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

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354 | SNOMED CT Release Format 1 (RF1) Guide July 2012 Note: Field name in SNOMED CT toolkit Dualkey table A table in which each row represents a Dualkey. See Word Search Tables - Summary (2.3.7.4.3). Note: File or Table name in SNOMED CT toolkit Duplicate term A Term that occurs in several Active Descriptions. Duplicate Terms are valid in SNOMED CT since the intention is to provide natural terms used by clinicians rather than to apply formalized phraseology. The formalized form is provided by the Fully Specified Name and these are not permitted to be duplicated. Although Duplicate Terms can be identified by string matching, a Duplicate Terms Subset is specified to indicate the presence and likely priority of duplicates when undertaking a search. Note: Component status value Duplicate terms subset A Subset Type that identifies Duplicate Terms and allows a priority to be specified between these for use in searches. Excluded word A word that in a given language is so frequently used, or has so poor a discriminating power, that it is suggested for exclusion from the indices used to support textual searches of SNOMED CT. Excluded Words are represented as a row in the Excluded Words Table Note: Field name in SNOMED CT toolkit Excluded words table A data table in which each row represents an Excluded Word. See Word Search Tables - Summary (2.3.7.4.3). Note: File or Table name in SNOMED CT toolkit Fully specified name A term unique among active Descriptions in SNOMED CT that names the meaning of a Concept code in a manner that is intended to be unambiguous and stable across multiple contexts. Note: Field name in SNOMED CT Release Format 1 Historical relationship A Relationship that refers from an Inactive Concept to an Active Concept that duplicates, corrects, replaces or disambiguates it. Note that Historical Relationships are used in a way similar to References for Descriptions. However, as part of the Relationships Table they are more readily accessible for computation and retrieval of legacy data. History mechanism The history mechanism is the information distributed with SNOMED CT designed to track the history of changes to its logic definitions and descriptions. The history mechanism is supported by two distribution tables: • Component History Table © 2002-2012 International Health Terminology Standards Development Organisation CVR #: 30363434
• References Table Inactive component A SNOMED CT component that is not intended for use. Inactive components are included in release files to provide a historical record of the content of the terminology at a given point in time. Note: A component is inactive when the most recent row with the relevant Component.id in the Full Release of the relevant Release File has the value Component.active=0 (zero). The most recent row for a component is determined based on the Component. effectiveTime value. Alternatives Inactive Related Links Meaning of the active field Release Types The 'active' field. Inactive concept A Concept that is not intended to be actively used. This is determined by the ConceptStatus. Concepts with status values other than 'Current' (0) and 'Pending Move' (11) are regarded as inactive. Concepts with status 'Pending Move' (11) are regarded as inactive if the Concept is accessible in the new target Namespace as of the release date. Inactive Concepts remain in SNOMED CT to support legacy data recorded when the Concepts were in active use. See also Active Concept. Note: Component status value Alternatives Retired concept Inactive description A Description that is not intended to be actively used. This is determined by a combination of the DescriptionStatus, the DescriptionType in the Language or Dialect in use and the ConceptStatus of the associated Concept. Descriptions are inactive if one or more of the following apply: • DescriptionStatus not Current (0) or Pending Move (11); • OR DescriptionType unspecified (0) in a chosen Language / Dialect Inactive Descriptions remain in SNOMED CT to support legacy data recorded when these Descriptions were in active use. See also Active description. Note: Component status value - NEEDS REVISING FOR RF2 InitialCapitalStatus A field in the Descriptions Table that specifies whether the capitalization of the first character is significant. If the value of this field is "1" then the first character should remain either in upper or lower case as released. Otherwise the case of the first character may be changed to suit its context in a sentence. Note: Field name in SNOMED CT Release Format 1 Integer A datatype that represents a whole number. SNOMED CT Release Format 1 file and field names | 355 © 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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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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Page 353: Cross maps table A data table consi
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Page 359 and 360: A Subset that specifies sets of Nav
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Page 363 and 364: TargetId A SNOMED CT Identifier tha
Page 365: WordText A field in the Word Equiva
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