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

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304 | SNOMED CT Release Format 1 (RF1) Guide July 2012 This approach is more complex than importing the new release. However, it may make it easier to retain local configuration data (e.g. selected Subsets and any Extensions previously installed). If a terminology server suppliers pre-imports SNOMED CT releases for distribution to their users, this approach facilitates the production of re-distributable updates. 4.2.2.3. Changes to Relationships Unlike other core files the released Relationships Table has no status field and only active Relationships are distributed. Therefore Relationship changes are not recorded in the Component History Table and requires a full import of this table or the need for an intermediate table to determine which Relationships were added and removed in the distribution. 4.2.3. Importing Extensions Terminology servers should be able to import Extensions. The process of importing an Extension is similar to importing the main distribution files. However, some additional functionality is required to ensure appropriate installation, maintenance and use of Extensions. Applications should: • Allow the users or user communities to specify the Extensions to be recognized by their systems. Before recognizing any Extension, users should check that: • The Extension has been supplied by the IHTSDO or another organization authorized by the IHTSDO to provide such Extensions. • You are satisfied with the quality control procedures of the providing organization : • Authorization of an organization to produce Extensions does not imply any seal of approval related to the quality of Extensions provided by those organizations ; • Installation of Extensions is done entirely at the risk of the user subject to their license agreement with the provider of the Extension and/or the application developer. • Check each Extension prior to installation to ensure that: • It is one of the Extensions recognized by the user. • Any dependencies of the Extension have been met. These dependencies may include: • Installation of a particular SNOMED CT release; • Prior installation of other Extensions. • The installation procedure has pre-checked all components in the Extension to ensure that: • All ComponentIDs: • Are unique; • Have partition identifier and namespace-Identifier values appropriate to the provider of that Extension • Have a valid check-digit • All fields meet data type, size and value constraints specified for the relevant tables. Caution: If any components fail any of these tests the entire Extension must be rejected. • Import Extension files in a way that replaces earlier versions of the same Extension but add to, rather than replacing, the SNOMED CT core distribution and other installed Extensions; © 2002-2012 International Health Terminology Standards Development Organisation CVR #: 30363434
• Reject, highlight or apply other agreed business rules to information received by the system that contains SCTIDs for components from namespaces that are not in the list, or recognized Extensions. 4.2.4. Providing access to history information When a new release is installed, an application providing record services may need to update records, indices, queries, or protocols to take account of changes to the terminology. Caution: Updates to records as a result of terminology version changes should be limited to addition of updated information. The integrity of original clinical record entries must not be compromised by any updating process. The original entry should be retained and should be reused to support subsequent updates. To support these maintenance activities a terminology server should provide access to: • Information in the Component History Table indicating which components have been changed since the previous release. • Information in the References Table identifying components which replace or were duplicated by inactive components: • Not applicable to Concepts (see next bullet below). • Information in the Relationships Table identifying Concepts that: • Replace an "erroneous" Concept: • RelationshipType | REPLACED BY | • Are identical to a "duplicate" Concept: • RelationshipType | SAME AS | • Are potential meanings of an "ambiguous" Concept: • RelationshipType | MAY BE A | • Were previously subtypes of an Inactive Concept: • RelationshipType"WAS A" (Future Use). Access to the Component History Table and References Table may only be required to support for a time a limited set of maintenance activities following each release. However, access to information about Active Concepts related to Inactive Concepts is often required for day-to-day operation of the application. For example, it will affect the selective retrieval and analysis of data information originally recorded with a Concept that is now inactive. 4.3. Foundation Terminology services Terminology services Guide (RF1) | 305 The following list summarizes a set of essential services that any terminology server is likely to require. Some of these are reiterated in more detail in subsequent sections. In other cases, support for a more complex service presumes the existence of one or more of these foundation services. © 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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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
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Page 283 and 284: eplaced by more descriptive ones if
Page 285 and 286: descriptions associated with concep
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Page 289 and 290: was inactivated. Each Reference ind
Page 291 and 292: Finally, add members to the Referen
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Page 297 and 298: In certain cases, an RF1 data file
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Page 317 and 318: 4.4.1.4.1. Avoiding multiple hits o
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Page 343 and 344: 4.5. Testing and traversing subtype
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Page 347 and 348: 4.5.5.2.4. Using the transitive clo
Page 349 and 350: Figure 55: Terminology server provi
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Page 353 and 354: 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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