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

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54 | SNOMED CT Release Format 1 (RF1) Guide July 2012 Figure 19: Nested refinement applied to a body site In some cases, refinements within an expression may be grouped to represent association between a two different refinements. For example, a method and a target site or device as shown in Figure 20 Figure 20: Grouped refinement 2.2.2.3.4. Expressions with multiple focus concepts Some expressions may have multiple concepts followed by optional refinements as shown in Figure 21 Figure 21: An expression with two focus concepts The base of an expression may thus be one or more supertype concepts that are combined to produce a single meaning. © 2002-2012 International Health Terminology Standards Development Organisation CVR #: 30363434
It is important to note that combining concepts at this level presumes that the result is intended to be a single combined meaning which is subsumed by the meaning of the combined concepts. Furthermore, the same refinements apply to the combined meaning of this set of concepts. Some representational forms (e.g. HL7 version 3 Concept Descriptor data type) do not allow combinations to be expressed in this way. However, it is possible to apply a simple logical transformation to create a semantically identical view that can be conveyed in a syntax that supports a single focus concept with refinements (see Figure 22 ). Figure 22: An alternative view of an expression with two focus concepts 2.2.2.3.5. Expressions that include context Structure and Content Guide | 55 Expressions may also explicitly represent the semantic context surrounding a finding or procedure. In these cases, the finding or procedure is nested inside the context component of the expression. The outer layer of the expression, which expresses the context, is sometimes referred to as the context wrapper. The nested expression representing the finding or procedure is sometimes referred to as the "clinical kernel". Figure 23 illustrates how the general concept 281666001 | family history of disorder | can be refined to represent family history of a specific condition. Figure 24 illustrates an alternative (computationally equivalent) representation of the same situation. In this case the family history situation is itself represented by an expression. Figure 23: Family history of a specific type of severe allergy to nuts as close-to-user form expression © 2002-2012 International Health Terminology Standards Development Organisation CVR #: 30363434
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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 and 46: 2.2.1.4.3. Historical relationships
Page 47 and 48: 2.2.2.1.1.2. Refinement attribute n
Page 49 and 50: 2.2.2.1.4.3. Use of "unapproved att
Page 51 and 52: Interim recommendations 1. Wherever
Page 53: 2.2.2.3.1. Close-to-user expression
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"
Page 97 and 98: http://www.augustana.ab.ca/~mohrj/a
Page 99 and 100: version. It seems unwise to prevent
Page 101 and 102: Table DescDualKey Table ConcDualKey
Page 103 and 104: 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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