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{
 "resourceType": "StructureDefinition",
 "id": "ch-crl-observation-numberexaminedregionallymphnodes",
 "text": {
 "status": "generated",
 "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\"><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=\"http://hl7.org/fhir/r4/formats.html#table\" 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=\"http://hl7.org/fhir/r4/formats.html#table\" 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=\"http://hl7.org/fhir/r4/formats.html#table\" title=\"Minimum and Maximum # of times the the element can appear in the instance\">Card.</a></th><th style=\"width: 100px\" class=\"hierarchy\"><a href=\"http://hl7.org/fhir/r4/formats.html#table\" 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=\"http://hl7.org/fhir/r4/formats.html#table\" title=\"Additional information about the element\">Description &amp; Constraints</a><a href=\"http://hl7.org/fhir/r4/formats.html#table\" title=\"Legend for this format\"><img src=\"http://hl7.org/fhir/r4/help16.png\" alt=\"doco\" style=\"background-color: inherit\"/></a></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_resource.png\" alt=\".\" style=\"background-color: white; background-color: inherit\" title=\"Resource\" class=\"hierarchy\"/> Observation<a name=\"Observation\"> </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/r4/observation.html\">Observation</a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">CH CRL Observation Number of Examined Regional Lymph Nodes</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_bck11.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: #F7F7F7; background-color: inherit\" title=\"Element\" class=\"hierarchy\"/> code<a name=\"Observation.code\"> </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..1</td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a style=\"opacity: 0.4\" href=\"http://hl7.org/fhir/r4/datatypes.html#CodeableConcept\">CodeableConcept</a></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">Required Pattern: At least the following</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_bck101.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.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"icon_fixed.gif\" alt=\".\" style=\"background-color: white; background-color: inherit\" title=\"Fixed Value\" class=\"hierarchy\"/> <a href=\"http://hl7.org/fhir/r4/datatypes-definitions.html#CodeableConcept.coding\">coding</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\">1..*</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/r4/datatypes.html#Coding\">Coding</a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">Code defined by a terminology system Fixed Value: (complex)</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_bck1010.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.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"icon_fixed.gif\" alt=\".\" style=\"background-color: #F7F7F7; background-color: inherit\" title=\"Fixed Value\" class=\"hierarchy\"/> <a href=\"http://hl7.org/fhir/r4/datatypes-definitions.html#Coding.system\">system</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..1</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/r4/datatypes.html#uri\">uri</a></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">Identity of the terminology system Fixed Value: <a style=\"color: darkgreen\" href=\"http://hl7.org/fhir/r4/loinc.html\">http://loinc.org</a></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_bck1010.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.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"icon_fixed.gif\" alt=\".\" style=\"background-color: white; background-color: inherit\" title=\"Fixed Value\" class=\"hierarchy\"/> <a href=\"http://hl7.org/fhir/r4/datatypes-definitions.html#Coding.code\">code</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\">1..1</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/r4/datatypes.html#code\">code</a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">Symbol in syntax defined by the system Fixed Value: 21894-1</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_bck1000.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.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"icon_fixed.gif\" alt=\".\" style=\"background-color: #F7F7F7; background-color: inherit\" title=\"Fixed Value\" class=\"hierarchy\"/> <a href=\"http://hl7.org/fhir/r4/datatypes-definitions.html#Coding.display\">display</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..1</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/r4/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\">Representation defined by the system Fixed Value: Regional lymph nodes examined [#] Specimen</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_bck11.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_reference.png\" alt=\".\" style=\"background-color: white; background-color: inherit\" title=\"Reference to another Resource\" class=\"hierarchy\"/> subject<a name=\"Observation.subject\"> </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\">1..1</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/r4/references.html\">Reference</a>(<a href=\"StructureDefinition-ch-crl-patient.html\">CH CRL Patient Profile</a>)</td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">Patient</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_bck100.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.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\"/> reference<a name=\"Observation.subject.reference\"> </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..1</td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a style=\"opacity: 0.4\" href=\"http://hl7.org/fhir/r4/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\"/></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_primitive.png\" alt=\".\" style=\"background-color: white; background-color: inherit\" title=\"Primitive Data Type\" class=\"hierarchy\"/> effectiveDateTime<a name=\"Observation.effectiveDateTime\"> </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\">1..1</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/r4/datatypes.html#dateTime\">dateTime</a></td><td style=\"vertical-align: top; text-align : left; background-color: white; 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: #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_bck11.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_reference.png\" alt=\".\" style=\"background-color: #F7F7F7; background-color: inherit\" title=\"Reference to another Resource\" class=\"hierarchy\"/> performer<a name=\"Observation.performer\"> </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\">0..*</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/r4/references.html\">Reference</a>(<a href=\"StructureDefinition-ch-crl-practitioner.html\">CH CRL Practitioner Profile</a> | <a href=\"StructureDefinition-ch-crl-organization-department.html\">CH CRL Organization Department Profile</a>)</td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">Practitioner if resident physician or Organization Department if hospital</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_bck100.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.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\"/> reference<a name=\"Observation.performer.reference\"> </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\">1..1</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: 0.4\" href=\"http://hl7.org/fhir/r4/datatypes.html#string\">string</a></td><td style=\"vertical-align: top; text-align : left; background-color: white; 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: #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_bck11.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_datatype.gif\" alt=\".\" style=\"background-color: #F7F7F7; background-color: inherit\" title=\"Data Type\" class=\"hierarchy\"/> valueQuantity<a name=\"Observation.valueQuantity\"> </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\">0..1</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/r4/datatypes.html#Quantity\">Quantity</a></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">The total number of regional lymph nodes that were excised and examined by the pathologist</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_bck100.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.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\"/> value<a name=\"Observation.valueQuantity.value\"> </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\">1..1</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: 0.4\" href=\"http://hl7.org/fhir/r4/datatypes.html#decimal\">decimal</a></td><td style=\"vertical-align: top; text-align : left; background-color: white; 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: #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_bck01.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\"/> dataAbsentReason<a name=\"Observation.dataAbsentReason\"> </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\">0..1</td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a style=\"opacity: 0.4\" href=\"http://hl7.org/fhir/r4/datatypes.html#CodeableConcept\">CodeableConcept</a></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">No information whether regional lymph nodes were examined or not. OR Regional lymph nodes were examined, but no information on the number.</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_bck001.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.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\"/> coding<a name=\"Observation.dataAbsentReason.coding\"> </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\">1..*</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: 0.4\" href=\"http://hl7.org/fhir/r4/datatypes.html#Coding\">Coding</a></td><td style=\"vertical-align: top; text-align : left; background-color: white; 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: #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_bck0010.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_blank.