SNOMED CT® Release Format 1 (RF1) Guide - ihtsdo

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320 | SNOMED CT Release Format 1 (RF1) Guide July 2012 Figure 47: SNOMED CT hierarchy represented in a tree view The process of creating a tree view from the SNOMED CT Relationship table is straightforward as long as a few simple ideas are mastered: • Most standard tree-views controls start from a single root and require that higher level branches must be added before sub-branches. This means that when viewing part of the hierarchy from the bottom up, the tree must be compiled in temporary form before it can be displayed. © 2002-2012 International Health Terminology Standards Development Organisation CVR #: 30363434
• Since the depth of the hierarchy is not known in any particular case, operations that iterate up or down the depth of the hierarchy must be done using a recursive algorithm. However, this recursion must usually be limited since placing the entirety of the SNOMED CT hierarchy in a single tree control is likely to create performance issues and may exceed physical limits on the capacity of the control. • Standard tree view controls are not good at displaying the multiple parent nodes that occur in a multi-axial hierarchy like SNOMED CT. Therefore, some compromises need to be made to present options for navigation up the hierarchy. • Effective use of some tree controls requires unique keys for each node. Multiple parents and multiple roots through the hierarchy mean that the same Concepts will appear in multiple places in the hierarchy. Therefore, the concept Identifier cannot be used to provide a key that is globally unique within the hierarchy. 4.4.2.3. Using "Part of" Relationships for hierarchy navigation In addition to the subtype hierarchy represented by | is a | relationships, SNOMED CT also represents a partonomy hierarchy using | Part of | relationship. This creates an alternative hierarchy which can be also be used for navigation. The difference between these hierarchies is that: • The subtype hierarchy relates body structure concepts to supertypes that represent the whole or any part of an organ or other body part. The fully specified names of these supertype concepts include the word 'structure'. Example: | Right ventricular structure | (is) | is a | | heart structure | • The partonomy hierarchy relates body structure to concepts to concept that represent | the entirety of | or an organ or anatomical structure of which they form part Example: | Entire right ventricle | (is) | part of | | entire heart | 4.4.2.4. Using other Relationships to navigate SNOMED CT content Terminology services Guide (RF1) | 321 Many SNOMED CT Concepts have relationships with content in other areas of terminology. These Relationships are one of the ways in which SNOMED CT provides computer readable definitions for medical concepts. For example, diseases in SNOMED CT generally have a Relationship to the body site affected by the disorder and a Relationship to the morphology associated with the disease. Procedures in SNOMED CT might have Relationships to the concept, which defines the type of surgical action being carried and the procedure site, for example. Examples of Relationships for a disease and a procedure are shown below. A full list of the Relationships that can be used for each type of Concept can be found in Table 3. © 2002-2012 International Health Terminology Standards Development Organisation CVR #: 30363434
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SNOMED CT ® Release Format 1 (RF1)
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Contents | 3 Release Format 1 - Det
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Chapter 1 Preface The purpose of th
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Table 3: Document Types Type Name a
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IHTSDO Glossary (DRAFT) • On line
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Chapter 2 Structure and Content Gui
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Figure 1: Multiple levels of granul
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Table 5: Example: Defining arthriti
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The full definitions of the concept
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Other components (i.e. Relationship
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2.1.2.2.1.3. Linking related Concep
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• Local content requirements that
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Consistent representation is a prer
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Figure 8: Abstract logical model of
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1. As originally stated: : • | Ha
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2.2.1.3.2.3.1. Supertype aspects of
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Figure 11: Example hierarchy with l
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Concept E F G H J K L M Note: Compr
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Concept M List of proximal primitiv
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Table 11: Non-redundant attribute v
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G. | Severe upper limb laceration |
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As a result of this limitation some
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2.2.1.4.3. Historical relationships
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2.2.2.1.1.2. Refinement attribute n
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2.2.2.1.4.3. Use of "unapproved att
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Interim recommendations 1. Wherever
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2.2.2.3.1. Close-to-user expression
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It is important to note that combin
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2.2.2.3.6.1. Example of equivalent
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Figure 25: Alternative expressions
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Figure 27: Possible expressions of
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Figure 28: SCTID Short Format - App
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PartitionId 05 Description A Cross
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SctId 999999990989121104 2.3.2.9. T
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2.3.3.2. Specification for Namespac
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2.3.3.3.1.4. Procedures 2.3.3.3.1.4
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1. Every Concept in an Extension:
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Table 17: Processing Transfers betw
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In May 2008, the HL7 Version 3 Stan
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An expression supports combinations
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digitNonZero= %x31-39 The first cha
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excision of left fallopian tube. No
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This existential restriction is lab
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• In order to generate the OWL ve
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• Though there are many candidate
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2.3.7.2.2.1. Single byte encoding C
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9 0 9 Table 29: The full array for
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else {document.getElementById("out"
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http://www.augustana.ab.ca/~mohrj/a
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version. It seems unwise to prevent
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Table DescDualKey Table ConcDualKey
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The IHTSDO recognizes that, while i
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3.2.2. Release Format 1 - Structure
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3.2.3.2. Core Tables Data - Structu
