Cell hierarchy has been put on hold. Further investigation is needed to determine if the SEP model should be applied for cell structure.
Anatomy changes to support Cancer Synoptic Reporting
New concepts have been added to support this project:
Structure of lower thoracic esophagus (body structure)
Structure of middle thoracic esophagus (body structure)
Structure of upper thoracic esophagus (body structure)
Joint implant/articular surface
Improvements made for articular surface of limb joint body structure concepts so these will now enable proper classification of the joint implants while modeling content in the devices hierarchy.
Inactivation of Tooth Anatomy Concepts
On the recommendation of the Dentistry Clinical Reference Group, the following concepts have been inactivated due to their potential to pose a clinical risk:
39844006 |Structure of mandibular left canine tooth (body structure) | | 40005008 |Structure of mandibular right second molar tooth (body structure) | |
113278005 |Structure of mandibular left central incisor tooth (body structure) | | 72876007 |Structure of maxillary left canine tooth (body structure) | |
89625000 |Structure of mandibular left first molar tooth (body structure) | | 31982000 |Structure of maxillary left central incisor tooth (body structure) | |
77130001 |Structure of mandibular left lateral incisor tooth (body structure) | | 23427002 |Structure of maxillary left first molar tooth (body structure) | |
48402004 |Structure of mandibular left second molar tooth (body structure) | | 25748002 |Structure of maxillary left lateral incisor tooth (body structure) | |
47055002 |Structure of mandibular right canine tooth (body structure) | | 66303006 |Structure of maxillary left second molar tooth (body structure) | |
15422005 |Structure of mandibular right central incisor tooth (body structure) | | 80647007 |Structure of maxillary right canine tooth (body structure) | |
28480000 |Structure of mandibular right first molar tooth (body structure) | | 22120004 |Structure of maxillary right central incisor tooth (body structure) | |
82628004 |Structure of mandibular right lateral incisor tooth (body structure) | | 5140004 |Structure of maxillary right first molar tooth (body structure) | |
11712009 |Structure of maxillary right lateral incisor tooth (body structure) | | 7121006 |Structure of maxillary right second molar tooth (body structure) | |
The concepts have been inactivated with reason 'ambiguous' and a historical association target of the permanent and deciduous tooth. For example: Structure of mandibular left lateral incisor tooth (body structure) has been inactivated as ambiguous and replaced by Structure of deciduous mandibular left lateral incisor tooth (body structure) and Structure of permanent mandibular left lateral incisor tooth (body structure).
Reference set updates
Updated and validated release file for the lateralizable body structure reference set.
Updated and validated release files for the SEP refsets.
Clinical Finding
New concepts added for clinical finding hierarchy: 1702
Quality Initiative
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 January 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:
Stated: A total of 9463 concepts had changes made to the Stated relationships in the model.
Inferred: A total of 15750 concepts affected by inferred changes.
QI Project focus for January 2021 release (work has begun or been completed) | |
|---|---|
419199007|Allergy to substance (finding)| | 56246009|Hypertrophy (morphologic abnormality)| |
37782003|Damage (morphologic abnormality)| | 708039003|Inflammatory lesion (morphologic abnormality)| |
5294002 |Developmental disorder (disorder)| (excluding congenital disorders) | 4147007|Mass (morphologic abnormality)| |
87642003|Dislocation (morphologic abnormality)| | 708041002|Mechanical lesion (morphologic abnormality)| |
25723000|Dysplasia (morphologic abnormality)| | 52988006|Lesion (morphologic abnormality)| |
1806006|Eruption (morphologic abnormality)| | 36191001|Perforation (morphologic abnormality)| |
107682006|Fibrosis AND/OR repair abnormality (morphologic abnormality)| | 30217000|Proliferation (morphologic abnormality)| |
31883006|Fused structure (morphologic abnormality)| | 125671007|Rupture (morphologic abnormality)| |
76197007|Hyperplasia (morphologic abnormality)| | 19130008|Traumatic abnormality (morphologic abnormality)| |
Fracture of vertebra without spinal cord lesion (disorder)
Based on input from the Editorial Advisory Group and a member stakeholder:
269061001 |Fracture of vertebra without spinal cord lesion (disorder)| and descendants have been inactivated with a status of 'Ambiguous' and the historical association POSSIBLY EQUIVALENT TO = 50448004|Fracture of vertebral column (disorder)|. These concepts originated from ICD-9 to represent the notion of "Fracture of X without mention of Y".
This type of term is not represented in ICD-10 or ICD-11. As "without mention" is not semantically equivalent to "without" and could mean that the information was not available in the record abstraction, these concepts are considered to be ambiguous in their meaning.
Malignant neoplasm
Updates for content relating to malignant neoplasm have now been completed with the exception of those concepts which belong to the hierarchy 269475001 |Malignant tumor of lymphoid, hemopoietic AND/OR related tissue (disorder)|.
Allergy to vaccine
Editorial guidelines and content for concept pattern "Allergy to X vaccine" have been updated for the January 2021 Release.
Adverse reaction to vaccine
Editorial guidelines and content for concept pattern "Adverse reaction to X vaccine" have been updated for the January 2021 Release.