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: #F7F7F7; background-color: inherit\" title=\"Element\" class=\"hierarchy\"/> system<a name=\"Observation.dataAbsentReason.coding.system\"> </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..1</td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a style=\"opacity: 0.4\" href=\"http://hl7.org/fhir/r4/datatypes.html#uri\">uri</a></td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">Fixed Value: <a style=\"color: darkgreen\" href=\"http://hl7.org/fhir/r4/codesystem-data-absent-reason.html\">http://terminology.hl7.org/CodeSystem/data-absent-reason</a></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_bck0010.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_blank.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\"/> code<a name=\"Observation.dataAbsentReason.coding.code\"> </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\">1..1</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: 0.4\" href=\"http://hl7.org/fhir/r4/datatypes.html#code\">code</a></td><td style=\"vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">Fixed Value: unknown</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_bck0000.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_blank.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\"/> display<a name=\"Observation.dataAbsentReason.coding.display\"> </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..1</td><td style=\"vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a style=\"opacity: 0.4\" href=\"http://hl7.org/fhir/r4/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\">Fixed Value: Unknown</td></tr>\r\n<tr><td colspan=\"5\" class=\"hierarchy\"> <a href=\"http://hl7.org/fhir/r4/formats.html#table\" title=\"Legend for this format\"><img src=\"http://hl7.org/fhir/r4/help16.png\" alt=\"doco\" style=\"background-color: inherit\"/> Documentation for this format</a></td></tr></table></div>"
 },
 "url": "http://fhir.ch/ig/ch-crl/StructureDefinition/ch-crl-observation-numberexaminedregionallymphnodes",
 "version": "0.2.1",
 "name": "CHCRLObservationNumberExaminedRegionalLymphNodes",
 "title": "CH CRL Observation Number of Examined Regional Lymph Nodes Profile",
 "status": "draft",
 "date": "2019-11-07T23:00:00+00:00",
 "publisher": "Bundesamt für Gesundheit BAG",
 "description": "Observation for the number of examined regional lymph nodes",
 "fhirVersion": "4.0.1",
 "mapping": [
 {
 "identity": "NICER-A",
 "uri": "https://www.nicer.org/assets/files/krebsregistrierung/datadictionary_e-g-f-i.zip",
 "name": "NATIONAL CANCER DATA DICTIONARY, V 1.1, Part A: BASIC VARIABLES for Adults, Adolescents, and Children"
 },
 {
 "identity": "workflow",
 "uri": "http://hl7.org/fhir/workflow",
 "name": "Workflow Pattern"
 },
 {
 "identity": "sct-concept",
 "uri": "http://snomed.info/conceptdomain",
 "name": "SNOMED CT Concept Domain Binding"
 },
 {
 "identity": "v2",
 "uri": "http://hl7.org/v2",
 "name": "HL7 v2 Mapping"
 },
 {
 "identity": "rim",
 "uri": "http://hl7.org/v3",
 "name": "RIM Mapping"
 },
 {
 "identity": "w5",
 "uri": "http://hl7.org/fhir/fivews",
 "name": "FiveWs Pattern Mapping"
 },
 {
 "identity": "sct-attr",
 "uri": "http://snomed.org/attributebinding",
 "name": "SNOMED CT Attribute Binding"
 }
 ],
 "kind": "resource",
 "abstract": false,
 "type": "Observation",
 "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Observation",
 "derivation": "constraint",
 "snapshot": {
 "element": [
 {
 "id": "Observation",
 "path": "Observation",
 "short": "CH CRL Observation Number of Examined Regional Lymph Nodes",
 "definition": "Measurements and simple assertions made about a patient, device or other subject.",
 "comment": "Used for simple observations such as device measurements, laboratory atomic results, vital signs, height, weight, smoking status, comments, etc. Other resources are used to provide context for observations such as laboratory reports, etc.",
 "alias": [
 "Vital Signs",
 "Measurement",
 "Results",
 "Tests"
 ],
 "min": 0,
 "max": "*",
 "base": {
 "path": "Observation",
 "min": 0,
 "max": "*"
 },
 "constraint": [
 {
 "key": "dom-2",
 "severity": "error",
 "human": "If the resource is contained in another resource, it SHALL NOT contain nested Resources",
 "expression": "contained.contained.empty()",
 "xpath": "not(parent::f:contained and f:contained)",
 "source": "http://hl7.org/fhir/StructureDefinition/DomainResource"
 },
 {
 "key": "dom-3",
 "severity": "error",
 "human": "If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource",
 "expression": "contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()",
 "xpath": "not(exists(for $id in f:contained/*/f:id/@value return $contained[not(parent::*/descendant::f:reference/@value=concat('#', $contained/*/id/@value) or descendant::f:reference[@value='#'])]))",
 "source": "http://hl7.org/fhir/StructureDefinition/DomainResource"
 },
 {
 "key": "dom-4",
 "severity": "error",
 "human": "If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated",
 "expression": "contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()",
 "xpath": "not(exists(f:contained/*/f:meta/f:versionId)) and not(exists(f:contained/*/f:meta/f:lastUpdated))",
 "source": "http://hl7.org/fhir/StructureDefinition/DomainResource"
 },
 {
 "key": "dom-5",
 "severity": "error",
 "human": "If a resource is contained in another resource, it SHALL NOT have a security label",
 "expression": "contained.meta.security.empty()",
 "xpath": "not(exists(f:contained/*/f:meta/f:security))",
 "source": "http://hl7.org/fhir/StructureDefinition/DomainResource"
 },
 {
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice",
 "valueBoolean": true
 },
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice-explanation",
 "valueMarkdown": "When a resource has no narrative, only systems that fully understand the data can display the resource to a human safely. Including a human readable representation in the resource makes for a much more robust eco-system and cheaper handling of resources by intermediary systems. Some ecosystems restrict distribution of resources to only those systems that do fully understand the resources, and as a consequence implementers may believe that the narrative is superfluous. However experience shows that such eco-systems often open up to new participants over time."
 }
 ],
 "key": "dom-6",
 "severity": "warning",
 "human": "A resource should have narrative for robust management",
 "expression": "text.`div`.exists()",
 "xpath": "exists(f:text/h:div)",
 "source": "http://hl7.org/fhir/StructureDefinition/DomainResource"
 },
 {
 "key": "obs-6",
 "severity": "error",
 "human": "dataAbsentReason SHALL only be present if Observation.value[x] is not present",
 "expression": "dataAbsentReason.empty() or value.empty()",
 "xpath": "not(exists(f:dataAbsentReason)) or (not(exists(*[starts-with(local-name(.), 'value')])))",
 "source": "http://hl7.org/fhir/StructureDefinition/Observation"
 },
 {
 "key": "obs-7",
 "severity": "error",
 "human": "If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present",
 "expression": "value.empty() or component.code.where(coding.intersect(%resource.code.coding).exists()).empty()",
 "xpath": "not(f:*[starts-with(local-name(.), 'value')] and (for $coding in f:code/f:coding return f:component/f:code/f:coding[f:code/@value=$coding/f:code/@value] [f:system/@value=$coding/f:system/@value]))",
 "source": "http://hl7.org/fhir/StructureDefinition/Observation"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "mapping": [
 {
 "identity": "rim",
 "map": "Entity. Role, or Act"
 },
 {
 "identity": "workflow",
 "map": "Event"
 },
 {
 "identity": "sct-concept",
 "map": "< 363787002 |Observable entity|"
 },
 {
 "identity": "v2",
 "map": "OBX"
 },
 {
 "identity": "rim",
 "map": "Observation[classCode=OBS, moodCode=EVN]"
 },
 {
 "identity": "NICER-A",
 "map": "Number of examined regional lymph nodes (Variable number: 4.12)"
 }
 ]
 },
 {
 "id": "Observation.id",
 "path": "Observation.id",
 "short": "Logical id of this artifact",
 "definition": "The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.",
 "comment": "The only time that a resource does not have an id is when it is being submitted to the server using a create operation.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Resource.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": true
 },
 {
 "id": "Observation.meta",
 "path": "Observation.meta",
 "short": "Metadata about the resource",
 "definition": "The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Resource.meta",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "Meta"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true
 },
 {
 "id": "Observation.implicitRules",
 "path": "Observation.implicitRules",
 "short": "A set of rules under which this content was created",
 "definition": "A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.",
 "comment": "Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Resource.implicitRules",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "uri"
 }
 ],
 "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"
 }
 ],
 "isModifier": true,
 "isModifierReason": "This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation",
 "isSummary": true
 },
 {
 "id": "Observation.language",
 "path": "Observation.language",
 "short": "Language of the resource content",
 "definition": "The base language in which the resource is written.",
 "comment": "Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Resource.language",
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "binding": {
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet",
 "valueCanonical": "http://hl7.org/fhir/ValueSet/all-languages"
 },
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
 "valueString": "Language"
 },
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding",
 "valueBoolean": true
 }
 ],
 "strength": "preferred",
 "description": "A human language.",
 "valueSet": "http://hl7.org/fhir/ValueSet/languages"
 }
 },
 {
 "id": "Observation.text",
 "path": "Observation.text",
 "short": "Text summary of the resource, for human interpretation",
 "definition": "A human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it \"clinically safe\" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety.",
 "comment": "Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a \"text blob\" or where text is additionally entered raw or narrated and encoded information is added later.",
 "alias": [
 "narrative",
 "html",
 "xhtml",
 "display"
 ],
 "min": 0,
 "max": "1",
 "base": {
 "path": "DomainResource.text",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "Narrative"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "mapping": [
 {
 "identity": "rim",
 "map": "Act.text?"
