FHIR Cross-Version Extensions package for FHIR R4 from FHIR R5
0.0.1-snapshot-2 - informative International flag

FHIR Cross-Version Extensions package for FHIR R4 from FHIR R5 - Version 0.0.1-snapshot-2. See the Directory of published versions

CodeSystem: Filter Operator

Official URL: http://hl7.org/fhir/filter-operator Version: 5.0.0
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 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).
child-of Child Of Only concepts with a direct hierarchical relationship to the index code and no other concepts. This does not include the index code in the output.
descendent-leaf Descendent Leaf Includes concept ids that have a transitive is-a relationship with the concept Id provided as the value, but which do not have any concept ids with transitive is-a relationships with themselves.
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).