proximal primitive supertype

A primitive concept that is a supertype of specified concept and is not a supertype of any other primitive concept that is a supertype or the specified concept.

Notes

• All concepts except the root concept have at least one proximal primitive supertype concept. In many cases this is a top level hierarchy concept. However, in some case one or more intermediate primitive supertypes may exist between the top level concept and a defined concept.

• A concept's proximal primitive supertypes represent aspects of the meaning of that concept that are not formally defined by other axioms.

• The chapter on Proximal primitive modeling in the SNOMED CT Editorial Guide explains the role of proximal primitive supertypes in modeling concepts.

In Figure 1 the conceptsC , D , E and F have a single proximal primitive supertypeB. C onceptA is also primitive, but it is a supertype of B so it is not a proximal primitive supertype of these concepts. Similarly conceptsH , J and N have a single proximal primitive supertype G. Concepts L and M have a single proximal primitive supertypeI. Note that G is not a proximal primitive supertype for these concepts because it is a supertype of concept I. In this hierarchy only concept P has more than one proximal primitive supertypes. The proximal primitive supertypes of concept P are conceptsK** **andI** **as neither of these concepts is a supertype

Figure 1: Illustrative Hierarchy Diagram

• Proximal primitive parent

POC

This is an abbreviation for point of care.

point of care

The time and location at which healthcare professionals deliver healthcare products and services to patients.

Notes

• The term point of care is most often used to indicate a particular activity is carried out at the location where the patient is being seen or treated.

Example

• Point of care testing and point of care documentation.

Alternatives

• POC

• Wikipedia

partition identifier

A value that indicates the type of component that the SCTID identifies.

Notes

• The types of component include concepts, descriptions, and relationships.

• The partition identifier also indicates if the SCTID contains a namespace identifier.

• The partition identifier is made up of the second and third digits from the right of the string rendering of the SCTID.

Alternatives

• PartitionId

primitive concept

A concept without a sufficient definition in the necessary normal form distributed in the relationship.

Notes

• The meaning of a SNOMED CT concept is expressed in a human-readable form by its fully specified name. Each concept also has a formal concept definition that provides a computer-processable representation of the meaning of the concept.

• A primitive concept has a concept definition that is not sufficient to computably distinguish it from other concepts.

Example

• The concept is primitive because the following definition is not sufficient to distinguish atypical appendicitis from any other type of appendicitis:

<<< = = =

• Changes introduced in the July 2018 release of the International Edition allow assertions to be represented as axioms in the OWL axiom reference set file. This will allow concepts to be defined by multiple sufficient definitions, some of which may contain assertions that are not necessarily true.

• Following these changes a concept will be marked as primitive unless it is sufficiently defined by relationships. Although, in some cases, the OWL axioms may provide a sufficient definition that cannot be fully represented as relationships.

A phrase that has the same meaning as another phrase.

• Recognition of phrase equivalents may be useful to support more inclusive text searches for SNOMED CT concepts.

• The phrases "renal calculus" and "kidney stone" can be considered equivalent. However, in some cases only one of these phrases may be included in the synonyms associated with a particular concept. Therefore, searching for terms including either "renal calculus" or "kidney stone" may assist location of an appropriate concept.

precoordinated

This is an abbreviation for precoordinated expression.

precoordinated expression

A SNOMED CT expression that containing a single concept identifier that represents an idea.

Notes

• Precoordinated expressions combine all aspects of a potentially multifaceted concept into a single discrete form.

• The syntax used to represent SNOMED CT expressions is called the SNOMED CT compositional grammar and is formally defined in the Compositional Grammar - Specification and Guide.

Example

• The procedure, laparoscopic emergency appendectomy**** can be represented with the precoordinated expression to record an instance of this procedure. This procedure has at least three distinct facets: removal of appendix ,using a laparoscope , and as an emergency procedure. SNOMED CT precoordinates these facets in one concept.

• Precoordinated

• Precoordination

The steps to enable pre-existing data retrieval predicates to be converted or utilized in a system using SNOMED CT.

• The pre-existing data retrieval predicates include queries, standard reports, and decision support protocols.

A final, formally endorsed SNOMED CT release package intended for live use in appropriately licensed operational systems.

• A production release package represents the authoritative release of the product. Implementers can use it in operational clinical systems.

• The production release status indicates that the releasing party (SNOMED International or the owner of the extension) commits to maintain the release history. Thus the historical audit trail is maintained through the product's lifetime.

A SNOMED CT expression that containing a single concept identifier that represents an idea.

• Precoordinated expressions combine all aspects of a potentially multifaceted concept into a single discrete form.

• The syntax used to represent SNOMED CT expressions is called the SNOMED CT compositional grammar and is formally defined in the Compositional Grammar - Specification and Guide.

• The procedure, laparoscopic emergency appendectomy**** can be represented with the

The time and location at which healthcare professionals deliver healthcare products and services to patients.

• The term point of care is most often used to indicate a particular activity is carried out at the location where the patient is being seen or treated.

• Point of care testing and point of care documentation.

preferred term

The term deemed to be the most clinically appropriate way of expressing a concept in specified language context.

