{ "resourceType" : "StructureDefinition", "id" : "feature", "text" : { "status" : "extensions", "div" : "

Generated Narrative: StructureDefinition feature

\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
NameFlagsCard.TypeDescription & Constraints\"doco\"
\".\"\".\" Extension 0..*ExtensionExtension
\".\"\".\"\".\" extension 2..*ExtensionExtension
\".\"\".\"\".\" Slices for extension Content/Rules for all slices
\".\"\".\"\".\"\".\" extension:definition S1..1ExtensionExtension
\".\"\".\"\".\"\".\"\".\" extension 0..0Extension
\".\"\".\"\".\"\".\"\".\" url 1..1uri"definition"
\".\"\".\"\".\"\".\"\".\" value[x] 1..1canonical(Feature Definition)Value of extension
\".\"\".\"\".\"\".\" extension:context S0..*ExtensionExtension
\".\"\".\"\".\"\".\"\".\" extension 0..0Extension
\".\"\".\"\".\"\".\"\".\" url 1..1uri"context"
\".\"\".\"\".\"\".\"\".\" value[x] 1..1stringThe context(s) on which this feature can be defined. The context(s) declared in this extension must align with one or more of the contexts in the FeatureDefinition.
\".\"\".\"\".\"\".\" extension:value S1..1ExtensionExtension
\".\"\".\"\".\"\".\"\".\" extension 0..0Extension
\".\"\".\"\".\"\".\"\".\" url 1..1uri"value"
\".\"\".\"\".\"\".\"\".\" value[x] 1..1base64Binary, boolean, canonical(), code, date, dateTime, decimal, id, instant, integer, integer64, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference(), Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference(), SampledData, Signature, Timing, ContactDetail, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Availability, ExtendedContactDetail, Dosage, MetaThe value of the feature. Must align with the type and ValueSet (if a code type) in the FeatureDefinition.
\".\"\".\"\".\" url 1..1uri"http://hl7.org/fhir/uv/application-feature/StructureDefinition/feature"
\".\"\".\"\".\" value[x] 0..0Value of extension

\"doco\" Documentation for this format
" }, "extension" : [{ "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-type-characteristics", "valueCode" : "can-bind" }, { "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg", "valueCode" : "fhir" }, { "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm", "valueInteger" : 2, "_valueInteger" : { "extension" : [{ "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom", "valueCanonical" : "http://hl7.org/fhir/uv/application-feature/ImplementationGuide/hl7.fhir.uv.application-feature" }] } }, { "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status", "valueCode" : "trial-use", "_valueCode" : { "extension" : [{ "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom", "valueCanonical" : "http://hl7.org/fhir/uv/application-feature/ImplementationGuide/hl7.fhir.uv.application-feature" }] } }], "url" : "http://hl7.org/fhir/uv/application-feature/StructureDefinition/feature", "version" : "1.0.0", "name" : "Feature", "status" : "active", "date" : "2026-06-04T01:52:45+10:00", "publisher" : "HL7 International / FHIR Infrastructure", "contact" : [{ "name" : "HL7 International / FHIR Infrastructure", "telecom" : [{ "system" : "url", "value" : "http://www.hl7.org/Special/committees/fiwg" }] }], "description" : "This extension documents the features of a system using code/value pairs", "jurisdiction" : [{ "coding" : [{ "system" : "http://unstats.un.org/unsd/methods/m49/m49.htm", "code" : "001", "display" : "World" }] }], "fhirVersion" : "5.0.0", "mapping" : [{ "identity" : "rim", "uri" : "http://hl7.org/v3", "name" : "RIM Mapping" }], "kind" : "complex-type", "abstract" : false, "context" : [{ "type" : "element", "expression" : "CapabilityStatement" }, { "type" : "element", "expression" : "TerminologyCapabilities" }], "type" : "Extension", "baseDefinition" : "http://hl7.org/fhir/StructureDefinition/Extension", "derivation" : "constraint", "snapshot" : { "extension" : [{ "url" : "http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version", "valueString" : "5.0.0" }], "element" : [{ "id" : "Extension", "path" : "Extension", "short" : "Extension", "definition" : "This extension documents the features of a system using code/value pairs", "min" : 0, "max" : "*", "base" : { "path" : "Extension", "min" : 0, "max" : "*" }, "constraint" : [{ "key" : "ele-1", "severity" : "error", "human" : "All FHIR elements must have a @value or children", "expression" : "hasValue() or (children().count() > id.count())", "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()", "source" : "http://hl7.org/fhir/StructureDefinition/Extension" }], "isModifier" : false }, { "id" : "Extension.id", "path" : "Extension.