This page is part of the FHIR Specification (v4.0.1: R4 - Mixed Normative and STU) in it's permanent home (it will always be available at this URL). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions . Page versions: R5R4BR4R3
must Must An action with this behavior must be included in the actions processed by the end user; the end user SHALL NOT choose not to include this action.
could Could An action with this behavior may be included in the set of actions processed by the end user.
must-unless-documented Must Unless Documented An action with this behavior must be included in the set of actions processed by the end user, unless the end user provides documentation as to why the action was not included.
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