 }
 ]
 },
 {
 "id": "Observation.contained",
 "path": "Observation.contained",
 "short": "Contained, inline Resources",
 "definition": "These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope.",
 "comment": "This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags In their meta elements, but SHALL NOT have security labels.",
 "alias": [
 "inline resources",
 "anonymous resources",
 "contained resources"
 ],
 "min": 0,
 "max": "*",
 "base": {
 "path": "DomainResource.contained",
 "min": 0,
 "max": "*"
 },
 "type": [
 {
 "code": "Resource"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "mapping": [
 {
 "identity": "rim",
 "map": "N/A"
 }
 ]
 },
 {
 "id": "Observation.extension",
 "path": "Observation.extension",
 "short": "Additional content defined by implementations",
 "definition": "May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and manageable, 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.",
 "comment": "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.",
 "alias": [
 "extensions",
 "user content"
 ],
 "min": 0,
 "max": "*",
 "base": {
 "path": "DomainResource.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"
 },
 {
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "mapping": [
 {
 "identity": "rim",
 "map": "N/A"
 }
 ]
 },
 {
 "id": "Observation.modifierExtension",
 "path": "Observation.modifierExtension",
 "short": "Extensions that cannot be ignored",
 "definition": "May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.\n\nModifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).",
 "comment": "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.",
 "requirements": "Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/r4/extensibility.html#modifierExtension).",
 "alias": [
 "extensions",
 "user content"
 ],
 "min": 0,
 "max": "*",
 "base": {
 "path": "DomainResource.modifierExtension",
 "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"
 },
 {
 "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"
 }
 ],
 "isModifier": true,
 "isModifierReason": "Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them",
 "isSummary": false,
 "mapping": [
 {
 "identity": "rim",
 "map": "N/A"
 }
 ]
 },
 {
 "id": "Observation.identifier",
 "path": "Observation.identifier",
 "short": "Business Identifier for observation",
 "definition": "A unique identifier assigned to this observation.",
 "requirements": "Allows observations to be distinguished and referenced.",
 "min": 0,
 "max": "*",
 "base": {
 "path": "Observation.identifier",
 "min": 0,
 "max": "*"
 },
 "type": [
 {
 "code": "Identifier"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "workflow",
 "map": "Event.identifier"
 },
 {
 "identity": "w5",
 "map": "FiveWs.identifier"
 },
 {
 "identity": "v2",
 "map": "OBX.21 For OBX segments from systems without OBX-21 support a combination of ORC/OBR and OBX must be negotiated between trading partners to uniquely identify the OBX segment. Depending on how V2 has been implemented each of these may be an option: 1) OBR-3 + OBX-3 + OBX-4 or 2) OBR-3 + OBR-4 + OBX-3 + OBX-4 or 2) some other way to uniquely ID the OBR/ORC + OBX-3 + OBX-4."
 },
 {
 "identity": "rim",
 "map": "id"
 }
 ]
 },
 {
 "id": "Observation.basedOn",
 "path": "Observation.basedOn",
 "short": "Fulfills plan, proposal or order",
 "definition": "A plan, proposal or order that is fulfilled in whole or in part by this event. For example, a MedicationRequest may require a patient to have laboratory test performed before it is dispensed.",
 "requirements": "Allows tracing of authorization for the event and tracking whether proposals/recommendations were acted upon.",
 "alias": [
 "Fulfills"
 ],
 "min": 0,
 "max": "*",
 "base": {
 "path": "Observation.basedOn",
 "min": 0,
 "max": "*"
 },
 "type": [
 {
 "code": "Reference",
 "targetProfile": [
 "http://hl7.org/fhir/StructureDefinition/CarePlan",
 "http://hl7.org/fhir/StructureDefinition/DeviceRequest",
 "http://hl7.org/fhir/StructureDefinition/ImmunizationRecommendation",
 "http://hl7.org/fhir/StructureDefinition/MedicationRequest",
 "http://hl7.org/fhir/StructureDefinition/NutritionOrder",
 "http://hl7.org/fhir/StructureDefinition/ServiceRequest"
 ]
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "workflow",
 "map": "Event.basedOn"
 },
 {
 "identity": "v2",
 "map": "ORC"
 },
 {
 "identity": "rim",
 "map": ".inboundRelationship[typeCode=COMP].source[moodCode=EVN]"
 }
 ]
 },
 {
 "id": "Observation.partOf",
 "path": "Observation.partOf",
 "short": "Part of referenced event",
 "definition": "A larger event of which this particular Observation is a component or step. For example, an observation as part of a procedure.",
 "comment": "To link an Observation to an Encounter use `encounter`. See the [Notes](http://hl7.org/fhir/r4/observation.html#obsgrouping) below for guidance on referencing another Observation.",
 "alias": [
 "Container"
 ],
 "min": 0,
 "max": "*",
 "base": {
 "path": "Observation.partOf",
 "min": 0,
 "max": "*"
 },
 "type": [
 {
 "code": "Reference",
 "targetProfile": [
 "http://hl7.org/fhir/StructureDefinition/MedicationAdministration",
 "http://hl7.org/fhir/StructureDefinition/MedicationDispense",
 "http://hl7.org/fhir/StructureDefinition/MedicationStatement",
 "http://hl7.org/fhir/StructureDefinition/Procedure",
 "http://hl7.org/fhir/StructureDefinition/Immunization",
 "http://hl7.org/fhir/StructureDefinition/ImagingStudy"
 ]
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "workflow",
 "map": "Event.partOf"
 },
 {
 "identity": "v2",
 "map": "Varies by domain"
 },
 {
 "identity": "rim",
 "map": ".outboundRelationship[typeCode=FLFS].target"
 }
 ]
 },
 {
 "id": "Observation.status",
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-display-hint",
 "valueString": "default: final"
 }
 ],
 "path": "Observation.status",
 "short": "registered | preliminary | final | amended +",
 "definition": "The status of the result value.",
 "comment": "This element is labeled as a modifier because the status contains codes that mark the resource as not currently valid.",
 "requirements": "Need to track the status of individual results. Some results are finalized before the whole report is finalized.",
 "min": 1,
 "max": "1",
 "base": {
 "path": "Observation.status",
 "min": 1,
 "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"
 }
 ],
 "isModifier": true,
 "isModifierReason": "This element is labeled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid",
 "isSummary": true,
 "binding": {
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
 "valueString": "ObservationStatus"
 }
 ],
 "strength": "required",
 "description": "Codes providing the status of an observation.",
 "valueSet": "http://hl7.org/fhir/ValueSet/observation-status|4.0.1"
 },
 "mapping": [
 {
 "identity": "workflow",
 "map": "Event.status"
 },
 {
 "identity": "w5",
 "map": "FiveWs.status"
 },
 {
 "identity": "sct-concept",
 "map": "< 445584004 |Report by finality status|"
 },
 {
 "identity": "v2",
 "map": "OBX-11"
 },
 {
 "identity": "rim",
 "map": "status Amended & Final are differentiated by whether it is the subject of a ControlAct event with a type of \"revise\""
 }
 ]
 },
 {
 "id": "Observation.category",
 "path": "Observation.category",
 "short": "Classification of type of observation",
 "definition": "A code that classifies the general type of observation being made.",
 "comment": "In addition to the required category valueset, this element allows various categorization schemes based on the owner’s definition of the category and effectively multiple categories can be used at once. The level of granularity is defined by the category concepts in the value set.",
 "requirements": "Used for filtering what observations are retrieved and displayed.",
 "min": 0,
 "max": "*",
 "base": {
 "path": "Observation.category",
 "min": 0,
 "max": "*"
 },
 "type": [
 {
 "code": "CodeableConcept"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "binding": {
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
 "valueString": "ObservationCategory"
 }
 ],
 "strength": "preferred",
