# Health Connect Australia Provider Directory FHIR Implementation Guide

0.2.0-preview - Preview

Health Connect Australia Provider Directory FHIR Implementation Guide, published by Australian Digital Health Agency. This guide is not an authorized publication; it is the continuous build for version 0.2.0-preview built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/steveswinsburg/HealthConnect/ and changes regularly. See the Directory of published versions

## Data Type Profile: HCHPIOIdentifier - JSON Profile

Page standards status: Draft

JSON representation of the hc-hpio data type profile.

Raw json | Download

    {
      "resourceType" : "StructureDefinition",
      "id" : "hc-hpio",
      "text" : {
        "status" : "extensions",
        "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: StructureDefinition hc-hpio</b></p><a name=\"hc-hpio\"> </a><a name=\"hchc-hpio\"> </a><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 : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px\" class=\"hierarchy\"><a href=\"https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views\" title=\"The logical name of the element\">Name</a></th><th style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px\" class=\"hierarchy\"><a href=\"https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views\" title=\"Information about the use of the element\">Flags</a></th><th style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px\" class=\"hierarchy\"><a href=\"https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views\" title=\"Minimum and Maximum # of times the element can appear in the instance\">Card.</a></th><th style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px; width: 100px\" class=\"hierarchy\"><a href=\"https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views\" title=\"Reference to the type of the element\">Type</a></th><th style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px\" class=\"hierarchy\"><a href=\"https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views\" title=\"Additional information about the element\">Description &amp; Constraints</a><span style=\"float: right\"><a href=\"https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views\" title=\"Legend for this format\"><img src=\"data:image/png;base64, \" 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 : var(--ig-left,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-hc-hpio-definitions.html#Identifier\">Identifier</a><a name=\"Identifier\"> </a></td><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : var(--ig-left,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 : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a href=\"http://hl7.org.au/fhir/6.0.0/StructureDefinition-au-hpio.html\">AUHPIO(6.0.0)</a></td><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"opacity: 0.5\">Healthcare Provider Identifier – Organisation (HPI-O)</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 : var(--ig-left,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_extension_simple.png\" alt=\".\" style=\"background-color: #F7F7F7; background-color: inherit\" title=\"Simple Extension\" class=\"hierarchy\"/> <a href=\"StructureDefinition-hc-hpio-definitions.html#Identifier.extension\">extension</a><a name=\"Identifier.extension\"> </a></td><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">1..<span style=\"opacity: 0.5\">*</span></td><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a style=\"opacity: 0.5; opacity: 0.5\" href=\"http://hl7.org/fhir/R4/extensibility.html#Extension\">Extension</a></td><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"opacity: 0.5\">Extension</span></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 : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck03.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_slice.png\" alt=\".\" style=\"background-color: white; background-color: inherit\" title=\"Slice Definition\" class=\"hierarchy\"/> Slices for extension<a name=\"Identifier.extension.2\"> </a></td><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">Content/Rules for all slices</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 : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck024.png)\" class=\"hierarchy\"><img src=\"tbl_spacer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_blank.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vjoin_end_slicer.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-hc-hpio-definitions.html#Identifier.extension:HCOrgClassification\" title=\"Extension URL = http://ns.electronichealth.net.au/hc/StructureDefinition/hc-org-classification\">extension:HCOrgClassification</a><a name=\"Identifier.extension.3\"> </a></td><td style=\"vertical-align: top; text-align : var(--ig-left,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 : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">1..1</td><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a href=\"http://hl7.org/fhir/R4/datatypes.html#CodeableConcept\">CodeableConcept</a></td><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">Organization classification<br/><span style=\"font-weight:bold\">URL: </span><a href=\"StructureDefinition-hc-org-classification.html\">http://ns.electronichealth.net.au/hc/StructureDefinition/hc-org-classification</a><br class=\"binding\"/><span style=\"font-weight:bold\" title=\"null\" class=\"binding\">Binding: </span><a href=\"ValueSet-hc-org-classification-vs.html\" title=\"http://ns.electronichealth.net.au/hc/ValueSet/hc-org-classification-vs\" class=\"binding\">HcOrgClassVS (0.2.0-preview)</a><span title=\"null\" class=\"binding\"> (</span><a href=\"http://hl7.org/fhir/R4/terminologies.html#required\" title=\"To be conformant, the concept in this element SHALL be from the specified value set.