{
"description": "Enhanced quantity data type that supports an approximation indicator.",
"_filename": "CareConnect-Quantity-1.json",
"package_name": "gpc.stu3.fhir-assets",
"date": "2019-04-03",
"derivation": "constraint",
"publisher": "HL7 UK",
"fhirVersion": "3.0.1",
"name": "CareConnect-Quantity-1",
"abstract": false,
"copyright": "Copyright © 2019 HL7 UK Licensed under the Apache License, Version 2.0 (the \"License\"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an \"AS IS\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. HL7® FHIR® standard Copyright © 2011+ HL7 The HL7® FHIR® standard is used under the FHIR license. You may obtain a copy of the FHIR license at https://www.hl7.org/fhir/license.html",
"type": "Quantity",
"experimental": null,
"resourceType": "StructureDefinition",
"title": null,
"package_version": "1.1.2",
"snapshot": {
"element": [ {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"severity": "error",
"expression": "hasValue() | (children().count() > id.count())"
}, {
"key": "qty-3",
"human": "If a code for the unit is present, the system SHALL also be present",
"xpath": "not(exists(f:code)) or exists(f:system)",
"severity": "error",
"expression": "code.empty() or system.exists()"
} ],
"path": "Quantity",
"min": 0,
"definition": "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.",
"short": "A measured or measurable amount",
"mapping": [ {
"map": "n/a",
"identity": "rim"
}, {
"map": "SN (see also Range) or CQ",
"identity": "v2"
}, {
"map": "PQ, IVL, MO, CO, depending on the values",
"identity": "rim"
} ],
"max": "*",
"id": "Quantity",
"condition": [ "ele-1" ],
"comment": "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.",
"base": {
"max": "*",
"min": 0,
"path": "Element"
}
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"severity": "error",
"expression": "hasValue() | (children().count() > id.count())"
} ],
"path": "Quantity.id",
"min": 0,
"definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
"short": "xml:id (or equivalent in JSON)",
"mapping": [ {
"map": "n/a",
"identity": "rim"
} ],
"type": [ {
"code": "string"
} ],
"representation": [ "xmlAttr" ],
"max": "1",
"id": "Quantity.id",
"condition": [ "ele-1" ],
"comment": "Note that FHIR strings may not exceed 1MB in size",
"base": {
"max": "1",
"min": 0,
"path": "Element.id"
}
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"severity": "error",
"expression": "hasValue() | (children().count() > id.count())"
}, {
"key": "ext-1",
"human": "Must have either extensions or value[x], not both",
"xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])",
"severity": "error",
"expression": "extension.exists() != value.exists()"
} ],
"path": "Quantity.extension",
"min": 0,
"definition": "May be used to represent additional information that is not part of the basic definition of the element. In order 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 is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
"short": "Additional Content defined by implementations",
"mapping": [ {
"map": "n/a",
"identity": "rim"
}, {
"map": "N/A",
"identity": "rim"
} ],
"slicing": {
"rules": "open",
"description": "Extensions are always sliced by (at least) url",
"discriminator": [ {
"path": "url",
"type": "value"
} ]
},
"type": [ {
"code": "Extension"
} ],
"alias": [ "extensions", "user content" ],
"max": "*",
"id": "Quantity.extension",
"condition": [ "ele-1" ],
"comment": "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.",
"base": {
"max": "*",
"min": 0,
"path": "Element.extension"
}
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"severity": "error",
"expression": "hasValue() | (children().count() > id.count())"
}, {
"key": "ext-1",
"human": "Must have either extensions or value[x], not both",
"xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])",
"severity": "error",
"expression": "extension.exists() != value.exists()"
} ],
"path": "Quantity.extension",
"min": 0,
"definition": "Value Approximation",
"short": "Value Approximation",
"mapping": [ {
"map": "n/a",
"identity": "rim"
}, {
"map": "N/A",
"identity": "rim"
} ],
"type": [ {
"code": "Extension",
"profile": "https://fhir.hl7.org.uk/STU3/StructureDefinition/Extension-CareConnect-ValueApproximation-1"
} ],
"sliceName": "valueApproximation",
"alias": [ "extensions", "user content" ],
"max": "1",
"id": "Quantity.extension:valueApproximation",
"condition": [ "ele-1" ],
"comment": "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.",
"base": {
"max": "*",
"min": 0,
"path": "Element.extension"
}
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"severity": "error",
"expression": "hasValue() | (children().count() > id.count())"
} ],
"path": "Quantity.value",
"requirements": "Precision is handled implicitly in almost all cases of measurement.",
"min": 0,
"definition": "The value of the measured amount. The value includes an implicit precision in the presentation of the value.",
"short": "Numerical value (with implicit precision)",
"mapping": [ {
"map": "n/a",
"identity": "rim"
}, {
"map": "SN.2 / CQ - N/A",
"identity": "v2"
}, {
