FHIR Extensions Pack
5.2.0-ballot - 5.2.0 Ballot - September 2024)
FHIR Extensions Pack
5.2.0-ballot - 5.2.0 Ballot - September 2024)
FHIR Extensions Pack, published by HL7 International / FHIR Infrastructure. This guide is not an authorized publication; it is the continuous build for version 5.2.0-ballot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/fhir-extensions/ and changes regularly. See the Directory of published versions
| Page standards status: Trial-use | Maturity Level: 3 |
TTL representation of the capabilitystatement-search-parameter-combination extension.
@prefix fhir: <http://hl7.org/fhir/> . @prefix owl: <http://www.w3.org/2002/07/owl#> . @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . @prefix xsd: <http://www.w3.org/2001/XMLSchema#> . # - resource ------------------------------------------------------------------- a fhir:StructureDefinition ; fhir:nodeRole fhir:treeRoot ; fhir:id [ fhir:v "capabilitystatement-search-parameter-combination"] ; # fhir:text [ fhir:status [ fhir:v "extensions" ] ; fhir:div "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: StructureDefinition capabilitystatement-search-parameter-combination</b></p><a name=\"capabilitystatement-search-parameter-combination\"> </a><a name=\"hccapabilitystatement-search-parameter-combination\"> </a><a name=\"capabilitystatement-search-parameter-combination-en-US\"> </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 : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" 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 : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" 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 : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" 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=\"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 : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a href=\"https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views\" title=\"Additional information about the element\">Description & 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,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\" 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 : 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-capabilitystatement-search-parameter-combination-definitions.html#Extension\" title=\"This extension defines a possible search parameter combination by listing a set of search parameters and indicating whether they are required or optional.\n- If a search combination is specified, clients should expect that they must submit a search that meets one of the required combinations or the search will be unsuccessful.\n- If multiple search parameter combinations are specified, a client may pick between them, and supply the minimal required parameters for any of the combinations.\n- If no parameters in the set of search parameters are listed as required, then *at least one* of the listed optional parameters must be present. This shorthand method is the same as repeating the entire extension for each combination of optional and required search parameters.\">Extension</a><a name=\"Extension\"> </a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">0..*</td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a href=\"http://hl7.org/fhir/R5/extensibility.html#Extension\">Extension</a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">An allowable parameter combination<br/></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 : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck13.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_slice.png\" alt=\".\" style=\"background-color: #F7F7F7; background-color: inherit\" title=\"Slice Definition\" class=\"hierarchy\"/> Slices for extension<a name=\"Extension.extension\"> </a></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; 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: white\"><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck135.png)\" class=\"hierarchy\"><img src=\"tbl_spacer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vline.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vjoin_slicer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"icon_slice_item.png\" alt=\".\" style=\"background-color: white; background-color: inherit\" title=\"Slice Item\" class=\"hierarchy\"/> <a href=\"StructureDefinition-capabilitystatement-search-parameter-combination-definitions.html#Extension.extension:required\" title=\"Slice required: A search parameter name in the combination which is required.\">extension:required</a><a name=\"Extension.extension.2\"> </a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">0..*</td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a href=\"http://hl7.org/fhir/R5/extensibility.html#Extension\">Extension</a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">A required search parameter name<br/></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 : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck1350.png)\" class=\"hierarchy\"><img src=\"tbl_spacer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vline.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vline_slicer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vjoin_slice.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\"/> <span style=\"text-decoration:line-through\">extension</span><a name=\"Extension.extension.extension\"> </a></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"text-decoration:line-through\"/><span style=\"text-decoration:line-through\">0</span><span style=\"text-decoration:line-through\">..