\" class=\"binding\">required</a><span title=\"null\" class=\"binding\">)</span></td></tr>\r\n<tr><td colspan=\"5\" class=\"hierarchy\"><br/><a href=\"https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views\" title=\"Legend for this format\"><img src=\"data:image/png;base64, \" alt=\"doco\" style=\"background-color: inherit\"/> Documentation for this format</a></td></tr></table></div>"
      },
      "extension" : [
        {
          "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
          "valueCode" : "draft",
          "_valueCode" : {
            "extension" : [
              {
                "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
                "valueCanonical" : "http://ns.electronichealth.net.au/hc/ImplementationGuide/au.digitalhealth.r4.healthconnect"
              }
            ]
          }
        }
      ],
      "url" : "http://ns.electronichealth.net.au/hc/StructureDefinition/hc-hpio",
      "version" : "0.2.0-preview",
      "name" : "HCHPIOIdentifier",
      "title" : "HC Healthcare Provider Identifier - Organisation (HC HPI-O)",
      "status" : "draft",
      "experimental" : false,
      "date" : "2026-01-20T04:27:33+00:00",
      "publisher" : "Australian Digital Health Agency",
      "contact" : [
        {
          "name" : "Australian Digital Health Agency",
          "telecom" : [
            {
              "system" : "url",
              "value" : "https://www.digitalhealth.gov.au/"
            },
            {
              "system" : "email",
              "value" : "help@digitalhealth.gov.au"
            }
          ]
        },
        {
          "name" : "Australian Digital Health Agency",
          "telecom" : [
            {
              "system" : "email",
              "value" : "mailto:help@digitalhealth.gov.au",
              "use" : "work"
            }
          ]
        }
      ],
      "description" : "This identifier profile extends the AU HPI-O profile to include an organization classification extension to indicate whether the organization is a 'seed' or 'network' type.",
      "useContext" : [
        {
          "code" : {
            "system" : "http://terminology.hl7.org/CodeSystem/usage-context-type",
            "code" : "jurisdiction"
          },
          "valueCodeableConcept" : {
            "coding" : [
              {
                "system" : "urn:iso:std:iso:3166",
                "code" : "AU",
                "display" : "Australia"
              }
            ]
          }
        }
      ],
      "copyright" : "Copyright © 2025 Australian Digital Health Agency - All rights reserved. This content is licensed under a Creative Commons Attribution 4.0 International License. See https://creativecommons.org/licenses/by/4.0/.",
      "fhirVersion" : "4.0.1",
      "mapping" : [
        {
          "identity" : "v2",
          "uri" : "http://hl7.org/v2",
          "name" : "HL7 v2 Mapping"
        },
        {
          "identity" : "rim",
          "uri" : "http://hl7.org/v3",
          "name" : "RIM Mapping"
        },
        {
          "identity" : "servd",
          "uri" : "http://www.omg.org/spec/ServD/1.0/",
          "name" : "ServD"
        }
      ],
      "kind" : "complex-type",
      "abstract" : false,
      "type" : "Identifier",
      "baseDefinition" : "http://hl7.org.au/fhir/StructureDefinition/au-hpio|6.0.0",
      "derivation" : "constraint",
      "snapshot" : {
        "extension" : [
          {
            "url" : "http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version",
            "valueString" : "6.0.0"
          }
        ],
        "element" : [
          {
            "id" : "Identifier",
            "path" : "Identifier",
            "short" : "Healthcare Provider Identifier – Organisation (HPI-O)",
            "definition" : "Healthcare Provider Identifier – Organisation (HPI-O) assigned under the HI Service to an organisation (such as a hospital or medical clinic) where healthcare is provided.",
            "min" : 0,
            "max" : "*",
            "base" : {
              "path" : "Identifier",
              "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|4.0.1"
              },
              {
                "key" : "inv-hpio-0",
                "severity" : "error",
                "human" : "HPI-O shall be 16 digits",
                "expression" : "value.matches('^([0-9]{16})$')",
                "source" : "http://hl7.org.au/fhir/StructureDefinition/au-hpio|6.0.0"
              },
              {
