This page is part of the Situational Awareness for Novel Epidemic Response (v1.0.0: STU 1) based on FHIR R4. This is the current published version in its permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions
JSON representation of the MeasureCriteria data type profile.
{
"resourceType" : "StructureDefinition",
"id" : "MeasureCriteria",
"text" : {
"status" : "extensions",
"div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><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 style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a href=\"http://hl7.org/fhir/R4/formats.html#table\" title=\"The logical name of the element\">Name</a></th><th style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a href=\"http://hl7.org/fhir/R4/formats.html#table\" title=\"Information about the use of the element\">Flags</a></th><th style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a href=\"http://hl7.org/fhir/R4/formats.html#table\" title=\"Minimum and Maximum # of times the the element can appear in the instance\">Card.</a></th><th style=\"width: 100px\" class=\"hierarchy\"><a href=\"http://hl7.org/fhir/R4/formats.html#table\" title=\"Reference to the type of the element\">Type</a></th><th style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a href=\"http://hl7.org/fhir/R4/formats.html#table\" title=\"Additional information about the element\">Description & Constraints</a><span style=\"float: right\"><a href=\"http://hl7.org/fhir/R4/formats.html#table\" title=\"Legend for this format\"><img src=\"http://hl7.org/fhir/R4/help16.png\" alt=\"doco\" style=\"background-color: inherit\"/></a></span></th></tr><tr style=\"border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white\"><td 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(tbl_bck1.png)\" class=\"hierarchy\"><img src=\"tbl_spacer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"icon_element.gif\" alt=\".\" style=\"background-color: white; background-color: inherit\" title=\"Element\" class=\"hierarchy\"/> <a href=\"StructureDefinition-MeasureCriteria-definitions.html#Expression\">Expression</a><a name=\"Expression\"> </a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"opacity: 0.5\">0</span><span style=\"opacity: 0.5\">..</span><span style=\"opacity: 0.5\">*</span></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a href=\"http://hl7.org/fhir/R4/datatypes.html#Expression\">Expression</a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"opacity: 0.5\">An expression that can be used to generate a value</span></td></tr>\r\n<tr style=\"border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7\"><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck14.png)\" class=\"hierarchy\"><img src=\"tbl_spacer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vjoin.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"icon_slice_item.png\" alt=\".\" style=\"background-color: #F7F7F7; background-color: inherit\" title=\"Slice Item\" class=\"hierarchy\"/> <a href=\"StructureDefinition-MeasureCriteria-definitions.html#Expression.extension:alternateCriteria\" title=\"Extension URL = http://hl7.org/fhir/uv/saner/StructureDefinition/MeasureAlternateCriteria\">MeasureAlternateCriteria</a><a name=\"Expression.extension\"> </a></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">0..1</td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a href=\"StructureDefinition-MeasureCriteria.html\" title=\"Expression\">MeasureCriteria</a></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">Other expressions for computing the criterion<br/><span style=\"font-weight:bold\">URL: </span><a href=\"http://hl7.org/fhir/R4/StructureDefinition-MeasureAlternateCriteria.html\">http://hl7.org/fhir/uv/saner/StructureDefinition/MeasureAlternateCriteria</a></td></tr>\r\n<tr style=\"border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white\"><td 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(tbl_bck10.png)\" class=\"hierarchy\"><img src=\"tbl_spacer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vjoin.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"icon_element.gif\" alt=\".\" style=\"background-color: white; background-color: inherit\" title=\"Element\" class=\"hierarchy\"/> <a href=\"StructureDefinition-MeasureCriteria-definitions.html#Expression.description\">description</a><a name=\"Expression.description\"> </a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"padding-left: 3px; padding-right: 3px; color: white; background-color: red\" title=\"This element must be supported\">S</span></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">1..