 "description": "Codes for high level observation categories.",
 "valueSet": "http://hl7.org/fhir/ValueSet/observation-category"
 },
 "mapping": [
 {
 "identity": "w5",
 "map": "FiveWs.class"
 },
 {
 "identity": "rim",
 "map": ".outboundRelationship[typeCode=\"COMP].target[classCode=\"LIST\", moodCode=\"EVN\"].code"
 }
 ]
 },
 {
 "id": "Observation.code",
 "path": "Observation.code",
 "short": "Type of observation (code / type)",
 "definition": "Describes what was observed. Sometimes this is called the observation \"name\".",
 "comment": "*All* code-value and, if present, component.code-component.value pairs need to be taken into account to correctly understand the meaning of the observation.",
 "requirements": "Knowing what kind of observation is being made is essential to understanding the observation.",
 "alias": [
 "Name"
 ],
 "min": 1,
 "max": "1",
 "base": {
 "path": "Observation.code",
 "min": 1,
 "max": "1"
 },
 "type": [
 {
 "code": "CodeableConcept"
 }
 ],
 "patternCodeableConcept": {
 "coding": [
 {
 "system": "http://loinc.org",
 "code": "21894-1",
 "display": "Regional lymph nodes examined [#] Specimen"
 }
 ]
 },
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "binding": {
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
 "valueString": "ObservationCode"
 }
 ],
 "strength": "example",
 "description": "Codes identifying names of simple observations.",
 "valueSet": "http://hl7.org/fhir/ValueSet/observation-codes"
 },
 "mapping": [
 {
 "identity": "workflow",
 "map": "Event.code"
 },
 {
 "identity": "w5",
 "map": "FiveWs.what[x]"
 },
 {
 "identity": "sct-concept",
 "map": "< 363787002 |Observable entity| OR < 386053000 |Evaluation procedure|"
 },
 {
 "identity": "v2",
 "map": "OBX-3"
 },
 {
 "identity": "rim",
 "map": "code"
 },
 {
 "identity": "sct-attr",
 "map": "116680003 |Is a|"
 }
 ]
 },
 {
 "id": "Observation.subject",
 "path": "Observation.subject",
 "short": "Patient",
 "definition": "The patient, or group of patients, location, or device this observation is about and into whose record the observation is placed. If the actual focus of the observation is different from the subject (or a sample of, part, or region of the subject), the `focus` element or the `code` itself specifies the actual focus of the observation.",
 "comment": "One would expect this element to be a cardinality of 1..1. The only circumstance in which the subject can be missing is when the observation is made by a device that does not know the patient. In this case, the observation SHALL be matched to a patient through some context/channel matching technique, and at this point, the observation should be updated.",
 "requirements": "Observations have no value if you don't know who or what they're about.",
 "min": 1,
 "max": "1",
 "base": {
 "path": "Observation.subject",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "Reference",
 "targetProfile": [
 "http://fhir.ch/ig/ch-crl/StructureDefinition/ch-crl-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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "workflow",
 "map": "Event.subject"
 },
 {
 "identity": "w5",
 "map": "FiveWs.subject[x]"
 },
 {
 "identity": "v2",
 "map": "PID-3"
 },
 {
 "identity": "rim",
 "map": "participation[typeCode=RTGT]"
 },
 {
 "identity": "w5",
 "map": "FiveWs.subject"
 }
 ]
 },
 {
 "id": "Observation.subject.id",
 "path": "Observation.subject.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": "Observation.subject.extension",
 "path": "Observation.subject.extension",
 "slicing": {
 "discriminator": [
 {
 "type": "value",
 "path": "url"
 }
 ],
 "description": "Extensions are always sliced by (at least) url",
 "rules": "open"
 },
 "short": "Additional content defined by implementations",
 "definition": "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 manageable, 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.",
 "comment": "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.",
 "alias": [
 "extensions",
 "user content"
 ],
 "min": 0,
 "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"
 },
 {
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "mapping": [
 {
 "identity": "rim",
 "map": "n/a"
 }
 ]
 },
 {
 "id": "Observation.subject.reference",
 "path": "Observation.subject.reference",
 "short": "Literal reference, Relative, internal or absolute URL",
 "definition": "A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.",
 "comment": "Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure \"/[type]/[id]\" then it should be assumed that the reference is to a FHIR RESTful server.",
 "min": 1,
 "max": "1",
 "base": {
 "path": "Reference.reference",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "string"
 }
 ],
 "condition": [
 "ref-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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "rim",
 "map": "N/A"
 }
 ]
 },
 {
 "id": "Observation.subject.type",
 "path": "Observation.subject.type",
 "short": "Type the reference refers to (e.g. \"Patient\")",
 "definition": "The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.\n\nThe type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. \"Patient\" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).",
 "comment": "This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Reference.type",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "uri"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "binding": {
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
 "valueString": "FHIRResourceTypeExt"
 }
 ],
 "strength": "extensible",
 "description": "Aa resource (or, for logical models, the URI of the logical model).",
 "valueSet": "http://hl7.org/fhir/ValueSet/resource-types"
 },
 "mapping": [
 {
 "identity": "rim",
 "map": "N/A"
 }
 ]
 },
 {
 "id": "Observation.subject.identifier",
 "path": "Observation.subject.identifier",
 "short": "Logical reference, when literal reference is not known",
 "definition": "An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.",
 "comment": "When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy. \n\nWhen both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference\n\nApplications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.\n\nReference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Reference.identifier",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "Identifier"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "rim",
 "map": ".identifier"
 }
 ]
 },
 {
 "id": "Observation.subject.display",
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable",
 "valueBoolean": true
 }
 ],
 "path": "Observation.subject.display",
 "short": "Text alternative for the resource",
 "definition": "Plain text narrative that identifies the resource in addition to the resource reference.",
 "comment": "This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Reference.display",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "string"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "rim",
 "map": "N/A"
 }
 ]
 },
 {
 "id": "Observation.focus",
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
 "valueCode": "trial-use"
 }
 ],
 "path": "Observation.focus",
 "short": "What the observation is about, when it is not about the subject of record",
 "definition": "The actual focus of an observation when it is not the patient of record representing something or someone associated with the patient such as a spouse, parent, fetus, or donor. For example, fetus observations in a mother's record. The focus of an observation could also be an existing condition, an intervention, the subject's diet, another observation of the subject, or a body structure such as tumor or implanted device. An example use case would be using the Observation resource to capture whether the mother is trained to change her child's tracheostomy tube. In this example, the child is the patient of record and the mother is the focus.",