                "key" : "inv-hpio-1",
                "severity" : "error",
                "human" : "HPI-O prefix shall be 800362",
                "expression" : "value.startsWith('800362')",
                "source" : "http://hl7.org.au/fhir/StructureDefinition/au-hpio|6.0.0"
              },
              {
                "key" : "inv-hpio-2",
                "severity" : "error",
                "human" : "HPI-O shall pass the Luhn algorithm check",
                "expression" : "(((select(value.substring(0,1).toInteger()).select(iif($this<5, $this*2, (($this*2)-9))))+(value.substring(1,1).toInteger())+(select(value.substring(2,1).toInteger()).select(iif($this<5, $this*2, (($this*2)-9))))+(value.substring(3,1).toInteger())+(select(value.substring(4,1).toInteger()).select(iif($this<5, $this*2, (($this*2)-9))))+(value.substring(5,1).toInteger())+(select(value.substring(6,1).toInteger()).select(iif($this<5, $this*2, (($this*2)-9))))+(value.substring(7,1).toInteger())+(select(value.substring(8,1).toInteger()).select(iif($this<5, $this*2, (($this*2)-9))))+(value.substring(9,1).toInteger())+(select(value.substring(10,1).toInteger()).select(iif($this<5, $this*2, (($this*2)-9))))+(value.substring(11,1).toInteger())+(select(value.substring(12,1).toInteger()).select(iif($this<5, $this*2, (($this*2)-9))))+(value.substring(13,1).toInteger())+(select(value.substring(14,1).toInteger()).select(iif($this<5, $this*2, (($this*2)-9))))+(value.substring(15,1).toInteger()))mod 10=0)",
                "source" : "http://hl7.org.au/fhir/StructureDefinition/au-hpio|6.0.0"
              }
            ],
            "isModifier" : false,
            "mapping" : [
              {
                "identity" : "rim",
                "map" : "n/a"
              },
              {
                "identity" : "v2",
                "map" : "CX / EI (occasionally, more often EI maps to a resource id or a URL)"
              },
              {
                "identity" : "rim",
                "map" : "II - The Identifier class is a little looser than the v3 type II because it allows URIs as well as registered OIDs or GUIDs.  Also maps to Role[classCode=IDENT]"
              },
              {
                "identity" : "servd",
                "map" : "Identifier"
              }
            ]
          },
          {
            "id" : "Identifier.id",
            "path" : "Identifier.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" : "Identifier.extension",
            "path" : "Identifier.extension",
            "slicing" : {
              "discriminator" : [
                {
                  "type" : "value",
                  "path" : "url"
                }
              ],
              "description" : "Extensions are always sliced by (at least) url",
              "rules" : "open"
            },
            "short" : "Extension",
            "definition" : "An Extension",
            "min" : 1,
            "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|4.0.1"
              },
              {
                "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|4.0.1"
              }
            ],
            "isModifier" : false,
            "isSummary" : false
          },
          {
            "id" : "Identifier.extension:HCOrgClassification",
            "path" : "Identifier.extension",
            "sliceName" : "HCOrgClassification",
            "short" : "Organization classification",
            "definition" : "Organization classification for HPI-O identifiers - can be 'seed' or 'network'.",
            "min" : 1,
            "max" : "1",
            "base" : {
              "path" : "Element.extension",
              "min" : 0,
              "max" : "*"
            },
            "type" : [
              {
                "code" : "Extension",
                "profile" : [
                  🔗 "http://ns.electronichealth.net.au/hc/StructureDefinition/hc-org-classification|0.2.0-preview"
                ]
              }
            ],
            "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|4.0.1"
              },
              {
                "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|4.0.1"
              }
            ],
            "mustSupport" : true,
            "isModifier" : false,
            "isSummary" : false
          },
          {
            "id" : "Identifier.use",
            "path" : "Identifier.use",
            "short" : "usual | official | temp | secondary | old (If known)",
            "definition" : "The purpose of this identifier.",
            "comment" : "Applications can assume that an identifier is permanent unless it explicitly says that it is temporary.",
            "requirements" : "Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers.",
            "min" : 0,
            "max" : "1",
            "base" : {
              "path" : "Identifier.use",
              "min" : 0,
              "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|4.0.1"
              }
            ],
            "isModifier" : true,
            "isModifierReason" : "This is labeled as \"Is Modifier\" because applications should not mistake a temporary id for a permanent one.",
