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TX: CodeSystem filter-operator

Properties

Profile http://hl7.org/fhir/StructureDefinition/shareablecodesystem
Defining URL http://hl7.org/fhir/filter-operator
Version 5.0.0
Name FilterOperator
Title Filter Operator
Status active
Definition

The kind of operation to perform as a part of a property based filter.
Publisher HL7 (FHIR Project)
Committee vocab
EXT_FMM_LEVEL 5
Value Set Filter Operator

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

Code Display Definition
= 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).