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" : "id" }], "code" : "http://hl7.org/fhirpath/System.String" }], "condition" : ["ele-1"], "isModifier" : false, "isSummary" : false, "mapping" : [{ "identity" : "rim", "map" : "n/a" }] }, { "id" : "Extension.extension", "path" : "Extension.extension", "slicing" : { "discriminator" : [{ "type" : "value", "path" : "url" }], "description" : "Extensions are always sliced by (at least) url", "rules" : "open" }, "short" : "Extension", "definition" : "An Extension", "min" : 2, "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())", "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()", "source" : "http://hl7.org/fhir/StructureDefinition/Extension" }], "isModifier" : false, "isSummary" : false }, { "id" : "Extension.extension:definition", "path" : "Extension.extension", "sliceName" : "definition", "short" : "Extension", "definition" : "An Extension", "min" : 1, "max" : "1", "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())", "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()", "source" : "http://hl7.org/fhir/StructureDefinition/Extension" }], "mustSupport" : true, "isModifier" : false, "isSummary" : false }, { "id" : "Extension.extension:definition.id", "path" : "Extension.extension.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" : "id" }], "code" : "http://hl7.org/fhirpath/System.String" }], "condition" : ["ele-1"], "isModifier" : false, "isSummary" : false, "mapping" : [{ "identity" : "rim", "map" : "n/a" }] }, { "id" : "Extension.extension:definition.extension", "path" : "Extension.extension.extension", "slicing" : { "discriminator" : [{ "type" : "value", "path" : "url" }], "description" : "Extensions are always sliced by (at least) url", "rules" : "open" }, "short" : "Extension", "definition" : "An Extension", "min" : 0, "max" : "0", "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())", "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()", "source" : "http://hl7.org/fhir/StructureDefinition/Extension" }], "isModifier" : false, "isSummary" : false }, { "id" : "Extension.extension:definition.url", "path" : "Extension.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.", "comment" : "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 SHALL be a URI for the Structure Definition defining the extension.", "min" : 1, "max" : "1", "base" : { "path" : "Extension.url", "min" : 1, "max" : "1" }, "type" : [{ "extension" : [{ "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type", "valueUrl" : "uri" }], "code" : "http://hl7.org/fhirpath/System.String" }], "fixedUri" : "definition", "isModifier" : false, "isSummary" : false, "mapping" : [{ "identity" : "rim", "map" : "N/A" }] }, { "id" : "Extension.extension:definition.value[x]", "path" : "Extension.extension.value[x]", "short" : "Value of extension", "definition" : "Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/R5/extensibility.html) for a list).", "min" : 1, "max" : "1", "base" : { "path" : "Extension.value[x]", "min" : 0, "max" : "1" }, "type" : [{ "code" : "canonical", "targetProfile" : ["http://hl7.org/fhir/uv/application-feature/StructureDefinition/FeatureDefinition"] }], "condition" : ["ext-1"], "constraint" : [{ "key" : "ele-1", "severity" : "error", "human" : "All FHIR elements must have a @value or children", "expression" : "hasValue() or (children().count() > id.count())", "source" : "http://hl7.org/fhir/StructureDefinition/Element" }], "isModifier" : false, "isSummary" : false, "mapping" : [{ "identity" : "rim", "map" : "N/A" }] }, { "id" : "Extension.extension:context", "path" : "Extension.extension", "sliceName" : "context", "short" : "Extension", "definition" : "An Extension", "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())", "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()", "source" : "http://hl7.org/fhir/StructureDefinition/Extension" }], "mustSupport" : true, "isModifier" : false, "isSummary" : false }, { "id" : "Extension.extension:context.id", "path" : "Extension.extension.