HL7 Terminology
2.1.0 - Publication

This page is part of the HL7 Terminology (v2.1.0: Release) based on FHIR R4. This is the current published version in it's permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions

CodeSystem: relationalOperator


Defining URL:http://terminology.hl7.org/CodeSystem/v2-0209
Status:Active as of 2019-12-01

HL7-defined code system of concepts used to define the relationship between HL7 segment field names identified in a query construct. Used in HL7 Version 2.x messaging in the QSC segment.

Publisher:HL7, Inc
Committee:Infrastructure And Messaging

Copyright HL7. Licensed under creative commons public domain

Content:Complete: All the concepts defined by the code system are included in the code system resource
OID:2.16.840.1.113883.18.114 (for OID based terminology systems)
Value Set:http://terminology.hl7.org/ValueSet/v2-0209 ( is the value set for all codes in this code system)
Source Resource:XML / JSON / Turtle

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


statushttp://terminology.hl7.org/CodeSystem/utg-concept-properties#statusStatus of the conceptcode
deprecatedhttp://terminology.hl7.org/CodeSystem/utg-concept-properties#v2-table-deprecatedVersion of HL7 in which the code was deprecatedcode

This code system http://terminology.hl7.org/CodeSystem/v2-0209 defines the following codes:

EQ EqualEqual
NE Not EqualNot Equal
LT Less thanLess than
GT Greater thanGreater than
LE Less than or equalLess than or equal
GE Greater than or equalGreater than or equal
CT ContainsContains
GN GenericGeneric


2020-05-06reviseTed KleinVocabulary WGMigrated to the UTG maintenance environment and publishing tooling.