SNOMED CT® Release Format 1 (RF1) Guide - ihtsdo
SNOMED CT® Release Format 1 (RF1) Guide - ihtsdo
SNOMED CT® Release Format 1 (RF1) Guide - ihtsdo
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2 | <strong>SNOMED</strong> CT <strong>Release</strong> <strong>Format</strong> 1 (<strong>RF1</strong>) <strong>Guide</strong> July 2012<br />
Contents<br />
Chapter 1: Preface...............................................................................5<br />
Where is the Glossary?............................................................................................................5<br />
Document Properties...............................................................................................................6<br />
Amendment History .................................................................................................................6<br />
Status.......................................................................................................................................6<br />
Additional information...............................................................................................................7<br />
Inventory of Documentation.....................................................................................................8<br />
Copyright Notice.......................................................................................................................9<br />
Chapter 2: Structure and Content <strong>Guide</strong>.........................................11<br />
<strong>SNOMED</strong> CT Technical Overview..........................................................................................11<br />
Components................................................................................................................11<br />
Derivatives...................................................................................................................19<br />
Extensions...................................................................................................................22<br />
Instance data...............................................................................................................24<br />
Logical Abstract Models.........................................................................................................26<br />
Logical Model of <strong>SNOMED</strong> CT Components..............................................................26<br />
Logical Model of <strong>SNOMED</strong> CT expressions................................................................45<br />
Representational Forms.........................................................................................................61<br />
<strong>Release</strong> Files...............................................................................................................61<br />
Representing <strong>SNOMED</strong> CT identifiers........................................................................61<br />
Representing Extensions.............................................................................................68<br />
Representational Forms for Expressions.....................................................................76<br />
Stated Relationships <strong>Guide</strong>.........................................................................................84<br />
Other Representational Forms....................................................................................89<br />
Additional Reference Materials....................................................................................90<br />
Chapter 3: <strong>Release</strong> File <strong>Format</strong>s....................................................102<br />
<strong>RF1</strong> Compatibility and Conversion Tools..............................................................................102<br />
<strong>Release</strong> <strong>Format</strong> 1.................................................................................................................103<br />
<strong>Release</strong> <strong>Format</strong> 1 - Overview....................................................................................104<br />
<strong>Release</strong> <strong>Format</strong> 1 - Structure diagram......................................................................105<br />
Core Table Structure..................................................................................................105<br />
Subset Mechanism....................................................................................................110<br />
Navigation hierarchies...............................................................................................115<br />
Cross-Mapping..........................................................................................................116<br />
Content History..........................................................................................................122<br />
Distribution Files .......................................................................................................138<br />
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