codesystem-hierarchy-meaning — CodeSystems — FHIR Core package — FHIR IG | HL7 Workbench

HL7 WorkbenchBetaParser

CodeSystemHierarchyMeaning

activeFHIR Core package4.3.0complete4 concepts

The meaning of the hierarchy of concepts in a code system.

Metadata

Canonical URL: http://hl7.org/fhir/codesystem-hierarchy-meaning
ID: codesystem-hierarchy-meaning
Version: 4.3.0
Publisher: HL7 (FHIR Project)
Case Sensitive: Yes

Concepts (4)

Code	Display	Definition
`grouped-by`	Grouped By	No particular relationship between the concepts can be assumed, except what can be determined by inspection of the definitions of the elements (possible reasons to use this: importing from a source where this is not defined, or where various parts of the hierarchy have different meanings).
`is-a`	Is-A	A hierarchy where the child concepts have an IS-A relationship with the parents - that is, all the properties of the parent are also true for its child concepts. Not that is-a is a property of the concepts, so additional subsumption relationships may be defined using properties or the [subsumes](extension-codesystem-subsumes.html) extension.
`part-of`	Part Of	Child elements list the individual parts of a composite whole (e.g. body site).
`classified-with`	Classified With	Child concepts in the hierarchy may have only one parent, and there is a presumption that the code system is a "closed world" meaning all things must be in the hierarchy. This results in concepts such as "not otherwise classified.".