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

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294 | SNOMED CT Release Format 1 (RF1) Guide July 2012 Code "doc" (+) "z" + Code "x" + Code File Type Description Documentation The allowable file types are described in more detail below: Archival/Unsupported File (e.g. zsct) Test/Beta Release File (e.g. xder) • Terminology Data File(" sct") - the set of data files that make up the SNOMED CT terminology. These are: • Concepts table • Relationships table • Descriptions table • Component History table (RF1 only); • References table (RF1 only); • Identifier table (RF2 only). • Derivative Work Data File(" der") - data files that make up a SNOMED CT "derivative work" (a product for use in conjunction with SNOMED CT that cannot be effectively used without the terminology - such as subsets or cross maps). Examples of the files within this group include: • Subsets table (RF1 only); • SubsetMembers table (RF1 only); • CrossMapSets table (RF1 only); • CrossMaps table (RF1 only); • CrossMapTargets table (RF1 only); • Refset table (RF2 only). • Implementation Resource Data File(" res") - data files intended to support developers and with the implementation of SNOMED CT, but that are not necessarily useful to end-users. Examples from the current International Release include: • Canonical table • Stated Relationships table • Implementation Resource Tool(" tls") - software tools or other files that do not contain original SNOMED CT content (i.e. that is not also held elsewhere in the release), but can be of use to implementers. If such files cannot comply with this naming convention (for example, if some other standard applies), then those files should be distributed as part of a ZIP file archive that does conform to this file naming convention. Examples from the current International Release include: • Index Generator. • Documentation(" doc") - documents defining SNOMED CT standards, policies and guidelines, as well as documentation for files or products included in a SNOMED CT release. Most, but not all, files in this group are released in a PDF format. • Archival/Unsupported File("zsct", "zder", "zres", "ztls") - files that are not currently supported or updated, but may be of some use to implementers.These files should only be used with caution and after appropriate review and validation. The letter "z" is inserted in front of the usual FileType code for these files (i.e. "z" + "sct", "der", "res" or " tls"). Examples from the current International Release include: • SNOMED 3.5 to SNOMED RT bridge file; • SNOMED 2 to SNOMED RT bridge file. © 2002-2012 International Health Terminology Standards Development Organisation CVR #: 30363434
• Test/Beta Release File("xsct", "xder", "xres", "xtls") - files distributed as part of a test/beta release, or as a "technology preview". These files should only be used for review and evaluation purposes. The letter "x" is inserted in front of the usual FileType code for these files (i.e. "x" + "sct", "der", "res" or "tls"). 3.4.2.3. Format Tags A Release Format tag must be appended at the end of the three-letter FileType code if the file named is dependent on a particular Release Format specification. The allowable Release Format tags are: • For files that are part of the current Release Format, or applicable only to the current Release Format, the number "1 " should be appended to the FileType code (e.g. "sct1", "der1", "tls1"). • For files that are part of the RF2 Release Format, or applicable only to the RF2 Release Format, the number "2 " should be appended to the FileType code (e.g. "sct2", "der2", "res2"). • If the file is not specific to either Release Format, the three-letter FileType code should be used without a Release Format tag (e.g. "res", "tls" or "doc"). • The FileType code for all terminology and Derivative Work data files ("sct " or "der") must include a Release Format tag ("1" or "2"). For other file types, the Release Format tag is optional. 3.4.3. ContentType element 3.4.3.1. Description The ContentType element of the filename describes the content and purpose of the file. It consists of 2-48 alphanumeric characters in camel case. 3.4.3.2. Rules The content of this element depends on the first element (FileType) of the filename, as described below: • For Data Files("sct", "der" or " res") - the name of the table contained in the file should be used as the value for the ContentType element. Possible values for the RF1 Release Format are: • Concepts • Descriptions • Relationships • ComponentHistory; • References; • Subsets • SubsetMembers; • CrossMapSets; • CrossMaps; • CrossMapTargets; • TextDefinitions; • Canonical; • DualKeyIndex; • WordKeyIndex; • StatedRelationships. Possible values for the RF2 Release Format are: • Concept • Description • Relationship Formats | 295 © 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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Page 267 and 268: 3.2.13. Enumerated values Value 0 1
Page 269 and 270: Table and Field Subsets SubsetType
Page 271 and 272: 3.3. Release Format 2 Update Guide
Page 273 and 274: • The Release Format should minim
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
Page 281 and 282: ContextId If either the RealmId fie
Page 283 and 284: eplaced by more descriptive ones if
Page 285 and 286: descriptions associated with concep
Page 287 and 288: Figure 45: Illustration of module d
Page 289 and 290: was inactivated. Each Reference ind
Page 291 and 292: Finally, add members to the Referen
Page 293: 3.4.1. File Naming Convention - Ove
Page 297 and 298: In certain cases, an RF1 data file
Page 299 and 300: VersionDate refers to the official,
Page 301 and 302: Example: Excluding the Fully Specif
Page 303 and 304: 4.2.1.3. Pre-processing of distribu
Page 305 and 306: • Reject, highlight or apply othe
Page 307 and 308: Table 236: Essential concept Identi
Page 309 and 310: The purpose of this section of the
Page 311 and 312: Table 240: Example results for a Se
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Page 315 and 316: • Description104951019 is elimina
Page 317 and 318: 4.4.1.4.1. Avoiding multiple hits o
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Page 323 and 324: 4.4.2.5. Using navigation Subsets t
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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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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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