"map": "PQ.value, CO.value, MO.value, IVL.high or IVL.low depending on the value",
"identity": "rim"
} ],
"type": [ {
"code": "decimal"
} ],
"max": "1",
"id": "Quantity.value",
"condition": [ "ele-1" ],
"comment": "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).",
"base": {
"max": "1",
"min": 0,
"path": "Quantity.value"
},
"isSummary": true
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"severity": "error",
"expression": "hasValue() | (children().count() > id.count())"
} ],
"path": "Quantity.comparator",
"requirements": "Need a framework for handling measures where the value is <5ug/L or >400mg/L due to the limitations of measuring methodology.",
"min": 0,
"definition": "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.",
"isModifier": true,
"short": "< | <= | >= | > - how to understand the value",
"mapping": [ {
"map": "n/a",
"identity": "rim"
}, {
"map": "SN.1 / CQ.1",
"identity": "v2"
}, {
"map": "IVL properties",
"identity": "rim"
} ],
"type": [ {
"code": "code"
} ],
"meaningWhenMissing": "If there is no comparator, then there is no modification of the value",
"binding": {
"strength": "required",
"extension": [ {
"url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
"valueString": "QuantityComparator"
} ],
"description": "How the Quantity should be understood and represented.",
"valueSetReference": {
"reference": "http://hl7.org/fhir/ValueSet/quantity-comparator"
}
},
"max": "1",
"id": "Quantity.comparator",
"condition": [ "ele-1" ],
"comment": "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.",
"base": {
"max": "1",
"min": 0,
"path": "Quantity.comparator"
},
"isSummary": true
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"severity": "error",
"expression": "hasValue() | (children().count() > id.count())"
} ],
"path": "Quantity.unit",
"requirements": "There are many representations for units of measure and in many contexts, particular representations are fixed and required. I.e. mcg for micrograms.",
"min": 0,
"definition": "A human-readable form of the unit.",
"short": "Unit representation",
"mapping": [ {
"map": "n/a",
"identity": "rim"
}, {
"map": "(see OBX.6 etc.) / CQ.2",
"identity": "v2"
}, {
"map": "PQ.unit",
"identity": "rim"
} ],
"type": [ {
"code": "string"
} ],
"extension": [ {
"url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable",
"valueBoolean": true
} ],
"max": "1",
"id": "Quantity.unit",
"condition": [ "ele-1" ],
"comment": "Note that FHIR strings may not exceed 1MB in size",
"base": {
"max": "1",
"min": 0,
"path": "Quantity.unit"
},
"isSummary": true
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"severity": "error",
"expression": "hasValue() | (children().count() > id.count())"
} ],
"path": "Quantity.system",
"requirements": "Need to know the system that defines the coded form of the unit.",
"min": 0,
"definition": "The identification of the system that provides the coded form of the unit.",
"short": "System that defines coded unit form",
"mapping": [ {
"map": "n/a",
"identity": "rim"
}, {
"map": "(see OBX.6 etc.) / CQ.2",
"identity": "v2"
}, {
"map": "CO.codeSystem, PQ.translation.codeSystem",
"identity": "rim"
} ],
"type": [ {
"code": "uri"
} ],
"max": "1",
"id": "Quantity.system",
"condition": [ "ele-1", "qty-3" ],
"comment": "see http://en.wikipedia.org/wiki/Uniform_resource_identifier",
"base": {
"max": "1",
"min": 0,
"path": "Quantity.system"
},
"isSummary": true
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"severity": "error",
"expression": "hasValue() | (children().count() > id.count())"
} ],
"path": "Quantity.code",
"requirements": "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": 0,
"definition": "A computer processable form of the unit in some unit representation system.",
"short": "Coded form of the unit",
"mapping": [ {
"map": "n/a",
"identity": "rim"
}, {
"map": "(see OBX.6 etc.) / CQ.2",
"identity": "v2"
}, {
"map": "PQ.code, MO.currency, PQ.translation.code",
"identity": "rim"
} ],
"type": [ {
"code": "code"
} ],
"max": "1",
"id": "Quantity.code",
"condition": [ "ele-1" ],
"comment": "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.",
"base": {
"max": "1",
"min": 0,
"path": "Quantity.code"
},
"isSummary": true
} ]
},
"status": "draft",
"id": "bcc494a4-1434-48f1-9fad-fa4f3c6c12e9",
"kind": "complex-type",
"url": "https://fhir.hl7.org.uk/STU3/StructureDefinition/CareConnect-Quantity-1",
"version": "1.0.0",
"differential": {
"element": [ {
"id": "Quantity.extension",
"path": "Quantity.extension",
"slicing": {
"rules": "open",
"discriminator": [ {
"path": "url",
"type": "value"
} ]
}
}, {
"id": "Quantity.extension:valueApproximation",
"max": "1",
"path": "Quantity.extension",
"type": [ {
"code": "Extension",
"profile": "https://fhir.hl7.org.uk/STU3/StructureDefinition/Extension-CareConnect-ValueApproximation-1"
} ],
"short": "Value Approximation",
"sliceName": "valueApproximation",
"definition": "Value Approximation"
} ]
},
"contact": [ {
"name": "INTEROPen",
"telecom": [ {
"use": "work",
"value": "admin@interopen.org",
"system": "email"
} ]
} ],
"baseDefinition": "http://hl7.org/fhir/StructureDefinition/Quantity"
}