Cross-Version Extension for Attachment.url in R4

Context of Use

This extension may be used in the following contexts:

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

Name	Flags	Card.	Type	Description & Constraints
Extension		0..1	Extension	Uri where the data can be found
extension		..0
value[x]		1..	url
url				"http://hl7.org/fhir/4.0/StructureDefinition/extension-Attachment.url"
Documentation for this format

{
  "resourceType" : "StructureDefinition",
  "id" : "xv-r4-att.url",
  "url" : "http://hl7.org/fhir/4.0/StructureDefinition/extension-Attachment.url",
  "name" : "XVerExtensionAttachment.urlR4",
  "title" : "Cross-Version Extension for Attachment.url in R4",
  "status" : "active",
  "experimental" : false,
  "publisher" : "HL7 FHIR Standard",
  "contact" : [{
    "telecom" : [{
      "system" : "url",
      "value" : "http://hl7.org/fhir"
    }]
  }],
  "description" : "Cross-Version Extension for Attachment.url. Valid in versions R2, R3\r\n\r\nThis is a valid extension because it has the types url",
  "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" : "Attachment"
  },
  {
    "type" : "extension",
    "expression" : "http://hl7.org/fhir/3.0/StructureDefinition/extension-Attachment"
  },
  {
    "extension" : [{
      "extension" : [{
        "url" : "startFhirVersion",
        "valueCode" : "1.0"
      },
      {
        "url" : "endFhirVersion",
        "valueCode" : "1.0"
      }],
      "url" : "http://hl7.org/fhir/StructureDefinition/version-specific-use"
    }],
    "type" : "element",
    "expression" : "Attachment"
  },
  {
    "type" : "extension",
    "expression" : "http://hl7.org/fhir/1.0/StructureDefinition/extension-Attachment"
  }],
  "type" : "Extension",
  "baseDefinition" : "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation" : "constraint",
  "differential" : {
    "element" : [{
      "path" : "Extension",
      "short" : "Uri where the data can be found",
      "definition" : "A location where the data can be accessed.",
      "comment" : "If both data and url are provided, the url SHALL point to the same content as the data contains. Urls may be relative references or may reference transient locations such as a wrapping envelope using cid: though this has ramifications for using signatures. Relative URLs are interpreted relative to the service url, like a resource reference, rather than relative to the resource itself. If a URL is provided, it SHALL resolve to actual data.",
      "requirements" : "The data needs to be transmitted by reference.",
      "min" : 0,
      "max" : "1",
      "isModifier" : false,
      "mapping" : [{
        "identity" : "v2",
        "map" : "RP.1+RP.2 - if they refer to a URL (see v2.6)"
      },
      {
        "identity" : "rim",
        "map" : "./reference/literal"
      }]
    },
    {
      "path" : "Extension.extension",
      "max" : "0"
    },
    {
      "path" : "Extension.value[x]",
      "min" : 1,
      "type" : [{
        "code" : "url"
      }]
    },
    {
      "path" : "Extension.url",
      "fixedUri" : "http://hl7.org/fhir/4.0/StructureDefinition/extension-Attachment.url"
    }]
  }
}