Iatrogenic disorder
Subtypes of 12456005 |Iatrogenic disorder (disorder)| that do not have the word iatrogenic in the FSN have been remodeled so that they are no longer a subtype of this concept.
New subtypes have been added to 12456005 |Iatrogenic disorder (disorder)| where the disorder specifies iatrogenic in the FSN.
Lichen sclerosus et atrophicus
25674000 Lichen sclerosus et atrophicus (disorder) has been inactivated with reason outdated and replaced with new concept 895454001 Lichen sclerosus (disorder).
A new morphology concept 895217008 Lichen sclerosus (morphologic abnormality) has been created and used to remodel the new concept and its 20 descendants. This improvement has resulted in 895454001 Lichen sclerosus (disorder) having no stated subtypes (with all Sufficiently Defined where possible).
Contact dermatitis
Updated the modeling for 40275004 |Contact dermatitis (disorder)| and subtypes to adhere with a newly constructed template.
Hernia of abdominal cavity
The finding site value for hernia disorder concepts (excluding obstructed hernias which are being managed separately) has been reviewed and changes made where required to improve classification results.
Fetal finding
The value for the 363698007 |Finding site| attribute for fetal concepts has been updated to << 123037004 |Body structure| MINUS << 55460000 |Fetal structure| unless the site is a unique body structure present during the fetal period.
The fetal semantics are captured using the 246454002 |Occurrence|=303112003 |Fetal period| relationship. These modeling changes have been applied to the fetal content within the Clinical finding hierarchy. Fetal procedure concepts will be reviewed as part of the Procedure QI work.
Fetal or neonatal effect of maternal medical problem
206002004|Fetal or neonatal effect of maternal medical problem (disorder)| and descendants have been inactivated. Replacement concepts that do not include 'or' in the descriptions have been added as subtypes of 70591005|Fetal disorder (disorder)| and 22925008|Neonatal disorder (disorder)|.
Spina bifida
67531005|Spina bifida (disorder) and subtypes have been remodeled and marked as sufficiently defined where appropriate.
'On Examination' and 'Complaining of' concepts
'On examination' and 'Complaining of' concepts have been inactivated in the International release and moved back to the UK extension.
Disorder X without Disorder Y
The vast majority of existing X without Y concepts originated from ICD-9 with the specific meaning of "X disorder without mention of Y disorder". As the phraseology indicates a lack of data about disorder Y as opposed to a specific exclusion, this type of concept has not been included in ICD-10, nor proposed for ICD-11, except in the case of "Traumatic brain injury without open intracranial wound".
Addition of new X without Y concepts may only be made under the following conditions:
The request for new content must be accompanied by a rationale as to the difference between "X disorder without Y disorder" and "X disorder."
Approval for addition is given by the Head of Terminology.
For the most part, existing X without Y concepts will be inactivated as AMBIGUOUS with a historical MAY BE relationship to "X disorder". Exceptions to inactivation will be made on a case-by-case basis.
Ventricular outflow tract obstruction
Occurrence 'congenital' has been removed from 253546004|Left ventricular outflow tract obstruction (disorder) and 253530007 |Right ventricular outflow tract obstruction (disorder) with remodel of subtypes.
Human immunodeficiency virus
Human immunodeficiency virus Centers for Disease Control and Prevention and Human immunodeficiency virus World Health Organization class content has been updated to align with the current categories.
Chromosome replaced with ring or dicentric
268294001 |Chromosome replaced with ring or dicentric (disorder)| has been inactivated and replaced by 1010276004 |Ring chromosome (disorder). All subtypes have been remodeled and marked sufficiently defined where appropriate. 23345003 |Ring chromosome (morphologic abnormality)| has been remodeled to align with expert input to have monosomy, trisomy and ring chromosome concepts as siblings in the morphology hierarchy.
Review of 419099009 |Dead (finding)| and 397709008 |Patient died (finding)|
397709008 |Patient died (finding)| inactivated as a "Duplicate component" with historical association to 419099009 |Dead (finding)|. All of the subtypes of 397709008 |Patient died (finding)|moved to hierarchy 366044004 |Finding of place of death (finding)| concepts that include 'patient' in FSN inactivated with status outdated and replaced by concept that does not use 'patient' in the descriptions. 304215001 |Patient died during operation (finding)| inactivated and replaced with 876883006 |Died during operation (finding)| subtype of 183676005 |Died in hospital (finding)|. 184297005 |Patient died in hospital (finding)| inactivated as a duplicate of 183676005 |Died in hospital (finding)|
Nutrition finding
Remodeled relationships of descendants of 366358006 |Finding of nutrient intake (finding)| to align with template Nutrition intake (finding) - v1.0 (Please note, you may have to register for Confluence user account in order to access this link).
Approximately 160 new definitions for nutrition content promoted from the US Extension with the approval of the Nutrition Clinical Reference Group.
