This page is part of the FHIR Specification (v4.3.0: R4B - STU). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions . Page versions: R4B R4
FHIR Infrastructure Work Group | Maturity Level: N/A | Standards Status: Informative |
Raw XML (canonical form + also see XML Format Specification)
Definition for Code SystemExpressionLanguage
<?xml version="1.0" encoding="UTF-8"?> <CodeSystem xmlns="http://hl7.org/fhir"> <id value="expression-language"/> <meta> <lastUpdated value="2022-05-28T12:47:40.239+10:00"/> </meta> <text> <status value="generated"/> <div xmlns="http://www.w3.org/1999/xhtml"> <p> This code system http://hl7.org/fhir/expression-language defines the following codes:</p> <table class="codes"> <tr> <td style="white-space:nowrap"> <b> Code</b> </td> <td> <b> Display</b> </td> <td> <b> Definition</b> </td> </tr> <tr> <td style="white-space:nowrap">text/cql <a name="expression-language-text.47cql"> </a> </td> <td> CQL</td> <td> Clinical Quality Language.</td> </tr> <tr> <td style="white-space:nowrap">text/fhirpath <a name="expression-language-text.47fhirpath"> </a> </td> <td> FHIRPath</td> <td> FHIRPath.</td> </tr> <tr> <td style="white-space:nowrap">application/x-fhir-query <a name="expression-language-application.47x-fhir-query"> </a> </td> <td> FHIR Query</td> <td> FHIR's RESTful query syntax - typically independent of base URL.</td> </tr> <tr> <td style="white-space:nowrap">text/cql-identifier <a name="expression-language-text.47cql-identifier"> </a> </td> <td> CQL Identifier</td> <td> A valid Clinical Quality Language identifier.</td> </tr> <tr> <td style="white-space:nowrap">text/cql-expression <a name="expression-language-text.47cql-expression"> </a> </td> <td> CQL Expression</td> <td> A Clinical Quality Language expression.</td> </tr> </table> </div> </text> <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="trial-use"/> </extension> <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm"> <valueInteger value="5"/> </extension> <url value="http://hl7.org/fhir/expression-language"/> <identifier> <system value="urn:ietf:rfc:3986"/> <value value="urn:oid:2.16.840.1.113883.4.642.1.106"/> </identifier> <version value="4.3.0"/> <name value="ExpressionLanguage"/> <title value="ExpressionLanguage"/> <status value="draft"/> <experimental value="false"/> <date value="2022-05-28T12:47:40+10:00"/> <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="The media type of the expression language."/> <caseSensitive value="true"/> <valueSet value="http://hl7.org/fhir/ValueSet/expression-language"/> <content value="complete"/> <concept> <code value="text/cql"/> <display value="CQL"/> <definition value="Clinical Quality Language."/> </concept> <concept> <code value="text/fhirpath"/> <display value="FHIRPath"/> <definition value="FHIRPath."/> </concept> <concept> <code value="application/x-fhir-query"/> <display value="FHIR Query"/> <definition value="FHIR's RESTful query syntax - typically independent of base URL."/> </concept> <concept> <code value="text/cql-identifier"/> <display value="CQL Identifier"/> <definition value="A valid Clinical Quality Language identifier."/> </concept> <concept> <code value="text/cql-expression"/> <display value="CQL Expression"/> <definition value="A Clinical Quality Language expression."/> </concept> </CodeSystem>
Usage note: every effort has been made to ensure that the examples are correct and useful, but they are not a normative part of the specification.