|Vocabulary Work Group||Maturity Level : N||
||Use Context : Any|
This is a value set defined by the FHIR project.
The meaning of the hierarchy of concepts in a code system.
|Committee:||Vocabulary Work Group|
|OID:||2.16.840.1.113883.4.642.3.784 (for OID based terminology systems)|
|Source Resource||XML / JSON|
This value set is used in the following places:
This value set includes codes from the following code systems:
This value set contains 4 concepts
|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.".|
See the full registry of value sets defined as part of FHIR.
Explanation of the columns that may appear on this page:
|Lvl||A few code lists that FHIR defines are hierarchical - each code is assigned a level. For value sets, levels are mostly used to organize codes for user convenience, but may follow code system hierarchy - see Code System for further information|
|Source||The source of the definition of the code (when the value set draws in codes defined elsewhere)|
|Code||The code (used as the code in the resource instance). If the code is in italics, this indicates that the code is not selectable ('Abstract')|
|Display||The display (used in the display element of a Coding ). If there is no display, implementers should not simply display the code, but map the concept into their application|
|Definition||An explanation of the meaning of the concept|
|Comments||Additional notes about how to use the code|