</span><span style=\"text-decoration:line-through\">0</span></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/></tr>\r\n<tr style=\"border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white\"><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck1350.png)\" class=\"hierarchy\"><img src=\"tbl_spacer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vline.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vline_slicer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vjoin_slice.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"icon_primitive.png\" alt=\".\" style=\"background-color: white; background-color: inherit\" title=\"Primitive Data Type\" class=\"hierarchy\"/> <a href=\"StructureDefinition-capabilitystatement-search-parameter-combination-definitions.html#Extension.extension:required.url\">url</a><a name=\"Extension.extension.url\"> </a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"opacity: 0.5\">1</span><span style=\"opacity: 0.5\">..</span><span style=\"opacity: 0.5\">1</span></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a href=\"http://hl7.org/fhir/R5/datatypes.html#uri\">uri</a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"color: darkgreen\">"required"</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 : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck1340.png)\" class=\"hierarchy\"><img src=\"tbl_spacer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vline.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vline_slicer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vjoin_end_slice.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"icon_primitive.png\" alt=\".\" style=\"background-color: #F7F7F7; background-color: inherit\" title=\"Primitive Data Type\" class=\"hierarchy\"/> <a href=\"StructureDefinition-capabilitystatement-search-parameter-combination-definitions.html#Extension.extension:required.value[x]\">value[x]</a><a name=\"Extension.extension.value_x_\"> </a></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">1..<span style=\"opacity: 0.5\">1</span></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a href=\"http://hl7.org/fhir/R5/datatypes.html#string\">string</a></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"opacity: 0.5\">Value of 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 : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck125.png)\" class=\"hierarchy\"><img src=\"tbl_spacer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vline.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: white; background-color: inherit\" title=\"Slice Item\" class=\"hierarchy\"/> <a href=\"StructureDefinition-capabilitystatement-search-parameter-combination-definitions.html#Extension.extension:optional\" title=\"Slice optional: A search parameter name in the combination which is optional.\">extension:optional</a><a name=\"Extension.extension.3\"> </a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">0..*</td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a href=\"http://hl7.org/fhir/R5/extensibility.html#Extension\">Extension</a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">An optional search parameter name<br/></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 : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck1250.png)\" class=\"hierarchy\"><img src=\"tbl_spacer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vline.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_blank.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vjoin_slice.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\"/> <span style=\"text-decoration:line-through\">extension</span><a name=\"Extension.extension.extension.2\"> </a></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"text-decoration:line-through\"/><span style=\"text-decoration:line-through\">0</span><span style=\"text-decoration:line-through\">..</span><span style=\"text-decoration:line-through\">0</span></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/></tr>\r\n<tr style=\"border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white\"><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck1250.png)\" class=\"hierarchy\"><img src=\"tbl_spacer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vline.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_blank.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vjoin_slice.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"icon_primitive.png\" alt=\".\" style=\"background-color: white; background-color: inherit\" title=\"Primitive Data Type\" class=\"hierarchy\"/> <a href=\"StructureDefinition-capabilitystatement-search-parameter-combination-definitions.html#Extension.extension:optional.url\">url</a><a name=\"Extension.extension.url.2\"> </a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"opacity: 0.5\">1</span><span style=\"opacity: 0.5\">..</span><span style=\"opacity: 0.5\">1</span></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a href=\"http://hl7.org/fhir/R5/datatypes.html#uri\">uri</a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"color: darkgreen\">"optional"</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 : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck1240.png)\" class=\"hierarchy\"><img src=\"tbl_spacer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vline.