            "isSummary" : true,
            "binding" : {
              "extension" : [
                {
                  "url" : "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
                  "valueString" : "IdentifierUse"
                }
              ],
              "strength" : "required",
              "description" : "Identifies the purpose for this identifier, if known .",
              "valueSet" : "http://hl7.org/fhir/ValueSet/identifier-use|4.0.1"
            },
            "mapping" : [
              {
                "identity" : "v2",
                "map" : "N/A"
              },
              {
                "identity" : "rim",
                "map" : "Role.code or implied by context"
              }
            ]
          },
          {
            "id" : "Identifier.type",
            "path" : "Identifier.type",
            "short" : "Description of identifier",
            "definition" : "A coded type for the identifier that can be used to determine which identifier to use for a specific purpose.",
            "comment" : "This element deals only with general categories of identifiers.  It SHOULD not be used for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into multiple categories due to common usage.   Where the system is known, a type is unnecessary because the type is always part of the system definition. However systems often need to handle identifiers where the system is not known. There is not a 1:1 relationship between type and system, since many different systems have the same type.",
            "requirements" : "Allows users to make use of identifiers when the identifier system is not known.",
            "min" : 1,
            "max" : "1",
            "base" : {
              "path" : "Identifier.type",
              "min" : 0,
              "max" : "1"
            },
            "type" : [
              {
                "code" : "CodeableConcept"
              }
            ],
            "patternCodeableConcept" : {
              "coding" : [
                {
                  "system" : "http://terminology.hl7.org.au/CodeSystem/v2-0203",
                  "code" : "NOI"
                }
              ]
            },
            "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|4.0.1"
              }
            ],
            "isModifier" : false,
            "isSummary" : true,
            "binding" : {
              "extension" : [
                {
                  "url" : "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
                  "valueString" : "IdentifierType"
                }
              ],
              "strength" : "extensible",
              "description" : "A coded type for an identifier that can be used to determine which identifier to use for a specific purpose.",
              "valueSet" : "http://hl7.org/fhir/ValueSet/identifier-type|4.0.1"
            },
            "mapping" : [
              {
                "identity" : "v2",
                "map" : "CX.5"
              },
              {
                "identity" : "rim",
                "map" : "Role.code or implied by context"
              }
            ]
          },
          {
            "id" : "Identifier.system",
            "path" : "Identifier.system",
            "short" : "The namespace for the identifier value",
            "definition" : "Establishes the namespace for the value - that is, a URL that describes a set values that are unique.",
            "comment" : "Identifier.system is always case sensitive.",
            "requirements" : "There are many sets  of identifiers.  To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers.",
            "min" : 1,
            "max" : "1",
            "base" : {
              "path" : "Identifier.system",
              "min" : 0,
              "max" : "1"
            },
            "type" : [
              {
                "code" : "uri"
              }
            ],
            "fixedUri" : "http://ns.electronichealth.net.au/id/hi/hpio/1.0",
            "example" : [
              {
                "label" : "General",
                "valueUri" : "http://www.acme.com/identifiers/patient"
              }
            ],
            "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|4.0.1"
              }
            ],
            "isModifier" : false,
            "isSummary" : true,
            "mapping" : [
              {
                "identity" : "v2",
                "map" : "CX.4 / EI-2-4"
              },
              {
                "identity" : "rim",
                "map" : "II.root or Role.id.root"
              },
              {
                "identity" : "servd",
                "map" : "./IdentifierType"
              }
            ]
          },
          {
            "id" : "Identifier.value",
            "path" : "Identifier.value",
            "short" : "HPI-O",
            "definition" : "The portion of the identifier typically relevant to the user and which is unique within the context of the system.",