<span style=\"opacity: 0.5\">1</span></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a style=\"opacity: 0.5\" href=\"http://hl7.org/fhir/R4/datatypes.html#string\">string</a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">Describe what the criterion does to a human (non-engineer)</td></tr>\r\n<tr style=\"border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7\"><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck10.png)\" class=\"hierarchy\"><img src=\"tbl_spacer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vjoin.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"icon_element.gif\" alt=\".\" style=\"background-color: #F7F7F7; background-color: inherit\" title=\"Element\" class=\"hierarchy\"/> <a href=\"StructureDefinition-MeasureCriteria-definitions.html#Expression.name\">name</a><a name=\"Expression.name\"> </a></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"padding-left: 3px; padding-right: 3px; color: white; background-color: red\" title=\"This element must be supported\">S</span></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"opacity: 0.5\">0</span><span style=\"opacity: 0.5\">..</span><span style=\"opacity: 0.5\">1</span></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a style=\"opacity: 0.5\" href=\"http://hl7.org/fhir/R4/datatypes.html#id\">id</a></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">name should align with code.</td></tr>\r\n<tr style=\"border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white\"><td 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(tbl_bck10.png)\" class=\"hierarchy\"><img src=\"tbl_spacer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vjoin.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"icon_element.gif\" alt=\".\" style=\"background-color: white; background-color: inherit\" title=\"Element\" class=\"hierarchy\"/> <a href=\"StructureDefinition-MeasureCriteria-definitions.html#Expression.language\">language</a><a name=\"Expression.language\"> </a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"padding-left: 3px; padding-right: 3px; color: white; background-color: red\" title=\"This element must be supported\">S</span></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"opacity: 0.5\">1</span><span style=\"opacity: 0.5\">..</span><span style=\"opacity: 0.5\">1</span></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a style=\"opacity: 0.5\" href=\"http://hl7.org/fhir/R4/datatypes.html#code\">code</a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">Provide the language for the criterion</td></tr>\r\n<tr style=\"border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7\"><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck00.png)\" class=\"hierarchy\"><img src=\"tbl_spacer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vjoin_end.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"icon_element.gif\" alt=\".\" style=\"background-color: #F7F7F7; background-color: inherit\" title=\"Element\" class=\"hierarchy\"/> <a href=\"StructureDefinition-MeasureCriteria-definitions.html#Expression.expression\">expression</a><a name=\"Expression.expression\"> </a></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"padding-left: 3px; padding-right: 3px; color: white; background-color: red\" title=\"This element must be supported\">S</span></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">1..<span style=\"opacity: 0.5\">1</span></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a style=\"opacity: 0.5\" href=\"http://hl7.org/fhir/R4/datatypes.html#string\">string</a></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">A measure must describe how to automate the computation in an expression that can be evaluated in the specified language</td></tr>\r\n<tr><td colspan=\"5\" class=\"hierarchy\"><br/><a href=\"http://hl7.org/fhir/R4/formats.html#table\" title=\"Legend for this format\"><img src=\"http://hl7.org/fhir/R4/help16.png\" alt=\"doco\" style=\"background-color: inherit\"/> Documentation for this format</a></td></tr></table></div>"
},
"url" : "http://hl7.org/fhir/uv/saner/StructureDefinition/MeasureCriteria",
"version" : "1.0.0",
"name" : "MeasureCriteria",
"status" : "draft",
"experimental" : true,
"date" : "2021-09-07T19:08:29+00:00",
"publisher" : "HL7 International Public Health Workgroup",
"contact" : [
{
"telecom" : [
{
"system" : "url",
"value" : "http://hl7.org/Special/committees/pher"
}
]
},
{
"telecom" : [
{
"system" : "email",
"value" : "pher@lists.hl7.org"
}
]
},
{
"name" : "Keith W. Boone",
"telecom" : [
{
"system" : "email",
"value" : "mailto:kboone@ainq.com"
}
]
}
],
"description" : "Constraints on documentation for the evaluation of a Measure",
"jurisdiction" : [
{
"coding" : [
{
"system" : "http://unstats.un.org/unsd/methods/m49/m49.htm",
"code" : "001"
}
]
}
],
"fhirVersion" : "4.0.1",
"mapping" : [
{