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_slice.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"icon_primitive.png\" alt=\".\" style=\"background-color: #F7F7F7; background-color: inherit\" title=\"Primitive Data Type\" class=\"hierarchy\"/> <a href=\"StructureDefinition-capabilitystatement-search-parameter-combination-definitions.html#Extension.extension:optional.value[x]\">value[x]</a><a name=\"Extension.extension.value_x_.2\"> </a></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">1..<span style=\"opacity: 0.5\">1</span></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a href=\"http://hl7.org/fhir/R5/datatypes.html#string\">string</a></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"opacity: 0.5\">Value of 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 : left; background-color: white; 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_element.gif\" alt=\".\" style=\"background-color: white; background-color: inherit\" title=\"Element\" class=\"hierarchy\"/> <a href=\"StructureDefinition-capabilitystatement-search-parameter-combination-definitions.html#Extension.url\">url</a><a name=\"Extension.url\"> </a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"opacity: 0.5\">1</span><span style=\"opacity: 0.5\">..</span><span style=\"opacity: 0.5\">1</span></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a style=\"opacity: 0.5\" href=\"http://hl7.org/fhir/R5/datatypes.html#uri\">uri</a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"color: darkgreen\">"http://hl7.org/fhir/StructureDefinition/capabilitystatement-search-parameter-combination"</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 : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck00.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_element.gif\" alt=\".\" style=\"background-color: #F7F7F7; background-color: inherit\" title=\"Element\" class=\"hierarchy\"/> <span style=\"text-decoration:line-through\">value[x]</span><a name=\"Extension.value_x_\"> </a></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"text-decoration:line-through\"/><span style=\"text-decoration:line-through\">0</span><span style=\"text-decoration:line-through\">..</span><span style=\"text-decoration:line-through\">0</span></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/></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,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\" alt=\"doco\" style=\"background-color: inherit\"/> Documentation for this format</a></td></tr></table></div>" ] ; # fhir:extension ( [ fhir:url [ fhir:v "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg"^^xsd:anyURI ] ; fhir:value [ fhir:v "fhir" ] ] [ fhir:url [ fhir:v "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm"^^xsd:anyURI ] ; fhir:value [ fhir:v "3"^^xsd:integer ] ] [ fhir:url [ fhir:v "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status"^^xsd:anyURI ] ; fhir:value [ fhir:v "trial-use" ] ] [ fhir:url [ fhir:v "http://hl7.org/fhir/StructureDefinition/structuredefinition-type-characteristics"^^xsd:anyURI ] ; fhir:value [ fhir:v "can-bind" ] ] ) ; # fhir:url [ fhir:v "http://hl7.org/fhir/StructureDefinition/capabilitystatement-search-parameter-combination"^^xsd:anyURI] ; # fhir:identifier ( [ fhir:system [ fhir:v "urn:ietf:rfc:3986"^^xsd:anyURI ] ; fhir:value [ fhir:v "urn:oid:2.16.840.1.113883.4.642.5.1044" ] ] ) ; # fhir:version [ fhir:v "5.2.0-ballot"] ; # fhir:name [ fhir:v "CSSearchParameterCombination"] ; # fhir:title [ fhir:v "CapabilityStatement Search Parameter Combination"] ; # fhir:status [ fhir:v "active"] ; # fhir:experimental [ fhir:v "false"^^xsd:boolean] ; # fhir:date [ fhir:v "2022-08-15"^^xsd:date] ; # fhir:publisher [ fhir:v "HL7 International / FHIR Infrastructure"] ; # fhir:contact ( [ ( fhir:telecom [ fhir:system [ fhir:v "url" ] ; fhir:value [ fhir:v "http://www.hl7.org/Special/committees/fiwg" ] ] ) ] ) ; # fhir:description [ fhir:v "This extension defines a possible search parameter combination by listing a set of search parameters and indicating whether they are required or optional.\n- If a search combination is specified, clients should expect that they must submit a search that meets one of the required combinations or the search will be unsuccessful.\n- If multiple search parameter combinations are specified, a client may pick between them, and supply the minimal required parameters for any of the combinations.\n- If no parameters in the set of search parameters are listed as required, then *at least one* of the listed optional parameters must be present. This shorthand method is the same as repeating the entire extension for each combination of optional and required search parameters."] ; # fhir:jurisdiction ( [ ( fhir:coding [ fhir:system [ fhir:v "http://unstats.un.org/unsd/methods/m49/m49.htm"^^xsd:anyURI ] ; fhir:code [ fhir:v "001" ] ] ) ] ) ; # fhir:fhirVersion [ fhir:v "5.0.0"] ; # fhir:mapping ( [ fhir:identity [ fhir:v "v2" ] ; fhir:uri [ fhir:v "http://hl7.org/v2"^^xsd:anyURI ] ; fhir:name [ fhir:v "HL7 v2 Mapping" ] ] [ fhir:identity [ fhir:v "rim" ] ; fhir:uri [ fhir:v "http://hl7.org/v3"^^xsd:anyURI ] ; fhir:name [ fhir:v "RIM Mapping" ] ] ) ; # fhir:kind [ fhir:v "complex-type"] ; # fhir:abstract [ fhir:v "false"^^xsd:boolean] ; # fhir:context ( [ fhir:type [ fhir:v "element" ] ; fhir:expression [ fhir:v "CapabilityStatement.rest.resource" ] ] ) ; # fhir:type [ fhir:v "Extension"^^xsd:anyURI] ; # fhir:baseDefinition [ fhir:v "http://hl7.org/fhir/StructureDefinition/Extension"^^xsd:anyURI ; fhir:link <http://hl7.org/fhir/StructureDefinition/Extension> ] ; # fhir:derivation [ fhir:v "constraint"] ; # fhir:snapshot [ ( fhir:element [ fhir:id [ fhir:v "Extension" ] ; fhir:path [ fhir:v "Extension" ] ; fhir:short [ fhir:v "An allowable parameter combination" ] ; fhir:definition [ fhir:v "This extension defines a possible search parameter combination by listing a set of search parameters and indicating whether they are required or optional.