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

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46 | SNOMED CT Release Format 1 (RF1) Guide July 2012 Figure 17: General Abstract Logical Model of a SNOMED CT expression 2.2.2.1. Refinement An expression represents an instance of the meaning defined of the focus concepts are as modified by the refinements. Various types of refinement are possible. Of these some are fully supported by the SNOMED CT Concept Model and released data while other possible methods of refinement step outside those boundaries. 2.2.2.1.1. Refinement of defining Relationships 2.2.2.1.1.1. Refinement individual attribute values A defining relationship of the base concept can be refined by applying a value that is a subtype of the defining value. This approach to refinement is fully supported by the SNOMED CT Concept Model. Defining relationships that are marked with the refinability property value "not refinable" should not be refined. © 2002-2012 International Health Terminology Standards Development Organisation CVR #: 30363434
2.2.2.1.1.2. Refinement attribute names A defining relationship of the base concept can also be refined by applying a name that is a subtype of the defining attribute name. For example, if the defining relationship specifies a | procedure site | this may be refined to | procedure site - direct | or | procedure site - indirect |. 2.2.2.1.1.3. Refinement of defining Relationship groups If a refinement is applied to one of the defining relationships within a relationship group, it is the group a whole that is refined. It is also permissible for a stated (close-to-user) expression to refine a relationship without grouping the refined relationship or without fully enumerating the group of which it is part. In this case, resolution to an inferred structure should apply the ungrouped relationship value (or partially enumerated group) as a refinement of any group to which that refinement can be appropriately applied. 2.2.2.1.1.4. Nested refinement of defining Relationships The value of a defining relationship may itself be refined. In this case the value of the relationship becomes a post-coordinated expression rather than a precoordinated concept. This occurs most frequently in the following situations: Laterality refinement The laterality qualification applies to the value of the | procedure site | or | finding site | relationship and is logically nested under site. (Note lateralization is discussed separately) Refinement of situation with explicit contexts The | associated finding | or | associated procedure | is a | clinical finding | or | procedure |, which may itself be refined (e.g. with severity). 2.2.2.1.2. Applying values to qualifiers 2.2.2.1.2.1. Applying values to individual qualifiers A qualifying relationship of the base concept can be used to apply a refinement. The nature of the allowable refinement using qualifiers is determined by the value of the "refinability property" of the qualifying relationship. Not refinable The qualifier can only be used to refine the base concept by applying the qualifying value specified in the distributed table. Refinable The qualifier can be used to refine the base concept by applying the qualifying value specified in the distributed table or any subtype of that value. Mandatory to refine The qualifier can be used to refine the base concept by applying a subtype of the qualifying value specified in the distributed table. It cannot be applied with the specified value itself as this is a non-specific grouping value for possible refinements. This approach to refinement is fully supported by the SNOMED CT Concept Model. 2.2.2.1.2.2. Grouping qualifier refinements In theory the value of a qualifier may apply only to the content of one relationship group. Structure and Content Guide | 47 © 2002-2012 International Health Terminology Standards Development Organisation CVR #: 30363434
Page 1 and 2: SNOMED CT ® Release Format 1 (RF1)
Page 3 and 4: Contents | 3 Release Format 1 - Det
Page 5 and 6: Chapter 1 Preface The purpose of th
Page 7 and 8: Table 3: Document Types Type Name a
Page 9 and 10: IHTSDO Glossary (DRAFT) • On line
Page 11 and 12: Chapter 2 Structure and Content Gui
Page 13 and 14: Figure 1: Multiple levels of granul
Page 15 and 16: Table 5: Example: Defining arthriti
Page 17 and 18: The full definitions of the concept
Page 19 and 20: Other components (i.e. Relationship
Page 21 and 22: 2.1.2.2.1.3. Linking related Concep
Page 23 and 24: • Local content requirements that
Page 25 and 26: Consistent representation is a prer
Page 27 and 28: Figure 8: Abstract logical model of
Page 29 and 30: 1. As originally stated: : • | Ha
Page 31 and 32: 2.2.1.3.2.3.1. Supertype aspects of
Page 33 and 34: Figure 11: Example hierarchy with l
Page 35 and 36: Concept E F G H J K L M Note: Compr
Page 37 and 38: Concept M List of proximal primitiv
Page 39 and 40: Table 11: Non-redundant attribute v
Page 41 and 42: G. | Severe upper limb laceration |
Page 43 and 44: As a result of this limitation some
Page 45: 2.2.1.4.3. Historical relationships
Page 49 and 50: 2.2.2.1.4.3. Use of "unapproved att
Page 51 and 52: Interim recommendations 1. Wherever
Page 53 and 54: 2.2.2.3.1. Close-to-user expression
Page 55 and 56: It is important to note that combin
Page 57 and 58: 2.2.2.3.6.1. Example of equivalent
