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

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134 | SNOMED CT Release Format 1 (RF1) Guide July 2012 This Relationship can be: • Selectively included or excluded in data retrieval criteria to enable access to relevant information recorded using the inactive equivalent ConceptId; • Used to allow legacy data to be upgraded to include the retained equivalent ConceptId. 3.2.7.2.7.7. Impact on Data Retrieval - Inactivation due to error When a Concept is inactivated and replaced because it requires a significant change a new "REPLACED-BY"Relationship is created to link the Inactive Concept to the replacement Concept. This Relationship can be: • Selectively included or excluded in data retrieval criteria to enable access to relevant information recorded using the replaced version of the ConceptId; • Used to allow legacy data to be upgraded to include the replacement ConceptId. 3.2.7.2.7.8. Impact on Data Retrieval - Inactivation due to ambiguity When a Concept is inactivated and replaced because it was found to be ambiguous, new "MAYBE-A"Relationships are created to link the Inactive Concept to the Concepts that represent each of its possible meanings. This Relationship can be: • Selectively included or excluded in data retrieval criteria to enable access to relevant information recorded using the ambiguous ConceptId; • If these Relationships are included the ambiguous Concept can be included in the results of a search for either of the possible meanings; • Used to allow ambiguous data to be linked to the ConceptIds associated with either or both potential meanings. 3.2.7.2.7.9. Impact on Data Retrieval - Moves between namespaces When a Concept is moved to another Namespace, a new | MOVED TO |Relationship is created pointing from the original Concept to the target Namespace Concept. When a Concept is moved in from another Namespace, a new | MOVED FROM |Relationship is created pointing from the new Concept to the original Concept in the other Namespace. When a Concept is moved in from an Extension Namespace into the SNOMED CT Core Namespace, the | MOVED FROM |Relationship is stored in the Extension relationships table and not the SNOMED CT Core relationships table. These Relationships can be used to allow a check for the replacement Concept in the new target Namespace. • The | MOVED TO | Relationship identifies the target Namespace to be searched; • The | MOVED FROM | Relationship, in material distributed by the organization responsible for the target Namespace, allows identification of the replacement Concept. The | MOVED TO | Relationships exist for Concepts with the ConceptStatusvalues Moved Elsewhere (10) and Pending Move (11). The difference between these Status values is significant. The original Concept can still be used, retrieved and processed pending the availability of a replacement in the other Namespace. In some cases, a Concept marked as Pending Movemay be rejected for inclusion in the other Namespace and its Status in the original Namespace may revert to "Current". 3.2.7.2.7.9.1. Moved Elsewhere The original organization is no longer supporting this as an Active Concept. • It has no Active Descriptions © 2002-2012 International Health Terminology Standards Development Organisation CVR #: 30363434
• The only Relationships that it has are: • " | is a |" "Moved elsewhere Concept". • | MOVED TO |: • Therefore, without the replacement from the other Namespace this Concept cannot be processed or retrieved in any meaningful way. 3.2.7.2.7.9.2. Pending Move The original organization is still supporting this as an Active Concept. • Its Descriptions remain active (also marked with the same Status value). • Its Relationships include: • Its pre-existing Relationships (or those deemed to be appropriate); • " | is a |" "Pending move Concept"; • | MOVED TO | 3.2.7.3. Representation of material in the SNOMED CT First Release This section details the initial settings in the Component History Table for the SNOMED CT First Release. These settings apply to components that were in SNOMED RT or Clinical Terms Version 3prior to the merger of these two terminologies. They also apply to components added to SNOMED CT prior to the First Release. All Concepts in the First Release were regarded as having been added to SNOMED CT on or before the first release date (31 January 2002). Thus each has row in the Component History Table with ChangeType ="Added" and ReleaseVersion determined as follows: • Concepts in releases of SNOMED RT (including those also present in CTV3): • ReleaseVersion = YYYYMMDD (ISO format of date previously recorded in RT release files). • Concepts released in Clinical Terms Version 3 before 31 January 2002 (excluding those also present in RT): • ReleaseVersion = "20020129". • New Concepts in SNOMED CT First Release but not in either SNOMED RT or Clinical Terms Version 3 before 31 January 2002: • ReleaseVersion = "20020131". • New Concepts in any subsequent release of SNOMED CT (whether or not released in CTV3 between SNOMED CT releases): • ReleaseVersion = YYYYMMDD (ISO date of the SNOMED CT release). Some Concepts had a ConceptStatusother than current in the SNOMED CT First Release. This occurred if the Concept: • was non-current in the source terminology or ; • was rendered non-current during the merge of the two terminologies. Release File Formats | 135 © 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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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
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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
Page 105 and 106: 3.2.2. Release Format 1 - Structure
Page 107 and 108: 3.2.3.2. Core Tables Data - Structu
Page 109 and 110: Data Fields InitialCapitalStatus De
Page 111 and 112: 3.2.4.1. Subset Mechanism - Structu
Page 113 and 114: Data Fields ContextId 3.2.4.2.2. Su
Page 115 and 116: Subset SNOMED CT Top Level Navigati
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Page 119 and 120: Table 41: Cross Mapping Tables Cros
Page 121 and 122: Table 44: Cross Map Targets Table K
Page 123 and 124: The History Mechanism is also used
Page 125 and 126: In addition, the ReferencedId field
Page 127 and 128: Table Descriptions Descriptions Rel
Page 129 and 130: Table 49: Relationships depending o
Page 131 and 132: Table 51: Changes to Relationships
Page 133: Table 52: Changes to Relationships
Page 137 and 138: ComponentId ConceptId ReleaseVersio
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Page 143 and 144: As new concepts are added to SNOMED
Page 145 and 146: Table 73: DescriptionStatus Values
Page 147 and 148: 3.2.9.2.2.4. InitialCapitalStatus T
Page 149 and 150: 3.2.9.3. relationships tables Each
Page 151 and 152: 3.2.9.3.2.3. ConceptId2 Table 84: -
Page 153 and 154: An integer value that expresses an
Page 155 and 156: 3.2.9.4.1.2.4. SubsetType Table 95:
Page 157 and 158: A string that identifies a Context
Page 159 and 160: 3.2.9.4.2.1.2. Data Fields Table 10
Page 161 and 162: • MemberStatus 3.2.9.4.2.3.1.1. S
Page 163 and 164: 3.2.9.4.2.4.1.3. MemberStatus Table
Page 165 and 166: 3.2.9.4.2.5.2. Data Fields Table 11
Page 167 and 168: 3.2.9.4.2.7.1.1. SubsetId Table 124
Page 169 and 170: 3.2.9.4.2.8.1.3. MemberStatus Table
Page 171 and 172: 3.2.9.4.3. Subset Definition File P
Page 173 and 174: 3.2.9.5.1.2.3. MapSetSchemeId Table
Page 175 and 176: This discussion of rules is include
Page 177 and 178: 3.2.9.5.1.3.2.3. MapRule Table 151:
Page 179 and 180: 3.2.9.5.1.4.2.3. TargetRule Table 1
Page 181 and 182: RELAT_NMS = column in the LOINC tab
Page 183 and 184: 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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