Extensions for Using Data Elements from FHIR R4 in FHIR R4B
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Extensions for Using Data Elements from FHIR R4 in FHIR R4B - Downloaded Version null See the Directory of published versions

CodeSystem: FilterOperator

Official URL: http://hl7.org/fhir/filter-operator Version: 4.0.1
Standards status: Normative Maturity Level: 5 Responsible: HL7 International / Terminology Infrastructure Computable Name: FilterOperator

The kind of operation to perform as a part of a property based filter.

This Code system is referenced in the content logical definition of the following value sets:

  • This CodeSystem is not used here; it may be used elsewhere (e.g. specifications and/or implementations that use this content)

This case-sensitive code system http://hl7.org/fhir/filter-operator defines the following codes:

CodeDisplayDefinition
= Equals The specified property of the code equals the provided value.
is-a Is A (by subsumption) Includes all concept ids that have a transitive is-a relationship with the concept Id provided as the value, including the provided concept itself (include descendant codes and self).
descendent-of Descendent Of (by subsumption) Includes all concept ids that have a transitive is-a relationship with the concept Id provided as the value, excluding the provided concept itself i.e. include descendant codes only).
is-not-a Not (Is A) (by subsumption) The specified property of the code does not have an is-a relationship with the provided value.
regex Regular Expression The specified property of the code matches the regex specified in the provided value.
in In Set The specified property of the code is in the set of codes or concepts specified in the provided value (comma separated list).
not-in Not in Set The specified property of the code is not in the set of codes or concepts specified in the provided value (comma separated list).
generalizes Generalizes (by Subsumption) Includes all concept ids that have a transitive is-a relationship from the concept Id provided as the value, including the provided concept itself (i.e. include ancestor codes and self).
exists Exists The specified property of the code has at least one value (if the specified value is true; if the specified value is false, then matches when the specified property of the code has no values).