Social Determinants of Health (SDoH) - Clinical Finding
In line with SNOMED CT priorities, and working with the US Extension of SNOMED CT to make Social Determinants of Health (SDoH) content available for international usage on the subject matter of food insecurity. This work was based on submissions from the US CRS for content for SDoH originating from the consensus-driven standards being developed by the Gravity project: https://confluence.hl7.org/display/GRAV/The+Gravity+Project
A new concept was added with a definition: 1078229009 |Food security (finding)|
New definition for 733423003 |Food insecurity (finding)|
Also supporting SDoH work:
1010682008 |Not entitled to social services assistance due to income above limit (finding)|
Content Tracker Project Updates
Work completed for the following Content Project:
IHTSDO-668 Congenital absence vs. congenital partial absence.
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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Convergent Medical Terminology (CMT)
New CMT concepts: 621
Procedure
New concepts for procedure hierarchy: 237
Computed tomography angiography
After consultation with clinical stakeholders and the Editorial Advisory Group, the following changes have been implemented:
418272005|Computed tomography angiography (procedure)| and all subtypes have been remodeled to include attribute 424361007 |Using substance (attribute)| and value 385420005 |Contrast media (substance)| in the role group.
The descriptions for 418272005|Computed tomography angiography (procedure) and subtypes have been updated to explicitly state ‘with contrast.’
Where logical equivalence has been identified once the above changes have been implemented one of the concepts has been inactivated, in these cases the existing concept that stipulates 'with contrast' in the FSN has been retained.
Fluoroscopic angiography
After consultation with clinical stakeholders and the Editorial Advisory Group, the following changes have been implemented:
Remodeling of 420040002|Fluoroscopic angiography (procedure)| and all subtypes to include attribute 424361007 |Using substance (attribute)| and value 385420005 |Contrast media (substance)| in the role group.
The descriptions for 420040002|Fluoroscopic angiography (procedure)| and subtypes have been updated to explicitly state ‘with contrast.'
Remodeling as described above for 743 concepts.
New descriptions were added to 640 concepts, including Fully Specified Name, Preferred Term and all synonyms.
2 new concepts were added.
117 Primitive concepts were made Sufficiently Defined - Note where logical equivalence was identified once the above changes were implemented this resulted in 11 concepts being inactivated, in these cases the existing concept that stipulated contrast in the FSN was retained.
Administration of vaccine
Updated inactivation reason to Outdated for "administration of vaccine products" that refer to "double" or "triple" but not for those that also refer to additional vaccines.
Social Determinants of Health (SDoH) Procedure
New evaluation procedure concepts:
1004109000 |Assessment of goals to achieve food security (procedure)|
1002223009 |Assessment of progress toward goals to achieve food security (procedure)|
1002224003 |Assessment for food insecurity (procedure)|
1002225002 |Assessment of barriers in food insecurity care plan (procedure)|
Also
1004110005 |Coordination of resources to address food insecurity (procedure)|
Laboratory procedure
Inactivation of 3 misplaced laboratory procedure concepts:
167350008 |Urine microscopy: no cells (procedure)|
167351007 |Urine microscopy: no epithelial cells (procedure)|
167352000 |Urine microscopy: no white cells (procedure)|
All referred to new findings concepts.
Nutrition procedure
Added one procedure concept for Nutrition: Administration of parenteral nutrition (procedure)|.
Remodeled relationships of many descendants of 182922004 |Dietary regime (regime/therapy)| to align with template.
Content Tracker Project Updates
Work continues on content tracker IHTSDO-175.
There are ongoing structural changes for the Procedure concepts related to the content tracker. Work on this project will continue for future releases after July 2021.
Collaboration/Harmonization Agreements
Orphanet
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.
The alpha release is now available for feedback, for more information please see April 2020 SNOMED CT Orphanet Simple Map package ALPHA release available
All of the concepts added for the Orphanet project have been mapped to ICD-10.
ICD-11 Update
A total of 500 new concepts were added for the January 2021 release.
Global Medical Device Nomenclature Agency (GMDNA)
33 new device concepts were added to the physical object hierarchy for GMDN for the January 2021 release.
For the GMDN mapping equivalence tables:
33 new concepts have been added to in scope and mapped.
199 concepts have been modified and removed from the mapping tool as out of scope.
84 concepts have been deemed obsolete and removed from the mapping tool and flagged as out of scope.
16 concepts have been flagged as out of scope for SNOMED CT and removed from this map.
ICD-O-3.2 Update
6 new morphologies have been added to the 108369006 |Neoplasm (morphologic abnormality)| sub-hierarchy and mapped to ICD-O-3.1, or researched and mapped to 'no target' as a suitable morphology code is not available in ICD-O-3.1:
1078227006 |High-grade non-invasive papillary urothelial carcinoma (morphologic abnormality)|
128804002 |Primary cutaneous CD30 antigen positive T-cell lymphoproliferative disorder (morphologic abnormality)|
397353001 |Lymphomatoid papulosis (morphologic abnormality)|
878856000 |Malignant lymphomatoid granulomatosis (morphologic abnormality)|
878865007 |Rhabdomyomatous mesenchymal hamartoma (morphologic abnormality)|
878881002 |Trichoblastoma (morphologic abnormality)|
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