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Data Fields InitialCapitalStatus De
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3.2.4.1. Subset Mechanism - Structu
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Data Fields ContextId 3.2.4.2.2. Su
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Subset SNOMED CT Top Level Navigati
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• as a combination of codes; •
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Table 41: Cross Mapping Tables Cros
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Table 44: Cross Map Targets Table K
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The History Mechanism is also used
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In addition, the ReferencedId field
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Table Descriptions Descriptions Rel
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Table 49: Relationships depending o
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Table 51: Changes to Relationships
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Table 52: Changes to Relationships
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• The only Relationships that it
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ComponentId ConceptId ReleaseVersio
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A readme.txt file is distributed wi
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Value 6 10 11 Limited Moved elsewhe
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As new concepts are added to SNOMED
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Table 73: DescriptionStatus Values
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3.2.9.2.2.4. InitialCapitalStatus T
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3.2.9.3. relationships tables Each
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3.2.9.3.2.3. ConceptId2 Table 84: -
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An integer value that expresses an
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3.2.9.4.1.2.4. SubsetType Table 95:
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A string that identifies a Context
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3.2.9.4.2.1.2. Data Fields Table 10
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• MemberStatus 3.2.9.4.2.3.1.1. S
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3.2.9.4.2.4.1.3. MemberStatus Table
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3.2.9.4.2.5.2. Data Fields Table 11
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3.2.9.4.2.7.1.1. SubsetId Table 124
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3.2.9.4.2.8.1.3. MemberStatus Table
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3.2.9.4.3. Subset Definition File P
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3.2.9.5.1.2.3. MapSetSchemeId Table
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This discussion of rules is include
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3.2.9.5.1.3.2.3. MapRule Table 151:
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3.2.9.5.1.4.2.3. TargetRule Table 1
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RELAT_NMS = column in the LOINC tab
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The value of the SNOMED CT / LOINC
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The SNOMED CT Relationships Table e
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LOINC Analyte Name(s) DESMETHYLAMIO
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LOINC Analyte Name(s) COMPLEMENT IC
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The information provided includes d
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3.2.9.6.4.1.2. ReleaseVersion Table
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Value 6 7 8 9 10 11 Note: Name Limi
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3.2.9.6.5.1.1. ComponentId Table 17
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Release Format 1 is represents a sn
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RF1 Descriptions Table Descriptions
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Table 177: Concepts Table Use of re
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Use of recommended additional indic
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Use of recommended additional indic
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Table 184: Cross Map Sets Table Use
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Keys Partition Size Type Field Name
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Table 192: Word Equivalents Table U
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3.2.10. The Stated relationships ta
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Figure 41: Overview of Cross Map Sc
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Table 197: Cross Maps Sets Table Ma
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Table 201: Cross Maps Sets Table Ma
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Table 205: Cross Map Sets Table Map
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If this approach is followed, there
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This approach allows a more consist
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1. A record may contain many record
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• Temporally related to the selec
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CONCEPTID 95333004 7119001 95336007
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CONCEPTID 109778006 109788007 15270
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CONCEPTID 417163006 417746004 12820
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CONCEPTID 102706005 1677001 9145400
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CONCEPTID 399023006 399154007 39905
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CONCEPTID 399306005 399239005 39937
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CONCEPTID 125086000 78678003 388393
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CONCEPTID 339008 47002008 128419007
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CONCEPTID 16817006 15367004 1580700
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CONCEPTID 14509009 39250009 8627300
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CONCEPTID 122868007 122465003 78817
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CONCEPTID 19207007 74923002 6639100
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CONCEPTID 54305003 84100007 3216600
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CONCEPTID 255496004 255499006 24646
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CONCEPTID 62834003 5668004 34810001
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CONCEPTID 53224005 4150005 74636004
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CONCEPTID 47538007 19359003 3011000
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3.2.13. Enumerated values Value 0 1
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Page 271 and 272: 3.3. Release Format 2 Update Guide
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Page 275 and 276: 3.3.3.4. Backward compatibility The
Page 277 and 278: 3.3.4.5. Field Ordering Records in
Page 279 and 280: externalised structures such as Ref
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Page 329 and 330: • 302402006 | radius and/or ulna
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Page 343 and 344: 4.5. Testing and traversing subtype
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Page 347 and 348: 4.5.5.2.4. Using the transitive clo
Page 349 and 350: Figure 55: Terminology server provi
Page 351 and 352: A field in the Component History Ta
Page 353 and 354: Cross maps table A data table consi
Page 355 and 356: • References Table Inactive compo
Page 357 and 358: A field in the Cross Maps Table tha
Page 359 and 360: A Subset that specifies sets of Nav
Page 361 and 362: A field in the Concepts Table that
Page 363 and 364: TargetId A SNOMED CT Identifier tha
Page 365: WordText A field in the Word Equiva
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