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" : "id" }], "code" : "http://hl7.org/fhirpath/System.String" }], "condition" : ["ele-1"], "isModifier" : false, "isSummary" : false, "mapping" : [{ "identity" : "rim", "map" : "n/a" }] }, { "id" : "Extension.extension:context.extension", "path" : "Extension.extension.extension", "slicing" : { "discriminator" : [{ "type" : "value", "path" : "url" }], "description" : "Extensions are always sliced by (at least) url", "rules" : "open" }, "short" : "Extension", "definition" : "An Extension", "min" : 0, "max" : "0", "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())", "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()", "source" : "http://hl7.org/fhir/StructureDefinition/Extension" }], "isModifier" : false, "isSummary" : false }, { "id" : "Extension.extension:context.url", "path" : "Extension.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.", "comment" : "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 SHALL be a URI for the Structure Definition defining the extension.", "min" : 1, "max" : "1", "base" : { "path" : "Extension.url", "min" : 1, "max" : "1" }, "type" : [{ "extension" : [{ "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type", "valueUrl" : "uri" }], "code" : "http://hl7.org/fhirpath/System.String" }], "fixedUri" : "context", "isModifier" : false, "isSummary" : false, "mapping" : [{ "identity" : "rim", "map" : "N/A" }] }, { "id" : "Extension.extension:context.value[x]", "path" : "Extension.extension.value[x]", "short" : "The context(s) on which this feature can be defined. The context(s) declared in this extension must align with one or more of the contexts in the FeatureDefinition.", "definition" : "Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/R5/extensibility.html) for a list).", "min" : 1, "max" : "1", "base" : { "path" : "Extension.value[x]", "min" : 0, "max" : "1" }, "type" : [{ "code" : "string" }], "condition" : ["ext-1"], "constraint" : [{ "key" : "ele-1", "severity" : "error", "human" : "All FHIR elements must have a @value or children", "expression" : "hasValue() or (children().count() > id.count())", "source" : "http://hl7.org/fhir/StructureDefinition/Element" }], "isModifier" : false, "isSummary" : false, "mapping" : [{ "identity" : "rim", "map" : "N/A" }] }, { "id" : "Extension.extension:value", "path" : "Extension.extension", "sliceName" : "value", "short" : "Extension", "definition" : "An Extension", "min" : 1, "max" : "1", "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())", "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()", "source" : "http://hl7.org/fhir/StructureDefinition/Extension" }], "mustSupport" : true, "isModifier" : false, "isSummary" : false }, { "id" : "Extension.extension:value.id", "path" : "Extension.extension.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" : "id" }], "code" : "http://hl7.org/fhirpath/System.String" }], "condition" : ["ele-1"], "isModifier" : false, "isSummary" : false, "mapping" : [{ "identity" : "rim", "map" : "n/a" }] }, { "id" : "Extension.extension:value.extension", "path" : "Extension.extension.extension", "slicing" : { "discriminator" : [{ "type" : "value", "path" : "url" }], "description" : "Extensions are always sliced by (at least) url", "rules" : "open" }, "short" : "Extension", "definition" : "An Extension", "min" : 0, "max" : "0", "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())", "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()", "source" : "http://hl7.org/fhir/StructureDefinition/Extension" }], "isModifier" : false, "isSummary" : false }, { "id" : "Extension.extension:value.url", "path" : "Extension.