---
type: "codesystem"
title: "Search Comparator"
codesystem: "search-comparator"
---
# Search Comparator

- **Official URL**: http://hl7.org/fhir/search-comparator
- **Version**: 6.0.0
- **Status**: active
- **Name**: SearchComparator
- **Title**: Search Comparator
- **Publisher**: HL7 (FHIR Project)
- **Description**: What Search Comparator Codes are supported in search.
- **Case Sensitive**: true
- **Content**: complete

## Concepts

| Code | Display | Definition |
| --- | --- | --- |
| eq | Equals | the value for the parameter in the resource is equal to the provided value. |
| ne | Not Equals | 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 or Equals | the value for the parameter in the resource is greater or equal to the provided value. |
| le | Less of 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. |

## CodeSystem XML



```xml
<?xml version="1.0" encoding="UTF-8"?>

<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="search-comparator"/>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="fhir"/>
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
    <valueCode value="normative"/>
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
    <valueInteger value="3"/>
  </extension>
  <url value="http://hl7.org/fhir/search-comparator"/>
  <identifier>
    <system value="urn:ietf:rfc:3986"/>
    <value value="urn:oid:2.16.840.1.113883.4.642.4.638"/>
  </identifier>
  <identifier>
    <use value="old"/>
    <system value="urn:ietf:rfc:3986"/>
    <value value="urn:oid:2.16.840.1.113883.4.642.1.623"/>
  </identifier>
  <version value="6.0.0"/>
  <name value="SearchComparator"/>
  <title value="Search Comparator"/>
  <status value="active"/>
  <experimental value="false"/>
  <date value="2021-01-05T10:01:24+11:00"/>
  <publisher value="HL7 (FHIR Project)"/>
  <contact>
    <telecom>
      <system value="url"/>
      <value value="http://hl7.org/fhir"/>
    </telecom>
    <telecom>
      <system value="email"/>
      <value value="fhir@lists.hl7.org"/>
    </telecom>
  </contact>
  <description value="What Search Comparator Codes are supported in search."/>
  <caseSensitive value="true"/>
  <valueSet value="http://hl7.org/fhir/ValueSet/search-comparator"/>
  <content value="complete"/>
  <concept>
    <code value="eq"/>
    <display value="Equals"/>
    <definition value="the value for the parameter in the resource is equal to the provided value."/>
  </concept>
  <concept>
    <code value="ne"/>
    <display value="Not Equals"/>
    <definition value="the value for the parameter in the resource is not equal to the provided value."/>
  </concept>
  <concept>
    <code value="gt"/>
    <display value="Greater Than"/>
    <definition value="the value for the parameter in the resource is greater than the provided value."/>
  </concept>
  <concept>
    <code value="lt"/>
    <display value="Less Than"/>
    <definition value="the value for the parameter in the resource is less than the provided value."/>
  </concept>
  <concept>
    <code value="ge"/>
    <display value="Greater or Equals"/>
    <definition value="the value for the parameter in the resource is greater or equal to the provided value."/>
  </concept>
  <concept>
    <code value="le"/>
    <display value="Less of Equal"/>
    <definition value="the value for the parameter in the resource is less or equal to the provided value."/>
  </concept>
  <concept>
    <code value="sa"/>
    <display value="Starts After"/>
    <definition value="the value for the parameter in the resource starts after the provided value."/>
  </concept>
  <concept>
    <code value="eb"/>
    <display value="Ends Before"/>
    <definition value="the value for the parameter in the resource ends before the provided value."/>
  </concept>
  <concept>
    <code value="ap"/>
    <display value="Approximately"/>
    <definition value="the value for the parameter in the resource is approximately the same to the provided value."/>
  </concept>
</CodeSystem>
```