This page is part of the FHIR Specification (v1.4.0: STU 3 Ballot 3). 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 R3 R2
Units to use for measured value
{ "resourceType": "StructureDefinition", "id": "elementdefinition-allowedUnits", "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-allowedUnits", "name": "Units to use for measured value", "status": "draft", "publisher": "Health Level Seven, Inc. - FHIR Core WG", "contact": [ { "telecom": [ { "system": "other", "value": "http://hl7.org/special/committees/FHIR" } ] } ], "date": "2015-02-28", "description": "Identifies the units of measure in which the element should be captured or expressed.", "fhirVersion": "1.4.0", "mapping": [ { "identity": "v2", "uri": "http://hl7.org/v2", "name": "HL7 v2" }, { "identity": "rim", "uri": "http://hl7.org/v3", "name": "RIM" } ], "kind": "datatype", "abstract": false, "contextType": "datatype", "context": [ "ElementDefinition" ], "baseType": "Extension", "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension", "derivation": "constraint", "snapshot": { "element": [ { "path": "Extension", "short": "Units to use for measured value", "definition": "Identifies the units of measure in which the element should be captured or expressed.", "comments": "Use a value set if more than one unit of measure is possible. Value sets will typically be short enough to display in a drop-down selection list.", "min": 0, "max": "1", "base": { "path": "Extension", "min": 0, "max": "*" }, "type": [ { "code": "Extension" } ], "mapping": [ { "identity": "v2", "map": "OM2.2" }, { "identity": "rim", "map": "N/A (MIF territory)" } ] }, { "path": "Extension.id", "representation": [ "xmlAttr" ], "short": "xml:id (or equivalent in JSON)", "definition": "unique id for the element within a resource (for internal references).", "min": 0, "max": "1", "base": { "path": "Element.id", "min": 0, "max": "*" }, "type": [ { "code": "id" } ], "mapping": [ { "identity": "rim", "map": "n/a" } ] }, { "path": "Extension.extension", "name": "extension", "short": "Extension", "definition": "An Extension", "min": 0, "max": "0", "base": { "path": "Element.extension", "min": 0, "max": "*" }, "type": [ { "code": "Extension" } ] }, { "path": "Extension.url", "representation": [ "xmlAttr" ], "short": "identifies the meaning of the extension", "definition": "Source of the definition for the extension code - a logical name or a URL.", "comments": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition should be version specific. This will ideally be the URI for the Resource Profile defining the extension, with the code for the extension after a #.", "min": 1, "max": "1", "base": { "path": "Extension.url", "min": 1, "max": "1" }, "type": [ { "code": "uri" } ], "fixedUri": "http://hl7.org/fhir/StructureDefinition/elementdefinition-allowedUnits", "mapping": [ { "identity": "rim", "map": "N/A" } ] }, { "path": "Extension.value[x]", "short": "Value of extension", "definition": "Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).", "min": 1, "max": "1", "base": { "path": "Extension.value[x]", "min": 0, "max": "1" }, "type": [ { "code": "CodeableConcept" }, { "code": "Reference", "profile": [ "http://hl7.org/fhir/StructureDefinition/ValueSet" ] } ], "binding": { "strength": "required", "description": "Units of measure allowed for an element", "valueSetReference": { "reference": "http://hl7.org/fhir/ValueSet/uslab-units" } }, "mapping": [ { "identity": "rim", "map": "N/A" } ] } ] }, "differential": { "element": [ { "path": "Extension", "short": "Units to use for measured value", "definition": "Identifies the units of measure in which the element should be captured or expressed.", "comments": "Use a value set if more than one unit of measure is possible. Value sets will typically be short enough to display in a drop-down selection list.", "min": 0, "max": "1", "type": [ { "code": "Extension" } ], "mapping": [ { "identity": "v2", "map": "OM2.2" }, { "identity": "rim", "map": "N/A (MIF territory)" } ] }, { "path": "Extension.extension", "name": "extension", "max": "0" }, { "path": "Extension.url", "type": [ { "code": "uri" } ], "fixedUri": "http://hl7.org/fhir/StructureDefinition/elementdefinition-allowedUnits" }, { "path": "Extension.value[x]", "min": 1, "type": [ { "code": "CodeableConcept" }, { "code": "Reference", "profile": [ "http://hl7.org/fhir/StructureDefinition/ValueSet" ] } ], "binding": { "strength": "required", "description": "Units of measure allowed for an element", "valueSetReference": { "reference": "http://hl7.org/fhir/ValueSet/uslab-units" } } } ] } }
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.