 "comment": "Typically, an observation is made about the subject - a patient, or group of patients, location, or device - and the distinction between the subject and what is directly measured for an observation is specified in the observation code itself ( e.g., \"Blood Glucose\") and does not need to be represented separately using this element. Use `specimen` if a reference to a specimen is required. If a code is required instead of a resource use either `bodysite` for bodysites or the standard extension [focusCode](http://hl7.org/fhir/r4/extension-observation-focuscode.html).",
 "min": 0,
 "max": "*",
 "base": {
 "path": "Observation.focus",
 "min": 0,
 "max": "*"
 },
 "type": [
 {
 "code": "Reference",
 "targetProfile": [
 "http://hl7.org/fhir/StructureDefinition/Resource"
 ]
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "w5",
 "map": "FiveWs.subject[x]"
 },
 {
 "identity": "v2",
 "map": "OBX-3"
 },
 {
 "identity": "rim",
 "map": "participation[typeCode=SBJ]"
 },
 {
 "identity": "w5",
 "map": "FiveWs.subject"
 }
 ]
 },
 {
 "id": "Observation.encounter",
 "path": "Observation.encounter",
 "short": "Healthcare event during which this observation is made",
 "definition": "The healthcare event (e.g. a patient and healthcare provider interaction) during which this observation is made.",
 "comment": "This will typically be the encounter the event occurred within, but some events may be initiated prior to or after the official completion of an encounter but still be tied to the context of the encounter (e.g. pre-admission laboratory tests).",
 "requirements": "For some observations it may be important to know the link between an observation and a particular encounter.",
 "alias": [
 "Context"
 ],
 "min": 0,
 "max": "1",
 "base": {
 "path": "Observation.encounter",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "Reference",
 "targetProfile": [
 "http://hl7.org/fhir/StructureDefinition/Encounter"
 ]
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "workflow",
 "map": "Event.context"
 },
 {
 "identity": "w5",
 "map": "FiveWs.context"
 },
 {
 "identity": "v2",
 "map": "PV1"
 },
 {
 "identity": "rim",
 "map": "inboundRelationship[typeCode=COMP].source[classCode=ENC, moodCode=EVN]"
 }
 ]
 },
 {
 "id": "Observation.effective[x]",
 "path": "Observation.effective[x]",
 "slicing": {
 "discriminator": [
 {
 "type": "type",
 "path": "$this"
 }
 ],
 "ordered": false,
 "rules": "closed"
 },
 "short": "Clinically relevant time/time-period for observation",
 "definition": "The time or time-period the observed value is asserted as being true. For biological subjects - e.g. human patients - this is usually called the \"physiologically relevant time\". This is usually either the time of the procedure or of specimen collection, but very often the source of the date/time is not known, only the date/time itself.",
 "comment": "At least a date should be present unless this observation is a historical report. For recording imprecise or \"fuzzy\" times (For example, a blood glucose measurement taken \"after breakfast\") use the [Timing](http://hl7.org/fhir/r4/datatypes.html#timing) datatype which allow the measurement to be tied to regular life events.",
 "requirements": "Knowing when an observation was deemed true is important to its relevance as well as determining trends.",
 "alias": [
 "Occurrence"
 ],
 "min": 1,
 "max": "1",
 "base": {
 "path": "Observation.effective[x]",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "dateTime"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "workflow",
 "map": "Event.occurrence[x]"
 },
 {
 "identity": "w5",
 "map": "FiveWs.done[x]"
 },
 {
 "identity": "v2",
 "map": "OBX-14, and/or OBX-19 after v2.4 (depends on who observation made)"
 },
 {
 "identity": "rim",
 "map": "effectiveTime"
 }
 ]
 },
 {
 "id": "Observation.effective[x]:effectiveDateTime",
 "path": "Observation.effective[x]",
 "sliceName": "effectiveDateTime",
 "short": "Clinically relevant time/time-period for observation",
 "definition": "The time or time-period the observed value is asserted as being true. For biological subjects - e.g. human patients - this is usually called the \"physiologically relevant time\". This is usually either the time of the procedure or of specimen collection, but very often the source of the date/time is not known, only the date/time itself.",
 "comment": "At least a date should be present unless this observation is a historical report. For recording imprecise or \"fuzzy\" times (For example, a blood glucose measurement taken \"after breakfast\") use the [Timing](http://hl7.org/fhir/r4/datatypes.html#timing) datatype which allow the measurement to be tied to regular life events.",
 "requirements": "Knowing when an observation was deemed true is important to its relevance as well as determining trends.",
 "alias": [
 "Occurrence"
 ],
 "min": 1,
 "max": "1",
 "base": {
 "path": "Observation.effective[x]",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "dateTime"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "workflow",
 "map": "Event.occurrence[x]"
 },
 {
 "identity": "w5",
 "map": "FiveWs.done[x]"
 },
 {
 "identity": "v2",
 "map": "OBX-14, and/or OBX-19 after v2.4 (depends on who observation made)"
 },
 {
 "identity": "rim",
 "map": "effectiveTime"
 }
 ]
 },
 {
 "id": "Observation.issued",
 "path": "Observation.issued",
 "short": "Date/Time this version was made available",
 "definition": "The date and time this version of the observation was made available to providers, typically after the results have been reviewed and verified.",
 "comment": "For Observations that don’t require review and verification, it may be the same as the [`lastUpdated` ](http://hl7.org/fhir/r4/resource-definitions.html#Meta.lastUpdated) time of the resource itself. For Observations that do require review and verification for certain updates, it might not be the same as the `lastUpdated` time of the resource itself due to a non-clinically significant update that doesn’t require the new version to be reviewed and verified again.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Observation.issued",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "instant"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "w5",
 "map": "FiveWs.recorded"
 },
 {
 "identity": "v2",
 "map": "OBR.22 (or MSH.7), or perhaps OBX-19 (depends on who observation made)"
 },
 {
 "identity": "rim",
 "map": "participation[typeCode=AUT].time"
 }
 ]
 },
 {
 "id": "Observation.performer",
 "path": "Observation.performer",
 "short": "Practitioner if resident physician or Organization Department if hospital",
 "definition": "Who was responsible for asserting the observed value as \"true\".",
 "requirements": "May give a degree of confidence in the observation and also indicates where follow-up questions should be directed.",
 "min": 0,
 "max": "*",
 "base": {
 "path": "Observation.performer",
 "min": 0,
 "max": "*"
 },
 "type": [
 {
 "code": "Reference",
 "targetProfile": [
 "http://fhir.ch/ig/ch-crl/StructureDefinition/ch-crl-practitioner",
 "http://fhir.ch/ig/ch-crl/StructureDefinition/ch-crl-organization-department"
 ]
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "workflow",
 "map": "Event.performer.actor"
 },
 {
 "identity": "w5",
 "map": "FiveWs.actor"
 },
 {
 "identity": "v2",
 "map": "OBX.15 / (Practitioner) OBX-16, PRT-5:PRT-4='RO' / (Device) OBX-18 , PRT-10:PRT-4='EQUIP' / (Organization) OBX-23, PRT-8:PRT-4='PO'"
 },
 {
 "identity": "rim",
 "map": "participation[typeCode=PRF]"
 }
 ]
 },
 {
 "id": "Observation.performer.id",
 "path": "Observation.performer.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": "Observation.performer.extension",
 "path": "Observation.performer.extension",
 "slicing": {
 "discriminator": [
 {
 "type": "value",
 "path": "url"
 }
 ],
 "description": "Extensions are always sliced by (at least) url",
 "rules": "open"
 },
 "short": "Additional content defined by implementations",
 "definition": "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 manageable, 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.",
 "comment": "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.",
 "alias": [
 "extensions",
 "user content"
 ],
 "min": 0,
 "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"