"identity" : "rim",
"uri" : "http://hl7.org/v3",
"name" : "RIM Mapping"
}
],
"kind" : "complex-type",
"abstract" : false,
"type" : "Expression",
"baseDefinition" : "http://hl7.org/fhir/StructureDefinition/Expression",
"derivation" : "constraint",
"snapshot" : {
"element" : [
{
"id" : "Expression",
"path" : "Expression",
"short" : "An expression that can be used to generate a value",
"definition" : "A expression that is evaluated in a specified context and returns a value. The context of use of the expression must specify the context in which the expression is evaluated, and how the result of the expression is used.",
"min" : 0,
"max" : "*",
"base" : {
"path" : "Expression",
"min" : 0,
"max" : "*"
},
"condition" : [
"ele-1"
],
"constraint" : [
{
"key" : "ele-1",
"severity" : "error",
"human" : "All FHIR elements must have a @value or children",
"expression" : "hasValue() or (children().count() > id.count())",
"xpath" : "@value|f:*|h:div",
"source" : "http://hl7.org/fhir/StructureDefinition/Element"
},
{
"key" : "exp-1",
"severity" : "error",
"human" : "An expression or a reference must be provided",
"expression" : "expression.exists() or reference.exists()",
"xpath" : "exists(f:expression) or exists(f:reference)",
"source" : "http://hl7.org/fhir/StructureDefinition/Expression"
}
],
"isModifier" : false,
"mapping" : [
{
"identity" : "rim",
"map" : "n/a"
}
]
},
{
"id" : "Expression.id",
"path" : "Expression.id",
"representation" : [
"xmlAttr"
],
"short" : "Unique id for inter-element referencing",
"definition" : "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
"min" : 0,
"max" : "1",
"base" : {
"path" : "Element.id",
"min" : 0,
"max" : "1"
},
"type" : [
{
"extension" : [
{
"url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
"valueUrl" : "string"
}
],
"code" : "http://hl7.org/fhirpath/System.String"
}
],
"isModifier" : false,
"isSummary" : false,
"mapping" : [
{
"identity" : "rim",
"map" : "n/a"
}
]
},
{
"id" : "Expression.extension",
"path" : "Expression.extension",
"slicing" : {
"discriminator" : [
{
"type" : "value",
"path" : "url"
}
],
"description" : "Extensions are always sliced by (at least) url",
"rules" : "open"
},
"short" : "Additional content defined by implementations",
"definition" : "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.",
"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.",
"alias" : [
"extensions",
"user content"
],
"min" : 0,
"max" : "*",
"base" : {
"path" : "Element.extension",
"min" : 0,
"max" : "*"
},
"type" : [
{
"code" : "Extension"
}
],
"constraint" : [
{
"key" : "ele-1",
"severity" : "error",
"human" : "All FHIR elements must have a @value or children",
"expression" : "hasValue() or (children().count() > id.count())",
"xpath" : "@value|f:*|h:div",
"source" : "http://hl7.org/fhir/StructureDefinition/Element"
},
{
"key" : "ext-1",
"severity" : "error",
"human" : "Must have either extensions or value[x], not both",
"expression" : "extension.exists() != value.exists()",
"xpath" : "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
"source" : "http://hl7.org/fhir/StructureDefinition/Extension"
}
],
"isModifier" : false,
"isSummary" : false,
"mapping" : [
{
"identity" : "rim",
"map" : "n/a"
}
]
},
{
"id" : "Expression.extension:alternateCriteria",
"path" : "Expression.extension",
"sliceName" : "alternateCriteria",
"short" : "Other expressions for computing the criterion",
"definition" : "Provides Alternate criteria for performing a measure, (e.g., CQL, Drools, et cetera)",
"min" : 0,
"max" : "1",
"base" : {
"path" : "Element.extension",
"min" : 0,
"max" : "*"
},
"type" : [
{
"code" : "Extension",
"profile" : [
"http://hl7.org/fhir/uv/saner/StructureDefinition/MeasureAlternateCriteria"
]
}
],
"constraint" : [
{
"key" : "ele-1",
"severity" : "error",
"human" : "All FHIR elements must have a @value or children",
"expression" : "hasValue() or (children().count() > id.count())",
"xpath" : "@value|f:*|h:div",
"source" : "http://hl7.org/fhir/StructureDefinition/Element"
},
{
"key" : "ext-1",
"severity" : "error",
"human" : "Must have either extensions or value[x], not both",
"expression" : "extension.exists() != value.exists()",
"xpath" : "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
"source" : "http://hl7.org/fhir/StructureDefinition/Extension"
}
],
"isModifier" : false,
"isSummary" : false
},
{
"id" : "Expression.description",
"path" : "Expression.description",
"short" : "Describe what the criterion does to a human (non-engineer)",
"definition" : "A brief, natural language description of the condition that effectively communicates the intended semantics.",
"min" : 1,
"max" : "1",
"base" : {
"path" : "Expression.description",
"min" : 0,
"max" : "1"
},
"type" : [
{
"code" : "string"
}
],
"constraint" : [
