This page is part of the FHIR Specification (v4.3.0: R4B - STU). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions
= = Used to match a value according to FHIR Search rules (e.g., Patient/123, Encounter/2002).
eq Equal The value for the parameter in the resource is equal to the provided value.
ne Not Equal The value for the parameter in the resource is not equal to the provided value.
gt Greater Than The value for the parameter in the resource is greater than the provided value.
lt Less Than The value for the parameter in the resource is less than the provided value.
ge Greater Than or Equal The value for the parameter in the resource is greater or equal to the provided value.
le Less Than or Equal The value for the parameter in the resource is less or equal to the provided value.
sa Starts After The value for the parameter in the resource starts after the provided value.
eb Ends Before The value for the parameter in the resource ends before the provided value.
ap Approximately The value for the parameter in the resource is approximately the same to the provided value. Note that the recommended value for the approximation is 10% of the stated value (or for a date, 10% of the gap between now and the date), but systems may choose other values where appropriate.
above Above The search parameter is a concept with the form [system]|[code], and the search parameter tests whether the coding in a resource subsumes the specified search code.
below Below The search parameter is a concept with the form [system]|[code], and the search parameter tests whether the coding in a resource is subsumed by the specified search code.
in In The search parameter is a member of a Group or List, or the search parameter is a URI (relative or absolute) that identifies a value set, and the search parameter tests whether the value is present in the specified Group, List, or Value Set.
not-in Not In The search parameter is a member of a Group or List, or the search parameter is a URI (relative or absolute) that identifies a value set, and the search parameter tests whether the value is NOT present in the specified Group, List, or Value Set.
of-type Of Type The search parameter has the format system|code|value, where the system and code refer to a Identifier.type.coding.system and .code, and match if any of the type codes match. All 3 parts must be present.
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