 },
 {
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "mapping": [
 {
 "identity": "rim",
 "map": "n/a"
 }
 ]
 },
 {
 "id": "Observation.performer.reference",
 "path": "Observation.performer.reference",
 "short": "Literal reference, Relative, internal or absolute URL",
 "definition": "A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.",
 "comment": "Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure \"/[type]/[id]\" then it should be assumed that the reference is to a FHIR RESTful server.",
 "min": 1,
 "max": "1",
 "base": {
 "path": "Reference.reference",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "string"
 }
 ],
 "condition": [
 "ref-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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "rim",
 "map": "N/A"
 }
 ]
 },
 {
 "id": "Observation.performer.type",
 "path": "Observation.performer.type",
 "short": "Type the reference refers to (e.g. \"Patient\")",
 "definition": "The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.\n\nThe type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. \"Patient\" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).",
 "comment": "This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Reference.type",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "uri"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "binding": {
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
 "valueString": "FHIRResourceTypeExt"
 }
 ],
 "strength": "extensible",
 "description": "Aa resource (or, for logical models, the URI of the logical model).",
 "valueSet": "http://hl7.org/fhir/ValueSet/resource-types"
 },
 "mapping": [
 {
 "identity": "rim",
 "map": "N/A"
 }
 ]
 },
 {
 "id": "Observation.performer.identifier",
 "path": "Observation.performer.identifier",
 "short": "Logical reference, when literal reference is not known",
 "definition": "An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.",
 "comment": "When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy. \n\nWhen both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference\n\nApplications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.\n\nReference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Reference.identifier",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "Identifier"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "rim",
 "map": ".identifier"
 }
 ]
 },
 {
 "id": "Observation.performer.display",
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable",
 "valueBoolean": true
 }
 ],
 "path": "Observation.performer.display",
 "short": "Text alternative for the resource",
 "definition": "Plain text narrative that identifies the resource in addition to the resource reference.",
 "comment": "This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Reference.display",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "string"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "rim",
 "map": "N/A"
 }
 ]
 },
 {
 "id": "Observation.value[x]",
 "path": "Observation.value[x]",
 "slicing": {
 "discriminator": [
 {
 "type": "type",
 "path": "$this"
 }
 ],
 "ordered": false,
 "rules": "closed"
 },
 "short": "Actual result",
 "definition": "The information determined as a result of making the observation, if the information has a simple value.",
 "comment": "An observation may have; 1) a single value here, 2) both a value and a set of related or component values, or 3) only a set of related or component values. If a value is present, the datatype for this element should be determined by Observation.code. A CodeableConcept with just a text would be used instead of a string if the field was usually coded, or if the type associated with the Observation.code defines a coded value. For additional guidance, see the [Notes section](http://hl7.org/fhir/r4/observation.html#notes) below.",
 "requirements": "An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Observation.value[x]",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "Quantity"
 }
 ],
 "condition": [
 "obs-7"
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "sct-concept",
 "map": "< 441742003 |Evaluation finding|"
 },
 {
 "identity": "v2",
 "map": "OBX.2, OBX.5, OBX.6"
 },
 {
 "identity": "rim",
 "map": "value"
 },
 {
 "identity": "sct-attr",
 "map": "363714003 |Interprets|"
 }
 ]
 },
 {
 "id": "Observation.value[x]:valueQuantity",
 "path": "Observation.value[x]",
 "sliceName": "valueQuantity",
 "short": "The total number of regional lymph nodes that were excised and examined by the pathologist",
 "definition": "The information determined as a result of making the observation, if the information has a simple value.",
 "comment": "An observation may have; 1) a single value here, 2) both a value and a set of related or component values, or 3) only a set of related or component values. If a value is present, the datatype for this element should be determined by Observation.code. A CodeableConcept with just a text would be used instead of a string if the field was usually coded, or if the type associated with the Observation.code defines a coded value. For additional guidance, see the [Notes section](http://hl7.org/fhir/r4/observation.html#notes) below.",
 "requirements": "An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Observation.value[x]",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "Quantity"
 }
 ],
 "condition": [
 "obs-7"
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "sct-concept",
 "map": "< 441742003 |Evaluation finding|"
 },
 {
 "identity": "v2",
 "map": "OBX.2, OBX.5, OBX.6"
 },
 {
 "identity": "rim",
 "map": "value"
 },
 {
 "identity": "sct-attr",
 "map": "363714003 |Interprets|"
 }
 ]
 },
 {
 "id": "Observation.value[x]:valueQuantity.id",
 "path": "Observation.value[x].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": "Observation.value[x]:valueQuantity.extension",
 "path": "Observation.value[x].extension",
 "slicing": {
 "discriminator": [
 {
 "type": "value",
 "path": "url"
 }
 ],
 "description": "Extensions are always sliced by (at least) url",
 "rules": "open"
 },
 "short": "Additional content defined by implementations",
 "definition": "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 manageable, 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.",
 "comment": "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.",
 "alias": [
 "extensions",
 "user content"
 ],
 "min": 0,
 "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"
 },
 {
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "mapping": [
 {
 "identity": "rim",
 "map": "n/a"
 }
 ]
 },
 {
 "id": "Observation.value[x]:valueQuantity.value",
 "path": "Observation.value[x].value",
 "short": "Numerical value (with implicit precision)",
 "definition": "The value of the measured amount. The value includes an implicit precision in the presentation of the value.",
 "comment": "The implicit precision in the value should always be honored. Monetary values have their own rules for handling precision (refer to standard accounting text books).",
 "requirements": "Precision is handled implicitly in almost all cases of measurement.",
 "min": 1,
 "max": "1",
 "base": {
 "path": "Quantity.value",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "decimal"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "v2",
 "map": "SN.2 / CQ - N/A"
 },
 {
 "identity": "rim",
 "map": "PQ.value, CO.value, MO.value, IVL.high or IVL.low depending on the value"
 }
 ]
 },
 {
 "id": "Observation.value[x]:valueQuantity.comparator",
 "path": "Observation.value[x].comparator",
 "short": "< | <= | >= | > - how to understand the value",
 "definition": "How the value should be understood and represented - whether the actual value is greater or less than the stated value due to measurement issues; e.g. if the comparator is \"<\" , then the real value is < stated value.",
 "requirements": "Need a framework for handling measures where the value is <5ug/L or >400mg/L due to the limitations of measuring methodology.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Quantity.comparator",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "code"