{
"key" : "ele-1",
"severity" : "error",
"human" : "All FHIR elements must have a @value or children",
"expression" : "hasValue() or (children().count() > id.count())",
"xpath" : "@value|f:*|h:div",
"source" : "http://hl7.org/fhir/StructureDefinition/Element"
}
],
"mustSupport" : true,
"isModifier" : false,
"isSummary" : true
},
{
"id" : "Expression.name",
"path" : "Expression.name",
"short" : "name should align with code.",
"definition" : "A short name assigned to the expression to allow for multiple reuse of the expression in the context where it is defined.",
"min" : 0,
"max" : "1",
"base" : {
"path" : "Expression.name",
"min" : 0,
"max" : "1"
},
"type" : [
{
"code" : "id"
}
],
"constraint" : [
{
"key" : "ele-1",
"severity" : "error",
"human" : "All FHIR elements must have a @value or children",
"expression" : "hasValue() or (children().count() > id.count())",
"xpath" : "@value|f:*|h:div",
"source" : "http://hl7.org/fhir/StructureDefinition/Element"
}
],
"mustSupport" : true,
"isModifier" : false,
"isSummary" : true
},
{
"id" : "Expression.language",
"path" : "Expression.language",
"short" : "Provide the language for the criterion",
"definition" : "The media type of the language for the expression.",
"min" : 1,
"max" : "1",
"base" : {
"path" : "Expression.language",
"min" : 1,
"max" : "1"
},
"type" : [
{
"code" : "code"
}
],
"constraint" : [
{
"key" : "ele-1",
"severity" : "error",
"human" : "All FHIR elements must have a @value or children",
"expression" : "hasValue() or (children().count() > id.count())",
"xpath" : "@value|f:*|h:div",
"source" : "http://hl7.org/fhir/StructureDefinition/Element"
}
],
"mustSupport" : true,
"isModifier" : false,
"isSummary" : true,
"binding" : {
"extension" : [
{
"url" : "http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet",
"valueCanonical" : "http://www.rfc-editor.org/bcp/bcp13.txt"
},
{
"url" : "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
"valueString" : "ExpressionLanguage"
}
],
"strength" : "extensible",
"description" : "The media type of the expression language.",
"valueSet" : "http://hl7.org/fhir/ValueSet/expression-language"
}
},
{
"id" : "Expression.expression",
"path" : "Expression.expression",
"short" : "A measure must describe how to automate the computation in an expression that can be evaluated in the specified language",
"definition" : "An expression in the specified language that returns a value.",
"min" : 1,
"max" : "1",
"base" : {
"path" : "Expression.expression",
"min" : 0,
"max" : "1"
},
"type" : [
{
"code" : "string"
}
],
"constraint" : [
{
"key" : "ele-1",
"severity" : "error",
"human" : "All FHIR elements must have a @value or children",
"expression" : "hasValue() or (children().count() > id.count())",
"xpath" : "@value|f:*|h:div",
"source" : "http://hl7.org/fhir/StructureDefinition/Element"
}
],
"mustSupport" : true,
"isModifier" : false,
"isSummary" : true
},
{
"id" : "Expression.reference",
"path" : "Expression.reference",
"short" : "Where the expression is found",
"definition" : "A URI that defines where the expression is found.",
"comment" : "If both a reference and an expression is found, the reference SHALL point to the same expression.",
"min" : 0,
"max" : "1",
"base" : {
"path" : "Expression.reference",
"min" : 0,
"max" : "1"
},
"type" : [
{
"code" : "uri"
}
],
"constraint" : [
{
"key" : "ele-1",
"severity" : "error",
"human" : "All FHIR elements must have a @value or children",
"expression" : "hasValue() or (children().count() > id.count())",
"xpath" : "@value|f:*|h:div",
"source" : "http://hl7.org/fhir/StructureDefinition/Element"
}
],
"isModifier" : false,
"isSummary" : true
}
]
},
"differential" : {
"element" : [
{
"id" : "Expression",
"path" : "Expression"
},
{
"id" : "Expression.extension:alternateCriteria",
"path" : "Expression.extension",
"sliceName" : "alternateCriteria",
"short" : "Other expressions for computing the criterion",
"min" : 0,
"max" : "1",
"type" : [
{
"code" : "Extension",
"profile" : [
"http://hl7.org/fhir/uv/saner/StructureDefinition/MeasureAlternateCriteria"
]
}
]
},
{
"id" : "Expression.description",
"path" : "Expression.description",
"short" : "Describe what the criterion does to a human (non-engineer)",
"min" : 1,
"mustSupport" : true
},
{
"id" : "Expression.name",
"path" : "Expression.name",
"short" : "name should align with code.",
"mustSupport" : true
},
{
"id" : "Expression.language",
"path" : "Expression.language",
"short" : "Provide the language for the criterion",
"mustSupport" : true
},
{
"id" : "Expression.expression",
"path" : "Expression.expression",
"short" : "A measure must describe how to automate the computation in an expression that can be evaluated in the specified language",
"min" : 1,
"mustSupport" : true
}
]
}
}