Cross-Version Extension for SearchParameter.derivedFrom in R4

Context of Use

This extension may be used in the following contexts:

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

Name	Flags	Card.	Type	Description & Constraints
Extension		0..1	Extension	Original definition for the search parameter
extension		..0
value[x]		1..	canonical(SearchParameter)
url				"http://hl7.org/fhir/4.0/StructureDefinition/extension-SearchParameter.derivedFrom"
Documentation for this format

{
  "resourceType" : "StructureDefinition",
  "id" : "xv-r4-spd.derivedFrom",
  "url" : "http://hl7.org/fhir/4.0/StructureDefinition/extension-SearchParameter.derivedFrom",
  "name" : "XVerExtensionSearchParameter.derivedFromR4",
  "title" : "Cross-Version Extension for SearchParameter.derivedFrom 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 SearchParameter.derivedFrom. 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" : "SearchParameter"
  },
  {
    "type" : "extension",
    "expression" : "http://hl7.org/fhir/3.0/StructureDefinition/extension-SearchParameter"
  },
  {
    "extension" : [{
      "extension" : [{
        "url" : "startFhirVersion",
        "valueCode" : "1.0"
      },
      {
        "url" : "endFhirVersion",
        "valueCode" : "1.0"
      }],
      "url" : "http://hl7.org/fhir/StructureDefinition/version-specific-use"
    }],
    "type" : "element",
    "expression" : "SearchParameter"
  },
  {
    "type" : "extension",
    "expression" : "http://hl7.org/fhir/1.0/StructureDefinition/extension-SearchParameter"
  }],
  "type" : "Extension",
  "baseDefinition" : "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation" : "constraint",
  "differential" : {
    "element" : [{
      "path" : "Extension",
      "short" : "Original definition for the search parameter",
      "definition" : "Where this search parameter is originally defined. If a derivedFrom is provided, then the details in the search parameter must be consistent with the definition from which it is defined. i.e. the parameter should have the same meaning, and (usually) the functionality should be a proper subset of the underlying search parameter.",
      "comment" : "The intent of this is that a server can designate that it provides support for a search parameter defined in the specification itself (e.g.  [`value-quantity`](http://hl7.org/fhir/SearchParameter/Observation-value-quantity), but detail how it is supported by the server.",
      "min" : 0,
      "max" : "1",
      "isModifier" : false
    },
    {
      "path" : "Extension.extension",
      "max" : "0"
    },
    {
      "path" : "Extension.value[x]",
      "min" : 1,
      "type" : [{
        "code" : "canonical",
        "targetProfile" : ["http://hl7.org/fhir/StructureDefinition/SearchParameter"]
      }]
    },
    {
      "path" : "Extension.url",
      "fixedUri" : "http://hl7.org/fhir/4.0/StructureDefinition/extension-SearchParameter.derivedFrom"
    }]
  }
}