 }
 ],
 "meaningWhenMissing": "If there is no comparator, then there is no modification of the value",
 "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"
 }
 ],
 "isModifier": true,
 "isModifierReason": "This is labeled as \"Is Modifier\" because the comparator modifies the interpretation of the value significantly. If there is no comparator, then there is no modification of the value",
 "isSummary": true,
 "binding": {
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
 "valueString": "QuantityComparator"
 }
 ],
 "strength": "required",
 "description": "How the Quantity should be understood and represented.",
 "valueSet": "http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1"
 },
 "mapping": [
 {
 "identity": "v2",
 "map": "SN.1 / CQ.1"
 },
 {
 "identity": "rim",
 "map": "IVL properties"
 }
 ]
 },
 {
 "id": "Observation.value[x]:valueQuantity.unit",
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable",
 "valueBoolean": true
 }
 ],
 "path": "Observation.value[x].unit",
 "short": "Unit representation",
 "definition": "A human-readable form of the unit.",
 "requirements": "There are many representations for units of measure and in many contexts, particular representations are fixed and required. I.e. mcg for micrograms.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Quantity.unit",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "string"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "v2",
 "map": "(see OBX.6 etc.) / CQ.2"
 },
 {
 "identity": "rim",
 "map": "PQ.unit"
 }
 ]
 },
 {
 "id": "Observation.value[x]:valueQuantity.system",
 "path": "Observation.value[x].system",
 "short": "System that defines coded unit form",
 "definition": "The identification of the system that provides the coded form of the unit.",
 "requirements": "Need to know the system that defines the coded form of the unit.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Quantity.system",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "uri"
 }
 ],
 "condition": [
 "qty-3"
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "v2",
 "map": "(see OBX.6 etc.) / CQ.2"
 },
 {
 "identity": "rim",
 "map": "CO.codeSystem, PQ.translation.codeSystem"
 }
 ]
 },
 {
 "id": "Observation.value[x]:valueQuantity.code",
 "path": "Observation.value[x].code",
 "short": "Coded form of the unit",
 "definition": "A computer processable form of the unit in some unit representation system.",
 "comment": "The preferred system is UCUM, but SNOMED CT can also be used (for customary units) or ISO 4217 for currency. The context of use may additionally require a code from a particular system.",
 "requirements": "Need a computable form of the unit that is fixed across all forms. UCUM provides this for quantities, but SNOMED CT provides many units of interest.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Quantity.code",
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "v2",
 "map": "(see OBX.6 etc.) / CQ.2"
 },
 {
 "identity": "rim",
 "map": "PQ.code, MO.currency, PQ.translation.code"
 }
 ]
 },
 {
 "id": "Observation.dataAbsentReason",
 "path": "Observation.dataAbsentReason",
 "short": "No information whether regional lymph nodes were examined or not. OR Regional lymph nodes were examined, but no information on the number.",
 "definition": "Provides a reason why the expected value in the element Observation.value[x] is missing.",
 "comment": "Null or exceptional values can be represented two ways in FHIR Observations. One way is to simply include them in the value set and represent the exceptions in the value. For example, measurement values for a serology test could be \"detected\", \"not detected\", \"inconclusive\", or \"specimen unsatisfactory\". \n\nThe alternate way is to use the value element for actual observations and use the explicit dataAbsentReason element to record exceptional values. For example, the dataAbsentReason code \"error\" could be used when the measurement was not completed. Note that an observation may only be reported if there are values to report. For example differential cell counts values may be reported only when > 0. Because of these options, use-case agreements are required to interpret general observations for null or exceptional values.",
 "requirements": "For many results it is necessary to handle exceptional values in measurements.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Observation.dataAbsentReason",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "CodeableConcept"
 }
 ],
 "condition": [
 "obs-6"
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "binding": {
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
 "valueString": "ObservationValueAbsentReason"
 }
 ],
 "strength": "extensible",
 "description": "Codes specifying why the result (`Observation.value[x]`) is missing.",
 "valueSet": "http://hl7.org/fhir/ValueSet/data-absent-reason"
 },
 "mapping": [
 {
 "identity": "v2",
 "map": "N/A"
 },
 {
 "identity": "rim",
 "map": "value.nullFlavor"
 }
 ]
 },
 {
 "id": "Observation.dataAbsentReason.id",
 "path": "Observation.dataAbsentReason.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": "Observation.dataAbsentReason.extension",
 "path": "Observation.dataAbsentReason.extension",
 "slicing": {
 "discriminator": [
 {
 "type": "value",
 "path": "url"
 }
 ],
 "description": "Extensions are always sliced by (at least) url",
 "rules": "open"
 },
 "short": "Additional content defined by implementations",
 "definition": "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 manageable, 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.",
 "comment": "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.",
 "alias": [
 "extensions",
 "user content"
 ],
 "min": 0,
 "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"
 },
 {
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "mapping": [
 {
 "identity": "rim",
 "map": "n/a"
 }
 ]
 },
 {
 "id": "Observation.dataAbsentReason.coding",
 "path": "Observation.dataAbsentReason.coding",
 "short": "Code defined by a terminology system",
 "definition": "A reference to a code defined by a terminology system.",
 "comment": "Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.",
 "requirements": "Allows for alternative encodings within a code system, and translations to other code systems.",
 "min": 1,
 "max": "*",
 "base": {
 "path": "CodeableConcept.coding",
 "min": 0,
 "max": "*"
 },
 "type": [
 {
 "code": "Coding"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "v2",
 "map": "C*E.1-8, C*E.10-22"
 },
 {
 "identity": "rim",
 "map": "union(., ./translation)"
 },
 {
 "identity": "orim",
 "map": "fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding"
 }
 ]
 },
 {
 "id": "Observation.dataAbsentReason.coding.id",
 "path": "Observation.dataAbsentReason.coding.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": "Observation.dataAbsentReason.coding.extension",
 "path": "Observation.dataAbsentReason.coding.extension",
 "slicing": {
 "discriminator": [
 {
 "type": "value",
 "path": "url"
 }
 ],
 "description": "Extensions are always sliced by (at least) url",
 "rules": "open"
 },
 "short": "Additional content defined by implementations",
 "definition": "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 manageable, 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.",
 "comment": "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.",
 "alias": [
 "extensions",
 "user content"
 ],
 "min": 0,
 "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"
 },
 {
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "mapping": [
 {
 "identity": "rim",
 "map": "n/a"
 }
 ]
 },
 {
 "id": "Observation.dataAbsentReason.coding.system",
 "path": "Observation.dataAbsentReason.coding.system",
 "short": "Identity of the terminology system",
 "definition": "The identification of the code system that defines the meaning of the symbol in the code.",
 "comment": "The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should reference to some definition that establishes the system clearly and unambiguously.",
