Cross-Version Extension for StructureDefinition.baseDefinition in R4

Context of Use

This extension may be used in the following contexts:

• element DataElement (For version R3)
• extension http://hl7.org/fhir/3.0/StructureDefinition/extension-DataElement
• element StructureDefinition (For version R3)
• extension http://hl7.org/fhir/3.0/StructureDefinition/extension-StructureDefinition
• element DataElement (For version R2)
• extension http://hl7.org/fhir/1.0/StructureDefinition/extension-DataElement
• element StructureDefinition (For version R2)
• extension http://hl7.org/fhir/1.0/StructureDefinition/extension-StructureDefinition

Name	Flags	Card.	Type	Description & Constraints
Extension		0..1	Extension	Definition that this type is constrained/specialized from
extension		..0
value[x]		1..	canonical(StructureDefinition)
url				"http://hl7.org/fhir/4.0/StructureDefinition/extension-StructureDefinition.baseDefinition"
Documentation for this format

{
  "resourceType" : "StructureDefinition",
  "id" : "xv-r4-sdf.baseDefinition",
  "url" : "http://hl7.org/fhir/4.0/StructureDefinition/extension-StructureDefinition.baseDefinition",
  "name" : "XVerExtensionStructureDefinition.baseDefinitionR4",
  "title" : "Cross-Version Extension for StructureDefinition.baseDefinition in R4",
  "status" : "active",
  "experimental" : false,
  "publisher" : "Health Level Seven International (FHIR Infrastructure)",
  "contact" : [{
    "telecom" : [{
      "system" : "url",
      "value" : "http://hl7.org/fhir"
    }]
  },
  {
    "telecom" : [{
      "system" : "url",
      "value" : "http://www.hl7.org/Special/committees/fiwg/index.cfm"
    }]
  }],
  "description" : "Cross-Version Extension for StructureDefinition.baseDefinition. Valid in versions R2, R3\r\n\r\nThis is a valid extension because it has the types canonical",
  "jurisdiction" : [{
    "coding" : [{
      "system" : "http://unstats.un.org/unsd/methods/m49/m49.htm",
      "code" : "001"
    }]
  }],
  "fhirVersion" : "5.0.0",
  "kind" : "complex-type",
  "abstract" : false,
  "context" : [{
    "extension" : [{
      "extension" : [{
        "url" : "startFhirVersion",
        "valueCode" : "3.0"
      },
      {
        "url" : "endFhirVersion",
        "valueCode" : "3.0"
      }],
      "url" : "http://hl7.org/fhir/StructureDefinition/version-specific-use"
    }],
    "type" : "element",
    "expression" : "DataElement"
  },
  {
    "type" : "extension",
    "expression" : "http://hl7.org/fhir/3.0/StructureDefinition/extension-DataElement"
  },
  {
    "extension" : [{
      "extension" : [{
        "url" : "startFhirVersion",
        "valueCode" : "3.0"
      },
      {
        "url" : "endFhirVersion",
        "valueCode" : "3.0"
      }],
      "url" : "http://hl7.org/fhir/StructureDefinition/version-specific-use"
    }],
    "type" : "element",
    "expression" : "StructureDefinition"
  },
  {
    "type" : "extension",
    "expression" : "http://hl7.org/fhir/3.0/StructureDefinition/extension-StructureDefinition"
  },
  {
    "extension" : [{
      "extension" : [{
        "url" : "startFhirVersion",
        "valueCode" : "1.0"
      },
      {
        "url" : "endFhirVersion",
        "valueCode" : "1.0"
      }],
      "url" : "http://hl7.org/fhir/StructureDefinition/version-specific-use"
    }],
    "type" : "element",
    "expression" : "DataElement"
  },
  {
    "type" : "extension",
    "expression" : "http://hl7.org/fhir/1.0/StructureDefinition/extension-DataElement"
  },
  {
    "extension" : [{
      "extension" : [{
        "url" : "startFhirVersion",
        "valueCode" : "1.0"
      },
      {
        "url" : "endFhirVersion",
        "valueCode" : "1.0"
      }],
      "url" : "http://hl7.org/fhir/StructureDefinition/version-specific-use"
    }],
    "type" : "element",
    "expression" : "StructureDefinition"
  },
  {
    "type" : "extension",
    "expression" : "http://hl7.org/fhir/1.0/StructureDefinition/extension-StructureDefinition"
  }],
  "type" : "Extension",
  "baseDefinition" : "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation" : "constraint",
  "differential" : {
    "element" : [{
      "path" : "Extension",
      "short" : "Definition that this type is constrained/specialized from",
      "definition" : "An absolute URI that is the base structure from which this type is derived, either by specialization or constraint.",
      "comment" : "If differential constraints are specified in this structure, they are applied to the base in a \"differential\" fashion. If there is no base, then the differential constraints cannot be provided (snapshot only). Differential structures are useful for the editing perspective, and snapshot structures are suitable for operational use. The FHIR Project provides a number of tools/services to populate snapshots from differential constraints. Logical Models have a base of \"Element\" or another logical model.",
      "min" : 0,
      "max" : "1",
      "isModifier" : false
    },
    {
      "path" : "Extension.extension",
      "max" : "0"
    },
    {
      "path" : "Extension.value[x]",
      "min" : 1,
      "type" : [{
        "extension" : [{
          "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-hierarchy",
          "valueBoolean" : true
        }],
        "code" : "canonical",
        "targetProfile" : ["http://hl7.org/fhir/StructureDefinition/StructureDefinition"]
      }]
    },
    {
      "path" : "Extension.url",
      "fixedUri" : "http://hl7.org/fhir/4.0/StructureDefinition/extension-StructureDefinition.baseDefinition"
    }]
  }
}