| Title | Description |
| EA | Release File Specification | The SNOMED CT Release File Specification formally defines the This specification defines the formats in which SNOMED CT is provided to SNOMED International Members and Affiliates. |
| FG | Template Syntax | The SNOMED template syntax This specification defines the formal rules for representing slots in SNOMED CT expressions, expression constraints or queries. |
| H | Expression Template Language | This specification defines the formal rules for representing expression templates. The language syntax is derived by combining compositional grammar, template syntax and the expression constraint language. |
C | B | SNOMED CT Diagramming Guideline | This document describes a diagrammatic notation for representing the definition of a concept, an expression, or relation the relationship between expressions within SNOMED CT. See also 'SNOMED CT Diagramming Guideline Templates' on the Tooling Documentation tab of the Document Library. |
D | F | SNOMED CT URI Standard | This document provides a specification for the format and usage of SNOMED CT URIs. Such a URI might identify "A clinical idea to which a unique Concept Identifier has been assigned"1. However, it does not specify orstandardiseany aspect of the representation of these things. Appropriate representations may vary greatly depending on use-case requirements and servicesutilisingthe URIs specified here are free to make their own choices. |
A | SNOMED CT Compositional Grammar Specification and Guide | Revised (May 2015) specification of the SNOMED CT Compositional Grammar used for expressions and definitions. The replaces the specification in the current edition of the Technical Implementation Guides. |
C | SNOMED CT Expression Constraint Specification and Guide | Published (September 2015) specification of SNOMED CT Expression Constraints usedforrepresent constraints on the content and structure of an expression. Also used to represent anintensionalsubset of SNOMED CT concepts. This extends, formalized and replaces earlier informal constraint representations such as those documented in HL7 TermInfo Release 1. |
X | Release Format 1 Guide | The specification of the old SNOMED CT release format and guidance on its use. The specification is published for those still using the old format. ** Note RF1 is no longer being maintained or developed as it was replaced by RF2 in 2012 ** |
specification defines a standard format of URIs for identifying various SNOMED CT artifacts, including SNOMED CT components, modules and editions. |
E | Compositional Grammar | This specification defines a standard syntax for representing individual clinical meanings using SNOMED CT expressions. |
F | Expression Constraint Language | This specification defines a formal syntax for representing sets of clinical meanings using SNOMED CT expression constraints. Expression constraints are used for a range of purposes, including restricting the valid values in a health record, intensionally defining a reference set, or restricting the range of an attribute in the SNOMED CT concept model. |
| B | Machine Readable Concept Model | This specification (also known as the MRCM) defines the format used by SNOMED International's Machine Readable Concept Model (MRCM). The MRCM | D | Machine Readable Concept Model | The SNOMED CT Machine Readable Concept Model (MRCM) represents the SNOMED CT concept model rules in a form that can be read and tested by a computer. This specification defines the format used by SNOMED International's MRCM. This format uses the SNOMED CT Reference Set mechanism to provide a file structure with inbuilt versioning, and the Expression Constraint Language to representintensionalSNOMED CT subsets referred to by the concept model rules. This allows distribution of the MRCM usingstandardRF2 reference set files and interpretation of the rules using tools that support the SNOMED CT Expression Constraint LanguageThe MRCM is distributed as a set of reference sets with the SNOMED CT International Edition. |