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| Modeling and Methodology Work Group | Maturity Level : N/A | Standards Status : Informative |
Raw XML ( canonical form + also see XML Format Specification )
StructureDefinition for Count
<?xml version="1.0" encoding="UTF-8"?> <StructureDefinition xmlns="http://hl7.org/fhir"> <id value="Count"/> <text> <status value="generated"/> <div xmlns="http://www.w3.org/1999/xhtml">vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px<table border="0" cellpadding="0" cellspacing="0" style="border: 0px #F0F0F0 solid; font-size: 11px; font-family: verdana; vertical-align: top;"> <tr style="border: 1px #F0F0F0 solid; font-size: 11px; font-family: verdana; vertical-align: top"> <th class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"> <a href="formats.html#table" title="The logical name of the element">Name</a> </th>vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px<th class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"> <a href="formats.html#table" title="Information about the use of the element">Flags</a> </th>vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px<th class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"> <a href="formats.html#table" title="Minimum and Maximum # of times the the element can appear in the instance">Card.</a> </th> <th class="hierarchy" style="width: 100px"> <a href="formats.html#table" title="Reference to the type of the element">Type</a> </th>vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px<th class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"> <a href="formats.html#table" title="Additional information about the element">Description & Constraints</a> <span style="float: right"> <a href="formats.html#table" title="Legend for this format"> <img alt="doco" src="help16.png" style="background-color: inherit"/> </a> </span> </th> </tr>vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data:image/png;base64,iVBORw0KGg oAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgCs PVYVAgIJrA/sAAAAASUVORK5CYII=) data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB3 RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAwN dCABMPwMo2ctnoQAAAABJRU5ErkJggg== data:image/png;base64,R0lGODlhEAAQAPZ/APrkusOiYvvfqbiXWaV2G+jGhdq1b8GgYf3v1frw3vTUlsWkZNewbcSjY/DQka d4Hb6dXv3u0f3v1ObEgfPTlerJiP3w1v79+e7OkPrfrfnjuNOtZPrpydaxa+/YrvvdpP779ZxvFPvnwKKBQaFyF/369M2vdaqHRPz 58/HNh/vowufFhfroxO3OkPrluv779tK0e6JzGProwvrow9m4eOnIifPTlPDPkP78+Naxaf3v0/zowfXRi+bFhLWUVv379/rnwPvs zv3rye3LiPvnv+3MjPDasKiIS/789/3x2f747eXDg+7Mifvu0tu7f+/QkfDTnPXWmPrjsvrjtPbPgrqZW+/QlPz48K2EMv36866OU Pvowat8Ivvgq/Pbrvzgq/PguvrgrqN0Gda2evfYm9+7d/rpw9q6e/LSku/Rl/XVl/LSlfrkt+zVqe7Wqv3x1/bNffbOf59wFdS6if 3u0vrqyP3owPvepfXQivDQkO/PkKh9K7STVf779P///wD/ACH5BAEKAH8ALAAAAAAQABAAAAemgH+CgxeFF4OIhBdKGwFChYl/hYw bdkoBPnaQkosbG3d3VEpSUlonUoY1Gzo6QkI8SrGxWBOFG4uySgY5ZWR3PFy2hnaWZXC/PHcPwkpJk1ShoHcxhQEXSUmtFy6+0iSF VResrjoTPDzdcoU+F65CduVU6KAhhQa3F8Tx8nchBoYuqoTLZoAKFRIhqGwqJAULFx0GYpBQeChRIR4TJm6KJMhQRUSBAAA7 Count : A measured amount (or an amount that can potentially be measured). Note that measured amounts include amounts that are not precisely quantified, including amounts involving arbitrary units and floating currencies.<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"> <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data:image/png;bas e64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAI0lEQVR42u3QIQEAAAACIL/6/4MvTAQOkLYBAAB4kA AAANwMad9AqkRjgNAAAAAASUVORK5CYII=)"> <img alt="." class="hierarchy" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpw YAAAAB3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI1 2P4//8/AxMDAwNdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/> <img alt="." class="hierarchy" src="data:image/png;base64,R0lGODlhEAAQAPZ/APrkusOiYvvfqbiXWaV2G+jGhdq1b8GgYf3v1frw3vTUlsWkZNewbcS jY/DQkad4Hb6dXv3u0f3v1ObEgfPTlerJiP3w1v79+e7OkPrfrfnjuNOtZPrpydaxa+/YrvvdpP779ZxvFPvnwKKBQaFyF /369M2vdaqHRPz58/HNh/vowufFhfroxO3OkPrluv779tK0e6JzGProwvrow9m4eOnIifPTlPDPkP78+Naxaf3v0/zowfX Ri+bFhLWUVv379/rnwPvszv3rye3LiPvnv+3MjPDasKiIS/789/3x2f747eXDg+7Mifvu0tu7f+/QkfDTnPXWmPrjsvrjt PbPgrqZW+/QlPz48K2EMv36866OUPvowat8Ivvgq/Pbrvzgq/PguvrgrqN0Gda2evfYm9+7d/rpw9q6e/LSku/Rl/XVl/L Slfrkt+zVqe7Wqv3x1/bNffbOf59wFdS6if3u0vrqyP3owPvepfXQivDQkO/PkKh9K7STVf779P///wD/ACH5BAEKAH8AL AAAAAAQABAAAAemgH+CgxeFF4OIhBdKGwFChYl/hYwbdkoBPnaQkosbG3d3VEpSUlonUoY1Gzo6QkI8SrGxWBOFG4uySgY 5ZWR3PFy2hnaWZXC/PHcPwkpJk1ShoHcxhQEXSUmtFy6+0iSFVResrjoTPDzdcoU+F65CduVU6KAhhQa3F8Tx8nchBoYuq oTLZoAKFRIhqGwqJAULFx0GYpBQeChRIR4TJm6KJMhQRUSBAAA7" style="background-color: white; background-color: inherit" title="Data Type"/> <a href="datatypes-definitions.html#Count" title="Count : A measured amount (or an amount that can potentially be