Page 59 and 60: Figure 25: Alternative expressions
Page 61 and 62: Figure 27: Possible expressions of
Page 63 and 64: Figure 28: SCTID Short Format - App
Page 65 and 66: PartitionId 05 Description A Cross
Page 67 and 68: SctId 999999990989121104 2.3.2.9. T
Page 69 and 70: 2.3.3.2. Specification for Namespac
Page 71 and 72: 2.3.3.3.1.4. Procedures 2.3.3.3.1.4
Page 73 and 74: 1. Every Concept in an Extension:
Page 75 and 76: Table 17: Processing Transfers betw
Page 77 and 78: In May 2008, the HL7 Version 3 Stan
Page 79 and 80: An expression supports combinations
Page 81 and 82: digitNonZero= %x31-39 The first cha
Page 83 and 84: excision of left fallopian tube. No
Page 85 and 86: This existential restriction is lab
Page 87 and 88: • In order to generate the OWL ve
Page 89 and 90: • Though there are many candidate
Page 91 and 92: 2.3.7.2.2.1. Single byte encoding C
Page 93 and 94: 9 0 9 Table 29: The full array for
Page 95 and 96: 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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Table and Field Subsets SubsetType
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3.3. Release Format 2 Update Guide
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• The Release Format should minim
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3.3.3.4. Backward compatibility The
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3.3.4.5. Field Ordering Records in
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externalised structures such as Ref
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ContextId If either the RealmId fie
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eplaced by more descriptive ones if
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descriptions associated with concep
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Figure 45: Illustration of module d
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was inactivated. Each Reference ind
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Finally, add members to the Referen
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3.4.1. File Naming Convention - Ove
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• Test/Beta Release File("xsct",
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In certain cases, an RF1 data file
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VersionDate refers to the official,
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Example: Excluding the Fully Specif
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4.2.1.3. Pre-processing of distribu
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• Reject, highlight or apply othe
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Table 236: Essential concept Identi
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The purpose of this section of the
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Table 240: Example results for a Se
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• For each dual key, add rows to
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• Description104951019 is elimina
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4.4.1.4.1. Avoiding multiple hits o
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Table 248: Relationship Example Con
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• Since the depth of the hierarch
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4.4.2.5. Using navigation Subsets t
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Table 253: Concepts used in the Exa
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SubsetId Mem
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• 302402006 | radius and/or ulna
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Now we have tree nodes and their ch
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Subsets may be used to derive table
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• One Subset can be used as the b
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• A Context Concept Subset only r
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• A Navigation Subset specifies a
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• A RealmID identifies the specia
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4.5. Testing and traversing subtype
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This approach removes the need for
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4.5.5.2.4. Using the transitive clo
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Figure 55: Terminology server provi
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A field in the Component History Ta
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Cross maps table A data table consi
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• References Table Inactive compo
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A field in the Cross Maps Table tha
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A Subset that specifies sets of Nav
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A field in the Concepts Table that
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TargetId A SNOMED CT Identifier tha
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WordText A field in the Word Equiva
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