Notes

• The preferred term is a synonym which is indicated as being preferred in the language reference set for the current language context.

Alternatives

• Preferred synonym

Provide Feedback

preferred synonym

This is a synonym for preferred term.

preferred term

The term deemed to be the most clinically appropriate way of expressing a concept in specified language context.

Notes

• The preferred term is a synonym which is indicated as being preferred in the language reference set for the current language context.

Alternatives

• Preferred synonym

Provide Feedback

Provide Feedback

postcoordinated expression

A SNOMED CT expression containing two or more concept identifiers that represent an idea.

Notes

• The concept identifiers in a _ postcoordinated expression_ relate to one another in ways that build more specific clinical ideas. The required meaning is expressed by combining several clinical ideas, each of which is represented by an identified concept.

• The syntax used to represent SNOMED CT expressions is called the SNOMED CT compositional grammar and is formally defined in the Compositional Grammar - Specification and Guide.

Example

• The concept can be refined using the attribute , and the body structure concept to create the following postcoordinated expression :

: =

• Postcoordinated

• Postcoordination

polyhierarchy

This is an abbreviation for polyhierarchical classification.

polyhierarchical classification

A hierarchy in which each node has one or more parents.

Notes

• The subtype relationships of SNOMED CT create a polyhierarchical classification.

• A polyhierarchical classification can be represented as a graph in which each node has a one or more directed links to or from other nodes.

• A node in a polyhierarchical classification cannot be a descendant of itself, which means the hierarchy must not contain cyclic relationships. This type of hierarchy is therefore known as a directed acyclic graph.

• The diagram below shows a polyhierarchy. Each node has one or more parent node so there can be multiple paths from a node to the top (or root) of the hierarchy. For example from node V the paths include the following:

  • V→N→F→B→A

  • V→N→F→C→A

  • V→G→C→A

• Polyhierarchy

production release

This is an abbreviation for production release package.

production release package

A final, formally endorsed SNOMED CT release package intended for live use in appropriately licensed operational systems.

Notes

• A production release package represents the authoritative release of the product. Implementers can use it in operational clinical systems.

• The production release status indicates that the releasing party (SNOMED International or the owner of the extension) commits to maintain the release history. Thus the historical audit trail is maintained through the product's lifetime.

Alternatives

• Production package

• Production release

partitionid

This is an abbreviation for partition identifier.

partition identifier

A value that indicates the type of component that the SCTID identifies.

Notes

• The types of component include concepts, descriptions, and relationships.

• The partition identifier also indicates if the SCTID contains a namespace identifier.

• The partition identifier is made up of the second and third digits from the right of the string rendering of the SCTID.

• PartitionId

This is a synonym for postcoordinated expression.

A SNOMED CT expression containing two or more concept identifiers that represent an idea.

• The concept identifiers in a _ postcoordinated expression_ relate to one another in ways that build more specific clinical ideas. The required meaning is expressed by combining several clinical ideas, each of which is represented by an identified concept.

• The syntax used to represent SNOMED CT expressions is called the SNOMED CT compositional grammar and is formally defined in the Compositional Grammar - Specification and Guide.

This is a synonym for production release package.

A final, formally endorsed SNOMED CT release package intended for live use in appropriately licensed operational systems.

• A production release package represents the authoritative release of the product. Implementers can use it in operational clinical systems.

• The production release status indicates that the releasing party (SNOMED International or the owner of the extension) commits to maintain the release history. Thus the historical audit trail is maintained through the product's lifetime.

This is a synonym for precoordinated expression.

A SNOMED CT expression that containing a single concept identifier that represents an idea.

• Precoordinated expressions combine all aspects of a potentially multifaceted concept into a single discrete form.

• The syntax used to represent SNOMED CT expressions is called the SNOMED CT compositional grammar and is formally defined in the Compositional Grammar - Specification and Guide.

This is an abbreviation for postcoordinated expression.

A SNOMED CT expression containing two or more concept identifiers that represent an idea.

• The concept identifiers in a _ postcoordinated expression_ relate to one another in ways that build more specific clinical ideas. The required meaning is expressed by combining several clinical ideas, each of which is represented by an identified concept.

• The syntax used to represent SNOMED CT expressions is called the SNOMED CT compositional grammar and is formally defined in the Compositional Grammar - Specification and Guide.

This is a synonym for proximal primitive supertype.

A primitive concept that is a supertype of specified concept and is not a supertype of any other primitive concept that is a supertype or the specified concept.

• All concepts except the root concept have at least one proximal primitive supertype concept. In many cases this is a top level hierarchy concept. However, in some case one or more intermediate primitive supertypes may exist between the top level concept and a defined concept.

A hierarchy in which each node has one or more parents.

• The subtype relationships of SNOMED CT create a polyhierarchical classification.

• A polyhierarchical classification can be represented as a graph in which each node has a one or more directed links to or from other nodes.

• A node in a polyhierarchical classification cannot be a descendant of itself, which means the hierarchy must not contain cyclic relationships. This type of hierarchy is therefore known as a directed acyclic graph.