measured). Note that measured amounts include amounts that are not precisely quantified, including amounts involving arbitrary units and floating currencies.">Count</a> </td>vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px<td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"> <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null" title="This element is included in summaries">Σ</a>padding-left: 3px; padding-right: 3px; border: 1px grey solid; font-weight: bold; color: black; background-color: #fff5e6<a href="versions.html#std-process" style="padding-left: 3px; padding-right: 3px; border: 1px grey solid; font-weight: bold; color: black; background-color: #fff5e6" title="Standards Status = Trial Use">TU</a> </td>vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px<td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"> <a href="datatypes.html#Quantity">Quantity</a> </td>vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4pxA measured or measurable amount<td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">A measured or measurable amount <br/> <span style="font-style: italic" title="cnt-3">+ Rule: There SHALL be a code with a value of "1" if there is a value. If system is present, it SHALL be UCUM. If present, the value SHALL be a whole number.</span> <br/>+ Rule: There SHALL be a code with a value of "1" if there is a value. If system is present, it SHALL be UCUM. If present, the value SHALL be a whole number.<br/> Elements defined in Ancestors:Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces., May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension., The value of the measured amount. The value includes an implicit precision in the presentation of the value., How the value should be understood and represented - whether the actual value is greater or less than the stated value due to measurement issues; e.g. if the comparator is "<" , then the real value is < stated value.,<a href="types.html#Element" title="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.">id</a> , <a href="types.html#Element" title="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.">extension</a> , <a href="datatypes.html#Quantity" title="The value of the measured amount. The value includes an implicit precision in the presentation of the value.">value</a> , <a href="datatypes.html#Quantity" title="How the value should be understood and represented - whether the actual value is greater or less than the stated value due to measurement issues; e.g. if the comparator is "<" , then the real value is < stated value.">comparator</a> , <a href="datatypes.html#Quantity" title="A human-readable form of the unit.">unit</a> , <a href="datatypes.html#Quantity" title="The identification of the system that provides the coded form of the unit.">system</a> , <a href="datatypes.html#Quantity" title="A computer processable form of the unit in some unit representation system.">code</a> </td> </tr> <tr> <td class="hierarchy" colspan="5"> <br/> <a href="formats.html#table" title="Legend for this format"> <img alt="doco" src="help16.png" style="background-color: inherit"/> Documentation for this format </a> </td> </tr> </table> </div> </text> <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status"> <valueCode value="trial-use"/> </extension> <url value="http://hl7.org/fhir/StructureDefinition/Count"/><version value="5.0.0-ballot"/> <name value="Count"/> <status value="draft"/> <experimental value="false"/><date value="2022-09-10T04:52:37+10:00"/> <publisher value="HL7 FHIR Standard"/> <contact> <telecom> <system value="url"/> <value value="http://hl7.org/fhir"/> </telecom> </contact>Base StructureDefinition for Count Type: A measured amount (or an amount that can potentially be measured). Note that measured amounts include amounts that are not precisely quantified, including amounts involving arbitrary units and floating currencies. Need to able to capture all sorts of measured values, even if the measured value are not precisely quantified. Values include exact measures such as 3.51g, customary units such as 3 tablets, and currencies such as $100.32USD.<description value="Count Type: A measured amount (or an amount that can potentially be measured). Note that measured amounts include amounts that are not precisely quantified, including amounts involving arbitrary units and floating currencies."/> <purpose value="Need to able to capture all sorts of measured values, even if the measured value are not precisely quantified. Values include exact measures such as 3.51g, customary units such as 3 tablets, and currencies such as $100.32USD."