            "comment" : "This concept is equivalent to Australian Institute of Health and Welfare data element 426830 [Healthcare provider—organisation identifier, N(16)](https://meteor.aihw.gov.au/content/index.phtml/itemId/426830).",
            "min" : 1,
            "max" : "1",
            "base" : {
              "path" : "Identifier.value",
              "min" : 0,
              "max" : "1"
            },
            "type" : [
              {
                "code" : "string"
              }
            ],
            "example" : [
              {
                "label" : "General",
                "valueString" : "123456"
              },
              {
                "label" : "HPI-O",
                "valueString" : "8003621566684455"
              }
            ],
            "maxLength" : 16,
            "condition" : [
              "inv-hpio-0",
              "inv-hpio-1",
              "inv-hpio-2"
            ],
            "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|4.0.1"
              }
            ],
            "isModifier" : false,
            "isSummary" : true,
            "mapping" : [
              {
                "identity" : "v2",
                "map" : "CX.1 / EI.1"
              },
              {
                "identity" : "rim",
                "map" : "II.extension or II.root if system indicates OID or GUID (Or Role.id.extension or root)"
              },
              {
                "identity" : "servd",
                "map" : "./Value"
              }
            ]
          },
          {
            "id" : "Identifier.period",
            "path" : "Identifier.period",
            "short" : "Time period when id is/was valid for use",
            "definition" : "Time period during which identifier is/was valid for use.",
            "min" : 0,
            "max" : "1",
            "base" : {
              "path" : "Identifier.period",
              "min" : 0,
              "max" : "1"
            },
            "type" : [
              {
                "code" : "Period"
              }
            ],
            "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|4.0.1"
              }
            ],
            "isModifier" : false,
            "isSummary" : true,
            "mapping" : [
              {
                "identity" : "v2",
                "map" : "CX.7 + CX.8"
              },
              {
                "identity" : "rim",
                "map" : "Role.effectiveTime or implied by context"
              },
              {
                "identity" : "servd",
                "map" : "./StartDate and ./EndDate"
              }
            ]
          },
          {
            "id" : "Identifier.assigner",
            "path" : "Identifier.assigner",
            "short" : "Organization that issued id (may be just text)",
            "definition" : "Organization that issued/manages the identifier.",
            "comment" : "The Identifier.assigner may omit the .reference element and only contain a .display element reflecting the name or other textual information about the assigning organization.",
            "min" : 0,
            "max" : "1",
            "base" : {
              "path" : "Identifier.assigner",
              "min" : 0,
              "max" : "1"
            },
            "type" : [
              {
                "code" : "Reference",
                "targetProfile" : [
                  🔗 "http://hl7.org/fhir/StructureDefinition/Organization|4.0.1"
                ]
              }
            ],
            "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|4.0.1"
              }
            ],
            "isModifier" : false,
            "isSummary" : true,
            "mapping" : [
              {
                "identity" : "v2",
                "map" : "CX.4 / (CX.4,CX.9,CX.10)"
              },
              {
                "identity" : "rim",
                "map" : "II.assigningAuthorityName but note that this is an improper use by the definition of the field.  Also Role.scoper"
              },
              {
                "identity" : "servd",
                "map" : "./IdentifierIssuingAuthority"
              }
            ]
          }
        ]
      },
      "differential" : {
        "element" : [
          {
            "id" : "Identifier",
            "path" : "Identifier"
          },
          {
            "id" : "Identifier.extension",
            "path" : "Identifier.extension",
            "min" : 1
          },
          {
            "id" : "Identifier.extension:HCOrgClassification",
            "path" : "Identifier.extension",
            "sliceName" : "HCOrgClassification",
            "short" : "Organization classification",
            "definition" : "Organization classification for HPI-O identifiers - can be 'seed' or 'network'.",
            "min" : 1,
            "max" : "1",
            "type" : [
              {
                "code" : "Extension",
                "profile" : [
                  🔗 "http://ns.electronichealth.net.au/hc/StructureDefinition/hc-org-classification|0.2.0-preview"
                ]
              }
            ],
            "mustSupport" : true
          }
        ]
      }
    }