Description Of Targets Business Model

See the Conformance Package for further details. The CodeSystem resource is used to declare the existence of and describe a code system or code system supplement and its key properties, and optionally define a part or all of its content.

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Also known as Ontology, Terminology, or Enumeration value set - specifies a set of codes drawn from one or more code systems, intended for use in a particular context. Value sets select a set of codes from one or more code systems to specify which codes can be used in a particular context.

The CodeSystem resource is used to declare the existence of a code system, and its key properties: Identifying URL and version Description, Copyright, publication date, and other metadata Some key properties of the code system itself - e. Code System resources may also be used to define supplements, which extend an existing code system with additional designations and properties.

The CodeSystem resource is not intended to support the process of maintaining code systems.

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Instead, the focus is on publishing the properties and optionally the content of a code system for use throughout the FHIR eco-system, such as to support value set expansion and validation. A CTS2 server can be used to maintain code systems which are then published using the CodeSystem resource The CodeSystem resource documents the inherent structure and capabilities of code system, whereas the TerminologyCapabilities resource documents what a server hosting the code system is capable of The CodeSystem resource declares the existence of a code system and its key properties including its preferred identifier. The NamingSystem resource identifies the existence of a code or identifier system, and its possible and preferred Description Of Targets Business Model.

The key difference between the resources is who creates and manages them - CodeSystem resources are managed by the owner or publisher of the code system, who can properly define the code system features and content. NamingSystem resources, on the other hand, are frequently defined by 3rd parties that encounter the code system in use, and need to describe the use, but do not have the authority to define the features and content.

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Additionally, there may be multiple authoritative NamingSystem resources for a code system, but ideally there would be only one authoritative CodeSystem resource identified by its canonical URL that is provided by the code system publisher, with multiple copies distributed on additional FHIR servers or elsewhere and used where needed. Both Code System supplements and Concept Maps may be used to define relationships between concepts in different systems. ConceptMaps are assertions of the relationships between different concepts that are associated with particular contexts of use, while CodeSystem supplements are used to define inherent properties and semantics of the concepts in the code system 4.

This is one very common area where significant clinical safety risks occur in practice. Implementers should be familiar with the Description Of Targets Business Model in Using Codes in Resources. The location URI is constructed by appending the logical id to the server base address where the instance is found and the resource type. The element is named url rather than uri for legacy reasons and to strongly encourage providing a resolvable URL as the identifier whenever possible. This canonical URL is used to refer to all instances of this particular code system across all servers and systems.

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Ideally, this URI should be a URL which resolves to the location of the master version of the code system, though this is not always possible. However, while a new version of the FHIR specification is being prepared, code systems that are published in the drafts will not be found in the current FHIR specification version.

Because it is common practice to copy cache code systems locally, most references to code systems can use either the canonical URL or the location "literal" URL. The third code system identifier is used typically for external references to the code system outside of FHIR: CodeSystem.]