/> <fhirVersion value="5.0.0-ballot"/> <mapping> <identity value="v2"/> <uri value="http://hl7.org/v2"/> <name value="HL7 v2 Mapping"/> </mapping> <mapping> <identity value="rim"/> <uri value="http://hl7.org/v3"/> <name value="RIM Mapping"/> </mapping> <kind value="complex-type"/> <abstract value="false"/> <type value="Count"/> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Quantity"/> <derivation value="specialization"/> <snapshot> <element id="Count"><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status"> <valueCode value="trial-use"/></extension> <path value="Count"/> <short value="A measured or measurable amount"/> <definition value="A measured amount (or an amount that can potentially be measured). Note that measured amounts include amounts that are not precisely quantified, including amounts involving arbitrary units and floating currencies."/>The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator.<comment value="The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator."/> <min value="0"/> <max value="*"/> <base> <path value="Count"/> <min value="0"/> <max value="*"/> </base> <constraint> <key value="cnt-3"/> <severity value="error"/>There SHALL be a code with a value of "1" if there is a value. If system is present, it SHALL be UCUM. If present, the value SHALL be a whole number.<human value="There SHALL be a code with a value of "1" if there is a value. If system is present, it SHALL be UCUM. If present, the value SHALL be a whole number."/> <expression value="(code.exists() or value.empty()) and (system.empty() or system = %ucum) and (code.empty()or code = '1') and (value.empty() or value.hasValue().not() or value.toString().contains('.').not()) (f:code or not(f:value)) and (not(exists(f:system)) or (f:system/@value='http://unitsofmeasure.org' and f:code/@value='1')) and not(contains(f:value/@value, '.'))or code = '1') and (value.empty() or value.hasValue().not() or value.toString().contains('.') .not())"/> <xpath value="(f:code or not(f:value)) and (not(exists(f:system)) or (f:system/@value='http://unitsofmeasur e.org' and f:code/@value='1')) and not(contains(f:value/@value, '.'))"/> <source value="http://hl7.org/fhir/StructureDefinition/Count"/> </constraint> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <xpath value="@value|f:*|h:div"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <constraint> <key value="qty-3"/> <severity value="error"/> <human value="If a code for the unit is present, the system SHALL also be present"/> <expression value="code.empty() or system.exists()"/> <xpath value="not(exists(f:code)) or exists(f:system)"/> <source value="http://hl7.org/fhir/StructureDefinition/Quantity"/> </constraint> <isModifier value="false"/> <mapping> <identity value="v2"/> <map value="SN (see also Range) or CQ"/> </mapping> <mapping> <identity value="rim"/> <map value="PQ, IVL<PQ>, MO, CO, depending on the values"/> </mapping> </element> <element id="Count.id"> <path value="Count.id"/> <representation value="xmlAttr"/> <short value="Unique id for inter-element referencing"/>Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.<definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/> <min value="0"/> <max value="1"/> <base> <path value="Element.id"/> <min value="0"/> <max value="1"/> </base> <!-- Note: special primitive values have a FHIRPath system type. e.g. this is compiler magic (j) --> <type> <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type"> <valueUrl value="id"/> </extension> <code value="http://hl7.org/fhirpath/System.String"/> </type> <isModifier value="false"/> <isSummary value="false"/> <mapping> <identity value="rim"/> <map value="n/a"/> </mapping> </element> <element id="Count.extension"> <path value="Count.extension"/> <slicing> <discriminator> <type value="value"/> <path value="url"/> </discriminator> <description value="Extensions are always sliced by (at least) url"/> <rules value="open"/> </slicing> <short value="Additional content defined by implementations"/> <definition value="May be used to represent additional information that is not part of the basic definitionof the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/> <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/> <alias value="extensions"/> <alias value="user content"/> <min value="0"/> <max value="*"/> <base> <path value="Element.extension"/> <min value="0"/> <max value="*"/> </base> <type> <code value="Extension"/> </type> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <xpath value="@value|f:*|h:div"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <constraint> <key value="ext-1"/> <severity value="error"/> <human value="Must have either extensions or value[x], not both"/> <expression value="extension.exists() != value.exists()"/> <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")])"/> <source value="http://hl7.org/fhir/StructureDefinition/Extension"/> </constraint> <isModifier value="false"/> <isSummary value="false"/> <mapping> <identity value="rim"/> <map value="n/a"/> </mapping> </element> <element id="Count.value"> <path value="Count.value"/> <short value="Numerical value (with implicit precision)"/>The value of the measured amount. The value includes an implicit precision in the presentation of the value. The implicit precision in the value should always be honored. Monetary values have their own rules for handling precision (refer to standard accounting text books).