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.", "comment" : "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 SHALL be a URI for the Structure Definition defining the extension.", "min" : 1, "max" : "1", "base" : { "path" : "Extension.url", "min" : 1, "max" : "1" }, "type" : [{ "extension" : [{ "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type", "valueUrl" : "uri" }], "code" : "http://hl7.org/fhirpath/System.String" }], "fixedUri" : "value", "isModifier" : false, "isSummary" : false, "mapping" : [{ "identity" : "rim", "map" : "N/A" }] }, { "id" : "Extension.extension:value.value[x]", "path" : "Extension.extension.value[x]", "short" : "The value of the feature. Must align with the type and ValueSet (if a code type) in the FeatureDefinition.", "definition" : "Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/R5/extensibility.html) for a list).", "min" : 1, "max" : "1", "base" : { "path" : "Extension.value[x]", "min" : 0, "max" : "1" }, "type" : [{ "code" : "base64Binary" }, { "code" : "boolean" }, { "code" : "canonical" }, { "code" : "code" }, { "code" : "date" }, { "code" : "dateTime" }, { "code" : "decimal" }, { "code" : "id" }, { "code" : "instant" }, { "code" : "integer" }, { "code" : "integer64" }, { "code" : "markdown" }, { "code" : "oid" }, { "code" : "positiveInt" }, { "code" : "string" }, { "code" : "time" }, { "code" : "unsignedInt" }, { "code" : "uri" }, { "code" : "url" }, { "code" : "uuid" }, { "code" : "Address" }, { "code" : "Age" }, { "code" : "Annotation" }, { "code" : "Attachment" }, { "code" : "CodeableConcept" }, { "code" : "CodeableReference" }, { "code" : "Coding" }, { "code" : "ContactPoint" }, { "code" : "Count" }, { "code" : "Distance" }, { "code" : "Duration" }, { "code" : "HumanName" }, { "code" : "Identifier" }, { "code" : "Money" }, { "code" : "Period" }, { "code" : "Quantity" }, { "code" : "Range" }, { "code" : "Ratio" }, { "code" : "RatioRange" }, { "code" : "Reference" }, { "code" : "SampledData" }, { "code" : "Signature" }, { "code" : "Timing" }, { "code" : "ContactDetail" }, { "code" : "DataRequirement" }, { "code" : "Expression" }, { "code" : "ParameterDefinition" }, { "code" : "RelatedArtifact" }, { "code" : "TriggerDefinition" }, { "code" : "UsageContext" }, { "code" : "Availability" }, { "code" : "ExtendedContactDetail" }, { "code" : "Dosage" }, { "code" : "Meta" }], "condition" : ["ext-1"], "constraint" : [{ "key" : "ele-1", "severity" : "error", "human" : "All FHIR elements must have a @value or children", "expression" : "hasValue() or (children().count() > id.count())", "source" : "http://hl7.org/fhir/StructureDefinition/Element" }], "isModifier" : false, "isSummary" : false, "mapping" : [{ "identity" : "rim", "map" : "N/A" }] }, { "id" : "Extension.url", "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.", "comment" : "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 SHALL be a URI for the Structure Definition defining the extension.", "min" : 1, "max" : "1", "base" : { "path" : "Extension.url", "min" : 1, "max" : "1" }, "type" : [{ "extension" : [{ "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type", "valueUrl" : "uri" }], "code" : "http://hl7.org/fhirpath/System.String" }], "fixedUri" : "http://hl7.org/fhir/uv/application-feature/StructureDefinition/feature", "isModifier" : false, "isSummary" : false, "mapping" : [{ "identity" : "rim", "map" : "N/A" }] }, { "id" : "Extension.value[x]", "path" : "Extension.value[x]", "short" : "Value of extension", "definition" : "Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/R5/extensibility.html) for a list).", "min" : 0, "max" : "0", "base" : { "path" : "Extension.value[x]", "min" : 0, "max" : "1" }, "type" : [{ "code" : "base64Binary" }, { "code" : "boolean" }, { "code" : "canonical" }, { "code" : "code" }, { "code" : "date" }, { "code" : "dateTime" }, { "code" : "decimal" }, { "code" : "id" }, { "code" : "instant" }, { "code" : "integer" }, { "code" : "integer64" }, { "code" : "markdown" }, { "code" : "oid" }, { "code" : "positiveInt" }, { "code" : "string" }, { "code" : "time" }, { "code" : "unsignedInt" }, { "code" : "uri" }, { "code" : "url" }, { "code" : "uuid" }, { "code" : "Address" }, { "code" : "Age" }, { "code" : "Annotation" }, { "code" : "Attachment" }, { "code" : "CodeableConcept" }, { "code" : "CodeableReference" }, { "code" : "Coding" }, { "code" : "ContactPoint" }, { "code" : "Count" }, { "code" : "Distance" }, { "code" : "Duration" }, { "code" : "HumanName" }, { "code" : "Identifier" }, { "code" : "Money" }, { "code" : "Period" }, { "code" : "Quantity" }, { "code" : "Range" }, { "code" : "Ratio" }, { "code" : "RatioRange" }, { "code" : "Reference" }, { "code" : "SampledData" }, { "code" : "Signature" }, { "code" : "Timing" }, { "code" : "ContactDetail" }, { "code" : "DataRequirement" }, { "code" : "Expression" }, { "code" : "ParameterDefinition" }, { "code" : "RelatedArtifact" }, { "code" : "TriggerDefinition" }, { "code" : "UsageContext" }, { "code" : "Availability" }, { "code" : "ExtendedContactDetail" }, { "code" : "Dosage" }, { "code" : "Meta" }], "condition" : ["ext-1"], "constraint" : [{ "key" : "ele-1", "severity" : "error", "human" : "All FHIR elements must have a @value or children", "expression" : "hasValue() or (children().count() > id.count())", "source" : "http://hl7.org/fhir/StructureDefinition/Element" }], "isModifier" : false, "isSummary" : false, "mapping" : [{ "identity" : "rim", "map" : "N/A" }] }] }, "differential" : { "element" : [{ "id" : "Extension", "path" : "Extension", "definition" : "This extension documents the features of a system using code/value pairs" }, { "id" : "Extension.extension", "path" : "Extension.extension", "min" : 2 }, { "id" : "Extension.extension:definition", "path" : "Extension.extension", "sliceName" : "definition", "min" : 1, "max" : "1", "mustSupport" : true }, { "id" : "Extension.extension:definition.extension", "path" : "Extension.extension.extension", "max" : "0" }, { "id" : "Extension.extension:definition.url", "path" : "Extension.extension.url", "fixedUri" : "definition" }, { "id" : "Extension.extension:definition.value[x]", "path" : "Extension.extension.value[x]", "min" : 1, "type" : [{ "code" : "canonical", "targetProfile" : ["http://hl7.org/fhir/uv/application-feature/StructureDefinition/FeatureDefinition"] }] }, { "id" : "Extension.extension:context", "path" : "Extension.extension", "sliceName" : "context", "min" : 0, "max" : "*", "mustSupport" : true }, { "id" : "Extension.extension:context.extension", "path" : "Extension.extension.extension", "max" : "0" }, { "id" : "Extension.extension:context.url", "path" : "Extension.extension.url", "fixedUri" : "context" }, { "id" : "Extension.extension:context.value[x]", "path" : "Extension.extension.value[x]", "short" : "The context(s) on which this feature can be defined. The context(s) declared in this extension must align with one or more of the contexts in the FeatureDefinition.", "min" : 1, "type" : [{ "code" : "string" }] }, { "id" : "Extension.extension:value", "path" : "Extension.extension", "sliceName" : "value", "min" : 1, "max" : "1", "mustSupport" : true }, { "id" : "Extension.extension:value.extension", "path" : "Extension.extension.extension", "max" : "0" }, { "id" : "Extension.extension:value.url", "path" : "Extension.extension.url", "fixedUri" : "value" }, { "id" : "Extension.extension:value.value[x]", "path" : "Extension.extension.value[x]", "short" : "The value of the feature. Must align with the type and ValueSet (if a code type) in the FeatureDefinition.", "min" : 1 }, { "id" : "Extension.url", "path" : "Extension.url", "fixedUri" : "http://hl7.org/fhir/uv/application-feature/StructureDefinition/feature" }, { "id" : "Extension.value[x]", "path" : "Extension.value[x]", "max" : "0" }] } }