\n- If a search combination is specified, clients should expect that they must submit a search that meets one of the required combinations or the search will be unsuccessful.\n- If multiple search parameter combinations are specified, a client may pick between them, and supply the minimal required parameters for any of the combinations.\n- If no parameters in the set of search parameters are listed as required, then *at least one* of the listed optional parameters must be present. This shorthand method is the same as repeating the entire extension for each combination of optional and required search parameters." ] ; fhir:comment [ fhir:v "For example, on the Patient Resource you could use this to state support for searching by Patient.name and Patient.gender is required." ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "*" ] ; fhir:base [ fhir:path [ fhir:v "Extension" ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "*" ] ] ; ( fhir:constraint [ fhir:key [ fhir:v "ele-1" ] ; fhir:severity [ fhir:v "error" ] ; fhir:human [ fhir:v "All FHIR elements must have a @value or children" ] ; fhir:expression [ fhir:v "hasValue() or (children().count() > id.count())" ] ; fhir:source [ fhir:v "http://hl7.org/fhir/StructureDefinition/Element"^^xsd:anyURI ; fhir:link <http://hl7.org/fhir/StructureDefinition/Element> ] ] [ fhir:key [ fhir:v "ext-1" ] ; fhir:severity [ fhir:v "error" ] ; fhir:human [ fhir:v "Must have either extensions or value[x], not both" ] ; fhir:expression [ fhir:v "extension.exists() != value.exists()" ] ; fhir:source [ fhir:v "http://hl7.org/fhir/StructureDefinition/Extension"^^xsd:anyURI ; fhir:link <http://hl7.org/fhir/StructureDefinition/Extension> ] ] ) ; fhir:isModifier [ fhir:v "false"^^xsd:boolean ] ; ( fhir:mapping [ fhir:identity [ fhir:v "v2" ] ; fhir:map [ fhir:v "N/A" ] ] [ fhir:identity [ fhir:v "rim" ] ; fhir:map [ fhir:v "N/A" ] ] ) ] [ fhir:id [ fhir:v "Extension.id" ] ; fhir:path [ fhir:v "Extension.id" ] ; ( fhir:representation [ fhir:v "xmlAttr" ] ) ; fhir:short [ fhir:v "Unique id for inter-element referencing" ] ; fhir:definition [ fhir:v "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "1" ] ; fhir:base [ fhir:path [ fhir:v "Element.id" ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "1" ] ] ; ( fhir:type [ ( fhir:extension [ fhir:url [ fhir:v "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type"^^xsd:anyURI ] ; fhir:value [ fhir:v "id"^^xsd:anyURI ] ] ) ; fhir:code [ fhir:v "http://hl7.org/fhirpath/System.String"^^xsd:anyURI ] ] ) ; ( fhir:condition [ fhir:v "ele-1" ] ) ; fhir:isModifier [ fhir:v "false"^^xsd:boolean ] ; fhir:isSummary [ fhir:v "false"^^xsd:boolean ] ; ( fhir:mapping [ fhir:identity [ fhir:v "rim" ] ; fhir:map [ fhir:v "n/a" ] ] ) ] [ fhir:id [ fhir:v "Extension.extension" ] ; fhir:path [ fhir:v "Extension.extension" ] ; fhir:slicing [ ( fhir:discriminator [ fhir:type [ fhir:v "value" ] ; fhir:path [ fhir:v "url" ] ] ) ; fhir:description [ fhir:v "Extensions are always sliced by (at least) url" ] ; fhir:rules [ fhir:v "open" ] ] ; fhir:short [ fhir:v "Additional content defined by implementations" ] ; fhir:definition [ fhir:v "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension." ] ; fhir:comment [ fhir:v "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." ] ; ( fhir:alias [ fhir:v "extensions" ] [ fhir:v "user content" ] ) ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "*" ] ; fhir:base [ fhir:path [ fhir:v "Element.extension" ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "*" ] ] ; ( fhir:type [ fhir:code [ fhir:v "Extension"^^xsd:anyURI ] ] ) ; ( fhir:constraint [ fhir:key [ fhir:v "ele-1" ] ; fhir:severity [ fhir:v "error" ] ; fhir:human [ fhir:v "All FHIR elements must have a @value or children" ] ; fhir:expression [ fhir:v "hasValue() or (children().count() > id.count())" ] ; fhir:source [ fhir:v "http://hl7.org/fhir/StructureDefinition/Element"^^xsd:anyURI ; fhir:link <http://hl7.org/fhir/StructureDefinition/Element> ] ] [ fhir:key [ fhir:v "ext-1" ] ; fhir:severity [ fhir:v "error" ] ; fhir:human [ fhir:v "Must have either extensions or value[x], not both" ] ; fhir:expression [ fhir:v "extension.exists() != value.exists()" ] ; fhir:source [ fhir:v "http://hl7.org/fhir/StructureDefinition/Extension"^^xsd:anyURI ; fhir:link <http://hl7.org/fhir/StructureDefinition/Extension> ] ] ) ; fhir:isModifier [ fhir:v "false"^^xsd:boolean ] ; fhir:isSummary [ fhir:v "false"^^xsd:boolean ] ; ( fhir:mapping [ fhir:identity [ fhir:v "rim" ] ; fhir:map [ fhir:v "n/a" ] ] ) ] [ fhir:id [ fhir:v "Extension.extension:required" ] ; fhir:path [ fhir:v "Extension.extension" ] ; fhir:sliceName [ fhir:v "required" ] ; fhir:short [ fhir:v "A required search parameter name" ] ; fhir:definition [ fhir:v "A search parameter name in the combination which is required." ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "*" ] ; fhir:base [ fhir:path [ fhir:v "Element.extension" ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "*" ] ] ; ( fhir:type [ fhir:code [ fhir:v "Extension"^^xsd:anyURI ] ] ) ; ( fhir:constraint [ fhir:key [ fhir:v "ele-1" ] ; fhir:severity [ fhir:v "error" ] ; fhir:human [ fhir:v "All FHIR elements must have a @value or children" ] ; fhir:expression [ fhir:v "hasValue() or (children().count() > id.count())" ] ; fhir:source [ fhir:v "http://hl7.org/fhir/StructureDefinition/Element"^^xsd:anyURI ; fhir:link <http://hl7.org/fhir/StructureDefinition/Element> ] ] [ fhir:key [ fhir:v "ext-1" ] ; fhir:severity [ fhir:v "error" ] ; fhir:human [ fhir:v "Must have either extensions or value[x], not both" ] ; fhir:expression [ fhir:v "extension.exists() != value.exists()" ] ; fhir:source [ fhir:v "http://hl7.org/fhir/StructureDefinition/Extension"^^xsd:anyURI ; fhir:link <http://hl7.org/fhir/StructureDefinition/Extension> ] ] ) ; fhir:isModifier [ fhir:v "false"^^xsd:boolean ] ; fhir:isSummary [ fhir:v "false"^^xsd:boolean ] ; ( fhir:mapping [ fhir:identity [ fhir:v "v2" ] ; fhir:map [ fhir:v "N/A" ] ] [ fhir:identity [ fhir:v "rim" ] ; fhir:map [ fhir:v "N/A" ] ] ) ] [ fhir:id [ fhir:v "Extension.extension:required.id" ] ; fhir:path [ fhir:v "Extension.extension.id" ] ; ( fhir:representation [ fhir:v "xmlAttr" ] ) ; fhir:short [ fhir:v "Unique id for inter-element referencing" ] ; fhir:definition [ fhir:v "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "1" ] ; fhir:base [ fhir:path [ fhir:v "Element.id" ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "1" ] ] ; ( fhir:type [ ( fhir:extension [ fhir:url [ fhir:v "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type"^^xsd:anyURI ] ; fhir:value [ fhir:v "id"^^xsd:anyURI ] ] ) ; fhir:code [ fhir:v "http://hl7.org/fhirpath/System.String"^^xsd:anyURI ] ] ) ; ( fhir:condition [ fhir:v "ele-1" ] ) ; fhir:isModifier [ fhir:v "false"^^xsd:boolean ] ; fhir:isSummary [ fhir:v "false"^^xsd:boolean ] ; ( fhir:mapping [ fhir:identity [ fhir:v "rim" ] ; fhir:map [ fhir:v "n/a" ] ] ) ] [ fhir:id [ fhir:v "Extension.extension:required.extension" ] ; fhir:path [ fhir:v "Extension.extension.extension" ] ; fhir:slicing [ ( fhir:discriminator [ fhir:type [ fhir:v "value" ] ; fhir:path [ fhir:v "url" ] ] ) ; fhir:description [ fhir:v "Extensions are always sliced by (at least) url" ] ; fhir:rules [ fhir:v "open" ] ] ; fhir:short [ fhir:v "Extension" ] ; fhir:definition [ fhir:v "An Extension" ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "0" ] ; fhir:base [ fhir:path [ fhir:v "Element.extension" ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "*" ] ] ; ( fhir:type [ fhir:code [ fhir:v "Extension"^^xsd:anyURI ] ] ) ; ( fhir:constraint [ fhir:key [ fhir:v "ele-1" ] ; fhir:severity [ fhir:v "error" ] ; fhir:human [ fhir:v "All FHIR elements must have a @value or children" ] ; fhir:expression [ fhir:v "hasValue() or (children().count() > id.count())" ] ; fhir:source [ fhir:v "http://hl7.org/fhir/StructureDefinition/Element"^^xsd:anyURI ; fhir:link <http://hl7.org/fhir/StructureDefinition/Element> ] ] [ fhir:key [ fhir:v "ext-1" ] ; fhir:severity [ fhir:v "error" ] ; fhir:human [ fhir:v "Must have either extensions or value[x], not both" ] ; fhir:expression [ fhir:v "extension.exists() != value.exists()" ] ; fhir:source [ fhir:v "http://hl7.org/fhir/StructureDefinition/Extension"^^xsd:anyURI ; fhir:link <http://hl7.org/fhir/StructureDefinition/Extension> ] ] ) ; fhir:isModifier [ fhir:v "false"^^xsd:boolean ] ; fhir:isSummary [ fhir:v "false"^^xsd:boolean ] ] [ fhir:id [ fhir:v "Extension.extension:required.url" ] ; fhir:path [ fhir:v "Extension.extension.url" ] ; ( fhir:representation [ fhir:v "xmlAttr" ] ) ; fhir:short [ fhir:v "identifies the meaning of the extension" ] ; fhir:definition [ fhir:v "Source of the definition for the extension code - a logical name or a URL." ] ; fhir:comment [ fhir:v "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." ] ; fhir:min [ fhir:v "1"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "1" ] ; fhir:base [ fhir:path [ fhir:v "Extension.url" ] ; fhir:min [ fhir:v "1"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "1" ] ] ; ( fhir:type [ fhir:code [ fhir:v "uri"^^xsd:anyURI ] ] ) ; fhir:fixed [ fhir:v "required"^^xsd:anyURI ] ; fhir:isModifier [ fhir:v "false"^^xsd:boolean ] ; fhir:isSummary [ fhir:v "false"^^xsd:boolean ] ; ( fhir:mapping [ fhir:identity [ fhir:v "rim" ] ; fhir:map [ fhir:v "N/A" ] ] ) ] [ fhir:id [ fhir:v "Extension.extension:required.value[x]" ] ; fhir:path [ fhir:v "Extension.extension.value[x]" ] ; fhir:short [ fhir:v "Value of extension" ] ; fhir:definition [ fhir:v "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)." ] ; fhir:min [ fhir:v "1"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "1" ] ; fhir:base [ fhir:path [ fhir:v "Extension.value[x]" ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "1" ] ] ; ( fhir:type [ fhir:code [ fhir:v "string"^^xsd:anyURI ] ] ) ; ( fhir:condition [ fhir:v "ext-1" ] ) ; ( fhir:constraint [ fhir:key [ fhir:v "ele-1" ] ; fhir:severity [ fhir:v "error" ] ; fhir:human [ fhir:v "All FHIR elements must have a @value or children" ] ; fhir:expression [ fhir:v "hasValue() or (children().count() > id.count())" ] ; fhir:source [ fhir:v "http://hl7.org/fhir/StructureDefinition/Element"^^xsd:anyURI ; fhir:link <http://hl7.org/fhir/StructureDefinition/Element> ] ] ) ; fhir:isModifier [ fhir:v "false"^^xsd:boolean ] ; fhir:isSummary [ fhir:v "false"^^xsd:boolean ] ; ( fhir:mapping [ fhir:identity [ fhir:v "rim" ] ; fhir:map [ fhir:v "N/A" ] ] ) ] [ fhir:id [ fhir:v "Extension.extension:optional" ] ; fhir:path [ fhir:v "Extension.extension" ] ; fhir:sliceName [ fhir:v "optional" ] ; fhir:short [ fhir:v "An optional search parameter name" ] ; fhir:definition [ fhir:v "A search parameter name in the combination which is optional." ] ; fhir:comment [ fhir:v "If a defined parameter is not listed as a required or optional parameter, the implication is that the parameter is not supported with this combination. Servers may ignore It, though some may return an error if it is used." ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "*" ] ; fhir:base [ fhir:path [ fhir:v "Element.extension" ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "*" ] ] ; ( fhir:type [ fhir:code [ fhir:v "Extension"^^xsd:anyURI ] ] ) ; ( fhir:constraint [ fhir:key [ fhir:v "ele-1" ] ; fhir:severity [ fhir:v "error" ] ; fhir:human [ fhir:v "All FHIR elements must have a @value or children" ] ; fhir:expression [ fhir:v "hasValue() or (children().count() > id.count())" ] ; fhir:source [ fhir:v "http://hl7.org/fhir/StructureDefinition/Element"^^xsd:anyURI ; fhir:link <http://hl7.org/fhir/StructureDefinition/Element> ] ] [ fhir:key [ fhir:v "ext-1" ] ; fhir:severity [ fhir:v "error" ] ; fhir:human [ fhir:v "Must have either extensions or value[x], not both" ] ; fhir:expression [ fhir:v "extension.exists() != value.exists()" ] ; fhir:source [ fhir:v "http://hl7.org/fhir/StructureDefinition/Extension"^^xsd:anyURI ; fhir:link <http://hl7.org/fhir/StructureDefinition/Extension> ] ] ) ; fhir:isModifier [ fhir:v "false"^^xsd:boolean ] ; fhir:isSummary [ fhir:v "false"^^xsd:boolean ] ; ( fhir:mapping [ fhir:identity [ fhir:v "v2" ] ; fhir:map [ fhir:v "N/A" ] ] [ fhir:identity [ fhir:v "rim" ] ; fhir:map [ fhir:v "N/A" ] ] ) ] [ fhir:id [ fhir:v "Extension.extension:optional.id" ] ; fhir:path [ fhir:v "Extension.extension.id" ] ; ( fhir:representation [ fhir:v "xmlAttr" ] ) ; fhir:short [ fhir:v "Unique id for inter-element referencing" ] ; fhir:definition [ fhir:v "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "1" ] ; fhir:base [ fhir:path [ fhir:v "Element.id" ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "1" ] ] ; ( fhir:type [ ( fhir:extension [ fhir:url [ fhir:v "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type"^^xsd:anyURI ] ; fhir:value [ fhir:v "id"^^xsd:anyURI ] ] ) ; fhir:code [ fhir:v "http://hl7.org/fhirpath/System.String"^^xsd:anyURI ] ] ) ; ( fhir:condition [ fhir:v "ele-1" ] ) ; fhir:isModifier [ fhir:v "false"^^xsd:boolean ] ; fhir:isSummary [ fhir:v "false"^^xsd:boolean ] ; ( fhir:mapping [ fhir:identity [ fhir:v "rim" ] ; fhir:map [ fhir:v "n/a" ] ] ) ] [ fhir:id [ fhir:v "Extension.extension:optional.extension" ] ; fhir:path [ fhir:v "Extension.extension.extension" ] ; fhir:slicing [ ( fhir:discriminator [ fhir:type [ fhir:v "value" ] ; fhir:path [ fhir:v "url" ] ] ) ; fhir:description [ fhir:v "Extensions are always sliced by (at least) url" ] ; fhir:rules [ fhir:v "open" ] ] ; fhir:short [ fhir:v "Extension" ] ; fhir:definition [ fhir:v "An Extension" ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "0" ] ; fhir:base [ fhir:path [ fhir:v "Element.extension" ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "*" ] ] ; ( fhir:type [ fhir:code [ fhir:v "Extension"^^xsd:anyURI ] ] ) ; ( fhir:constraint [ fhir:key [ fhir:v "ele-1" ] ; fhir:severity [ fhir:v "error" ] ; fhir:human [ fhir:v "All FHIR elements must have a @value or children" ] ; fhir:expression [ fhir:v "hasValue() or (children().count() > id.count())" ] ; fhir:source [ fhir:v "http://hl7.org/fhir/StructureDefinition/Element"^^xsd:anyURI ; fhir:link <http://hl7.org/fhir/StructureDefinition/Element> ] ] [ fhir:key [ fhir:v "ext-1" ] ; fhir:severity [ fhir:v "error" ] ; fhir:human [ fhir:v "Must have either extensions or value[x], not both" ] ; fhir:expression [ fhir:v "extension.exists() != value.exists()" ] ; fhir:source [ fhir:v "http://hl7.org/fhir/StructureDefinition/Extension"^^xsd:anyURI ; fhir:link <http://hl7.org/fhir/StructureDefinition/Extension> ] ] ) ; fhir:isModifier [ fhir:v "false"^^xsd:boolean ] ; fhir:isSummary [ fhir:v "false"^^xsd:boolean ] ] [ fhir:id [ fhir:v "Extension.extension:optional.url" ] ; fhir:path [ fhir:v "Extension.extension.url" ] ; ( fhir:representation [ fhir:v "xmlAttr" ] ) ; fhir:short [ fhir:v "identifies the meaning of the extension" ] ; fhir:definition [ fhir:v "Source of the definition for the extension code - a logical name or a URL." ] ; fhir:comment [ fhir:v "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." ] ; fhir:min [ fhir:v "1"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "1" ] ; fhir:base [ fhir:path [ fhir:v "Extension.url" ] ; fhir:min [ fhir:v "1"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "1" ] ] ; ( fhir:type [ fhir:code [ fhir:v "uri"^^xsd:anyURI ] ] ) ; fhir:fixed [ fhir:v "optional"^^xsd:anyURI ] ; fhir:isModifier [ fhir:v "false"^^xsd:boolean ] ; fhir:isSummary [ fhir:v "false"^^xsd:boolean ] ; ( fhir:mapping [ fhir:identity [ fhir:v "rim" ] ; fhir:map [ fhir:v "N/A" ] ] ) ] [ fhir:id [ fhir:v "Extension.extension:optional.value[x]" ] ; fhir:path [ fhir:v "Extension.extension.value[x]" ] ; fhir:short [ fhir:v "Value of extension" ] ; fhir:definition [ fhir:v "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)." ] ; fhir:min [ fhir:v "1"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "1" ] ; fhir:base [ fhir:path [ fhir:v "Extension.value[x]" ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "1" ] ] ; ( fhir:type [ fhir:code [ fhir:v "string"^^xsd:anyURI ] ] ) ; ( fhir:condition [ fhir:v "ext-1" ] ) ; ( fhir:constraint [ fhir:key [ fhir:v "ele-1" ] ; fhir:severity [ fhir:v "error" ] ; fhir:human [ fhir:v "All FHIR elements must have a @value or children" ] ; fhir:expression [ fhir:v "hasValue() or (children().count() > id.count())" ] ; fhir:source [ fhir:v "http://hl7.org/fhir/StructureDefinition/Element"^^xsd:anyURI ; fhir:link <http://hl7.org/fhir/StructureDefinition/Element> ] ] ) ; fhir:isModifier [ fhir:v "false"^^xsd:boolean ] ; fhir:isSummary [ fhir:v "false"^^xsd:boolean ] ; ( fhir:mapping [ fhir:identity [ fhir:v "rim" ] ; fhir:map [ fhir:v "N/A" ] ] ) ] [ fhir:id [ fhir:v "Extension.url" ] ; fhir:path [ fhir:v "Extension.url" ] ; ( fhir:representation [ fhir:v "xmlAttr" ] ) ; fhir:short [ fhir:v "identifies the meaning of the extension" ] ; fhir:definition [ fhir:v "Source of the definition for the extension code - a logical name or a URL." ] ; fhir:comment [ fhir:v "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." ] ; fhir:min [ fhir:v "1"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "1" ] ; fhir:base [ fhir:path [ fhir:v "Extension.url" ] ; fhir:min [ fhir:v "1"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "1" ] ] ; ( fhir:type [ ( fhir:extension [ fhir:url [ fhir:v "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type"^^xsd:anyURI ] ; fhir:value [ fhir:v "uri"^^xsd:anyURI ] ] ) ; fhir:code [ fhir:v "http://hl7.org/fhirpath/System.String"^^xsd:anyURI ] ] ) ; fhir:fixed [ fhir:v "http://hl7.org/fhir/StructureDefinition/capabilitystatement-search-parameter-combination"^^xsd:anyURI ] ; fhir:isModifier [ fhir:v "false"^^xsd:boolean ] ; fhir:isSummary [ fhir:v "false"^^xsd:boolean ] ; ( fhir:mapping [ fhir:identity [ fhir:v "rim" ] ; fhir:map [ fhir:v "N/A" ] ] ) ] [ fhir:id [ fhir:v "Extension.value[x]" ] ; fhir:path [ fhir:v "Extension.value[x]" ] ; fhir:short [ fhir:v "Value of extension" ] ; fhir:definition [ fhir:v "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)." ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "0" ] ; fhir:base [ fhir:path [ fhir:v "Extension.value[x]" ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "1" ] ] ; ( fhir:type [ fhir:code [ fhir:v "base64Binary"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "boolean"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "canonical"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "code"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "date"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "dateTime"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "decimal"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "id"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "instant"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "integer"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "integer64"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "markdown"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "oid"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "positiveInt"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "string"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "time"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "unsignedInt"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "uri"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "url"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "uuid"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "Address"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "Age"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "Annotation"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "Attachment"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "CodeableConcept"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "CodeableReference"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "Coding"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "ContactPoint"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "Count"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "Distance"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "Duration"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "HumanName"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "Identifier"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "Money"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "Period"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "Quantity"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "Range"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "Ratio"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "RatioRange"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "Reference"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "SampledData"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "Signature"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "Timing"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "ContactDetail"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "DataRequirement"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "Expression"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "ParameterDefinition"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "RelatedArtifact"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "TriggerDefinition"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "UsageContext"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "Availability"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "ExtendedContactDetail"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "Dosage"^^xsd:anyURI ] ] [ fhir:code [ fhir:v "Meta"^^xsd:anyURI ] ] ) ; ( fhir:condition [ fhir:v "ext-1" ] ) ; ( fhir:constraint [ fhir:key [ fhir:v "ele-1" ] ; fhir:severity [ fhir:v "error" ] ; fhir:human [ fhir:v "All FHIR elements must have a @value or children" ] ; fhir:expression [ fhir:v "hasValue() or (children().count() > id.count())" ] ; fhir:source [ fhir:v "http://hl7.org/fhir/StructureDefinition/Element"^^xsd:anyURI ; fhir:link <http://hl7.org/fhir/StructureDefinition/Element> ] ] ) ; fhir:isModifier [ fhir:v "false"^^xsd:boolean ] ; fhir:isSummary [ fhir:v "false"^^xsd:boolean ] ; ( fhir:mapping [ fhir:identity [ fhir:v "rim" ] ; fhir:map [ fhir:v "N/A" ] ] ) ] ) ] ; # fhir:differential [ ( fhir:element [ fhir:id [ fhir:v "Extension" ] ; fhir:path [ fhir:v "Extension" ] ; fhir:short [ fhir:v "An allowable parameter combination" ] ; fhir:definition [ fhir:v "This extension defines a possible search parameter combination by listing a set of search parameters and indicating whether they are required or optional.\n- If a search combination is specified, clients should expect that they must submit a search that meets one of the required combinations or the search will be unsuccessful.\n- If multiple search parameter combinations are specified, a client may pick between them, and supply the minimal required parameters for any of the combinations.\n- If no parameters in the set of search parameters are listed as required, then *at least one* of the listed optional parameters must be present. This shorthand method is the same as repeating the entire extension for each combination of optional and required search parameters." ] ; fhir:comment [ fhir:v "For example, on the Patient Resource you could use this to state support for searching by Patient.name and Patient.gender is required." ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "*" ] ; fhir:isModifier [ fhir:v "false"^^xsd:boolean ] ; ( fhir:mapping [ fhir:identity [ fhir:v "v2" ] ; fhir:map [ fhir:v "N/A" ] ] [ fhir:identity [ fhir:v "rim" ] ; fhir:map [ fhir:v "N/A" ] ] ) ] [ fhir:id [ fhir:v "Extension.extension:required" ] ; fhir:path [ fhir:v "Extension.extension" ] ; fhir:sliceName [ fhir:v "required" ] ; fhir:short [ fhir:v "A required search parameter name" ] ; fhir:definition [ fhir:v "A search parameter name in the combination which is required." ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "*" ] ; ( fhir:type [ fhir:code [ fhir:v "Extension"^^xsd:anyURI ] ] ) ; fhir:isModifier [ fhir:v "false"^^xsd:boolean ] ; ( fhir:mapping [ fhir:identity [ fhir:v "v2" ] ; fhir:map [ fhir:v "N/A" ] ] [ fhir:identity [ fhir:v "rim" ] ; fhir:map [ fhir:v "N/A" ] ] ) ] [ fhir:id [ fhir:v "Extension.extension:required.extension" ] ; fhir:path [ fhir:v "Extension.extension.extension" ] ; fhir:max [ fhir:v "0" ] ] [ fhir:id [ fhir:v "Extension.extension:required.url" ] ; fhir:path [ fhir:v "Extension.extension.url" ] ; ( fhir:type [ fhir:code [ fhir:v "uri"^^xsd:anyURI ] ] ) ; fhir:fixed [ fhir:v "required"^^xsd:anyURI ] ] [ fhir:id [ fhir:v "Extension.extension:required.value[x]" ] ; fhir:path [ fhir:v "Extension.extension.value[x]" ] ; fhir:min [ fhir:v "1"^^xsd:nonNegativeInteger ] ; ( fhir:type [ fhir:code [ fhir:v "string"^^xsd:anyURI ] ] ) ] [ fhir:id [ fhir:v "Extension.extension:optional" ] ; fhir:path [ fhir:v "Extension.extension" ] ; fhir:sliceName [ fhir:v "optional" ] ; fhir:short [ fhir:v "An optional search parameter name" ] ; fhir:definition [ fhir:v "A search parameter name in the combination which is optional." ] ; fhir:comment [ fhir:v "If a defined parameter is not listed as a required or optional parameter, the implication is that the parameter is not supported with this combination. Servers may ignore It, though some may return an error if it is used." ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "*" ] ; ( fhir:type [ fhir:code [ fhir:v "Extension"^^xsd:anyURI ] ] ) ; fhir:isModifier [ fhir:v "false"^^xsd:boolean ] ; ( fhir:mapping [ fhir:identity [ fhir:v "v2" ] ; fhir:map [ fhir:v "N/A" ] ] [ fhir:identity [ fhir:v "rim" ] ; fhir:map [ fhir:v "N/A" ] ] ) ] [ fhir:id [ fhir:v "Extension.extension:optional.extension" ] ; fhir:path [ fhir:v "Extension.extension.extension" ] ; fhir:max [ fhir:v "0" ] ] [ fhir:id [ fhir:v "Extension.extension:optional.url" ] ; fhir:path [ fhir:v "Extension.extension.url" ] ; ( fhir:type [ fhir:code [ fhir:v "uri"^^xsd:anyURI ] ] ) ; fhir:fixed [ fhir:v "optional"^^xsd:anyURI ] ] [ fhir:id [ fhir:v "Extension.extension:optional.value[x]" ] ; fhir:path [ fhir:v "Extension.extension.value[x]" ] ; fhir:min [ fhir:v "1"^^xsd:nonNegativeInteger ] ; ( fhir:type [ fhir:code [ fhir:v "string"^^xsd:anyURI ] ] ) ] [ fhir:id [ fhir:v "Extension.url" ] ; fhir:path [ fhir:v "Extension.url" ] ; fhir:fixed [ fhir:v "http://hl7.org/fhir/StructureDefinition/capabilitystatement-search-parameter-combination"^^xsd:anyURI ] ] [ fhir:id [ fhir:v "Extension.value[x]" ] ; fhir:path [ fhir:v "Extension.value[x]" ] ; fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ; fhir:max [ fhir:v "0" ] ] ) ] . #
IG © 2022+ HL7 International / FHIR Infrastructure. Package hl7.fhir.uv.extensions#5.2.0-ballot based on FHIR 5.0.0. Generated 2024-10-09
Links: Table of Contents |
QA Report
| Version History |
|
Propose a change