<definition value="The value of the measured amount. The value includes an implicit precision in the presentation of the value."/> <comment value="The implicit precision in the value should always be honored. Monetary values have their own rules for handling precision (refer to standard accounting text books)."/> <requirements value="Precision is handled implicitly in almost all cases of measurement."/> <min value="0"/> <max value="1"/> <base> <path value="Quantity.value"/> <min value="0"/> <max value="1"/> </base> <type> <code value="decimal"/> </type> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <xpath value="@value|f:*|h:div"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <isModifier value="false"/> <isSummary value="true"/> <mapping> <identity value="v2"/> <map value="SN.2 / CQ - N/A"/> </mapping> <mapping> <identity value="rim"/> <map value="PQ.value, CO.value, MO.value, IVL.high or IVL.low depending on the value"/> </mapping> </element> <element id="Count.comparator"> <path value="Count.comparator"/>How the value should be understood and represented - whether the actual value is greater or less than the stated value due to measurement issues; e.g. if the comparator is "<" , then the real value is < stated value. Need a framework for handling measures where the value is <5ug/L or >400mg/L due to the limitations of measuring methodology.<short value="< | <= | >= | > | ad - how to understand the value"/> <definition value="How the value should be understood and represented - whether the actual value is greater or less than the stated value due to measurement issues; e.g. if the comparator is "<" , then the real value is < stated value."/> <requirements value="Need a framework for handling measures where the value is <5ug/L or >400mg/L due to the limitations of measuring methodology."/> <min value="0"/> <max value="1"/> <base> <path value="Quantity.comparator"/> <min value="0"/> <max value="1"/> </base> <type> <code value="code"/> </type> <meaningWhenMissing value="If there is no comparator, then there is no modification of the value"/> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <xpath value="@value|f:*|h:div"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <isModifier value="true"/>This is labeled as "Is Modifier" because the comparator modifies the interpretation of the value significantly. If there is no comparator, then there is no modification of the value<isModifierReason value="This is labeled as "Is Modifier" because the comparator modifies the interpretation of the value significantly. If there is no comparator, then there is no modification of the value"/> <isSummary value="true"/> <binding> <extension url="http://hl7.org/fhir/build/StructureDefinition/binding-definition"> <valueString value="How the Quantity should be understood and represented."/> </extension> <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName"> <valueString value="QuantityComparator"/> </extension> <strength value="required"/><valueSet value="http://hl7.org/fhir/ValueSet/quantity-comparator|5.0.0-ballot"/> </binding> <mapping> <identity value="v2"/> <map value="SN.1 / CQ.1"/> </mapping> <mapping> <identity value="rim"/> <map value="IVL properties"/> </mapping> </element> <element id="Count.unit"><extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable"> <valueBoolean value="true"/></extension> <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable"> <valueBoolean value="true"/></extension> <path value="Count.unit"/> <short value="Unit representation"/> <definition value="A human-readable form of the unit."/>There are many representations for units of measure and in many contexts, particular representations are fixed and required. I.e. mcg for micrograms.<requirements value="There are many representations for units of measure and in many contexts, particular representations are fixed and required. I.e. mcg for micrograms."/> <min value="0"/> <max value="1"/> <base> <path value="Quantity.unit"/> <min value="0"/> <max value="1"/> </base> <type> <code value="string"/> </type> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <xpath value="@value|f:*|h:div"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <isModifier value="false"/> <isSummary value="true"/> <mapping> <identity value="v2"/> <map value="(see OBX.6 etc.) / CQ.2"/> </mapping> <mapping> <identity value="rim"/> <map value="PQ.unit"/> </mapping> </element> <element id="Count.system"> <path value="Count.system"/> <short value="System that defines coded unit form"/> <definition value="The identification of the system that provides the coded form of the unit."/> <requirements value="Need to know the system that defines the coded form of the unit."/> <min value="0"/> <max value="1"/> <base> <path value="Quantity.system"/> <min value="0"/> <max value="1"/> </base> <type> <code value="uri"/> </type> <condition value="qty-3"/> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <xpath value="@value|f:*|h:div"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <isModifier value="false"/> <isSummary value="true"/> <mapping> <identity value="v2"/> <map value="(see OBX.6 etc.) / CQ.2"/> </mapping> <mapping> <identity value="rim"/> <map value="CO.codeSystem, PQ.translation.codeSystem"/> </mapping> </element> <element id="Count.code"><extension url="http://hl7.org/fhir/build/StructureDefinition/no-binding"> <valueBoolean value="true"/></extension> <path value="Count.code"/> <short value="Coded form of the unit"/> <definition value="A computer processable form of the unit in some unit representation system."/>The preferred system is UCUM, but SNOMED CT can also be used (for customary units) or ISO 4217 for currency. The context of use may additionally require a code from a particular system. Need a computable form of the unit that is fixed across all forms. UCUM provides this for quantities, but SNOMED CT provides many units of interest.<comment value="The preferred system is UCUM, but SNOMED CT can also be used (for customary units) or ISO 4217 for currency. The context of use may additionally require a code from a particular system."/> <requirements value="Need a computable form of the unit that is fixed across all forms. UCUM provides this for quantities, but SNOMED CT provides many units of interest."/> <min value="0"/> <max value="1"/> <base> <path value="Quantity.code"/> <min value="0"/> <max value="1"/> </base> <type> <code value="code"/> </type> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <xpath value="@value|f:*|h:div"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <isModifier value="false"/> <isSummary value="true"/> <mapping> <identity value="v2"/> <map value="(see OBX.6 etc.) / CQ.2"/> </mapping> <mapping> <identity value="rim"/> <map value="PQ.code, MO.currency, PQ.translation.code"/> </mapping> </element> </snapshot> <differential> <element id="Count"><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status"> <valueCode value="trial-use"/></extension> <path value="Count"/> <short value="A measured or measurable amount"/> <definition value="A measured amount (or an amount that can potentially be measured). Note that measured amounts include amounts that are not precisely quantified, including amounts involving arbitrary units and floating currencies."/>The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator.<comment value="The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator."/> <min value="0"/> <max value="*"/> <constraint> <key value="cnt-3"/> <severity value="error"/>There SHALL be a code with a value of "1" if there is a value. If system is present, it SHALL be UCUM. If present, the value SHALL be a whole number.<human value="There SHALL be a code with a value of "1" if there is a value. If system is present, it SHALL be UCUM. If present, the value SHALL be a whole number."/> <expression value="(code.exists() or value.empty()) and (system.empty() or system = %ucum) and (code.empty()or code = '1') and (value.empty() or value.hasValue().not() or value.toString().contains('.').not()) (f:code or not(f:value)) and (not(exists(f:system)) or (f:system/@value='http://unitsofmeasure.org' and f:code/@value='1')) and not(contains(f:value/@value, '.'))or code = '1') and (value.empty() or value.hasValue().not() or value.toString().contains('.') .not())"/> <xpath value="(f:code or not(f:value)) and (not(exists(f:system)) or (f:system/@value='http://unitsofmeasur e.org' and f:code/@value='1')) and not(contains(f:value/@value, '.'))"/> <source value="http://hl7.org/fhir/StructureDefinition/Count"/> </constraint> <mapping> <identity value="v2"/> <map value="SN (see also Range) or CQ"/> </mapping> <mapping> <identity value="rim"/> <map value="PQ, IVL<PQ>, MO, CO, depending on the values"/> </mapping> </element> </differential> </ StructureDefinition >
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.
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hl7.fhir.r4b.core#4.3.0
R5
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2022
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