 "requirements": "Need to be unambiguous about the source of the definition of the symbol.",
 "min": 1,
 "max": "1",
 "base": {
 "path": "Coding.system",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "uri"
 }
 ],
 "fixedUri": "http://terminology.hl7.org/CodeSystem/data-absent-reason",
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "v2",
 "map": "C*E.3"
 },
 {
 "identity": "rim",
 "map": "./codeSystem"
 },
 {
 "identity": "orim",
 "map": "fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem"
 }
 ]
 },
 {
 "id": "Observation.dataAbsentReason.coding.version",
 "path": "Observation.dataAbsentReason.coding.version",
 "short": "Version of the system - if relevant",
 "definition": "The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged.",
 "comment": "Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Coding.version",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "string"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "v2",
 "map": "C*E.7"
 },
 {
 "identity": "rim",
 "map": "./codeSystemVersion"
 },
 {
 "identity": "orim",
 "map": "fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion"
 }
 ]
 },
 {
 "id": "Observation.dataAbsentReason.coding.code",
 "path": "Observation.dataAbsentReason.coding.code",
 "short": "Symbol in syntax defined by the system",
 "definition": "A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).",
 "requirements": "Need to refer to a particular code in the system.",
 "min": 1,
 "max": "1",
 "base": {
 "path": "Coding.code",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "code"
 }
 ],
 "fixedCode": "unknown",
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "v2",
 "map": "C*E.1"
 },
 {
 "identity": "rim",
 "map": "./code"
 },
 {
 "identity": "orim",
 "map": "fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code"
 }
 ]
 },
 {
 "id": "Observation.dataAbsentReason.coding.display",
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable",
 "valueBoolean": true
 }
 ],
 "path": "Observation.dataAbsentReason.coding.display",
 "short": "Representation defined by the system",
 "definition": "A representation of the meaning of the code in the system, following the rules of the system.",
 "requirements": "Need to be able to carry a human-readable meaning of the code for readers that do not know the system.",
 "min": 1,
 "max": "1",
 "base": {
 "path": "Coding.display",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "string"
 }
 ],
 "fixedString": "Unknown",
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "v2",
 "map": "C*E.2 - but note this is not well followed"
 },
 {
 "identity": "rim",
 "map": "CV.displayName"
 },
 {
 "identity": "orim",
 "map": "fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName"
 }
 ]
 },
 {
 "id": "Observation.dataAbsentReason.coding.userSelected",
 "path": "Observation.dataAbsentReason.coding.userSelected",
 "short": "If this coding was chosen directly by the user",
 "definition": "Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays).",
 "comment": "Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely.",
 "requirements": "This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Coding.userSelected",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "boolean"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "v2",
 "map": "Sometimes implied by being first"
 },
 {
 "identity": "rim",
 "map": "CD.codingRationale"
 },
 {
 "identity": "orim",
 "map": "fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\\#true a [ fhir:source \"true\"; fhir:target dt:CDCoding.codingRationale\\#O ]"
 }
 ]
 },
 {
 "id": "Observation.dataAbsentReason.text",
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable",
 "valueBoolean": true
 }
 ],
 "path": "Observation.dataAbsentReason.text",
 "short": "Plain text representation of the concept",
 "definition": "A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.",
 "comment": "Very often the text is the same as a displayName of one of the codings.",
 "requirements": "The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "CodeableConcept.text",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "string"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "v2",
 "map": "C*E.9. But note many systems use C*E.2 for this"
 },
 {
 "identity": "rim",
 "map": "./originalText[mediaType/code=\"text/plain\"]/data"
 },
 {
 "identity": "orim",
 "map": "fhir:CodeableConcept.text rdfs:subPropertyOf dt:CD.originalText"
 }
 ]
 },
 {
 "id": "Observation.interpretation",
 "path": "Observation.interpretation",
 "short": "High, low, normal, etc.",
 "definition": "A categorical assessment of an observation value. For example, high, low, normal.",
 "comment": "Historically used for laboratory results (known as 'abnormal flag' ), its use extends to other use cases where coded interpretations are relevant. Often reported as one or more simple compact codes this element is often placed adjacent to the result value in reports and flow sheets to signal the meaning/normalcy status of the result.",
 "requirements": "For some results, particularly numeric results, an interpretation is necessary to fully understand the significance of a result.",
 "alias": [
 "Abnormal Flag"
 ],
 "min": 0,
 "max": "*",
 "base": {
 "path": "Observation.interpretation",
 "min": 0,
 "max": "*"
 },
 "type": [
 {
 "code": "CodeableConcept"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "binding": {
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
 "valueString": "ObservationInterpretation"
 }
 ],
 "strength": "extensible",
 "description": "Codes identifying interpretations of observations.",
 "valueSet": "http://hl7.org/fhir/ValueSet/observation-interpretation"
 },
 "mapping": [
 {
 "identity": "sct-concept",
 "map": "< 260245000 |Findings values|"
 },
 {
 "identity": "v2",
 "map": "OBX-8"
 },
 {
 "identity": "rim",
 "map": "interpretationCode"
 },
 {
 "identity": "sct-attr",
 "map": "363713009 |Has interpretation|"
 }
 ]
 },
 {
 "id": "Observation.note",
 "path": "Observation.note",
 "short": "Comments about the observation",
 "definition": "Comments about the observation or the results.",
 "comment": "May include general statements about the observation, or statements about significant, unexpected or unreliable results values, or information about its source when relevant to its interpretation.",
 "requirements": "Need to be able to provide free text additional information.",
 "min": 0,
 "max": "*",
 "base": {
 "path": "Observation.note",
 "min": 0,
 "max": "*"
 },
 "type": [
 {
 "code": "Annotation"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "mapping": [
 {
 "identity": "v2",
 "map": "NTE.3 (partner NTE to OBX, or sometimes another (child?) OBX)"
 },
 {
 "identity": "rim",
 "map": "subjectOf.observationEvent[code=\"annotation\"].value"
 }
 ]
 },
 {
 "id": "Observation.bodySite",
 "path": "Observation.bodySite",
 "short": "Observed body part",
 "definition": "Indicates the site on the subject's body where the observation was made (i.e. the target site).",
 "comment": "Only used if not implicit in code found in Observation.code. In many systems, this may be represented as a related observation instead of an inline component. \n\nIf the use case requires BodySite to be handled as a separate resource (e.g. to identify and track separately) then use the standard extension[ bodySite](http://hl7.org/fhir/r4/extension-bodysite.html).",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Observation.bodySite",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "CodeableConcept"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "binding": {
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
 "valueString": "BodySite"
 }
 ],
 "strength": "example",
 "description": "Codes describing anatomical locations. May include laterality.",
 "valueSet": "http://hl7.org/fhir/ValueSet/body-site"
 },
 "mapping": [
 {
 "identity": "sct-concept",
 "map": "< 123037004 |Body structure|"
 },
 {
 "identity": "v2",
 "map": "OBX-20"
 },
 {
 "identity": "rim",
 "map": "targetSiteCode"
 },
 {
 "identity": "sct-attr",
 "map": "718497002 |Inherent location|"
 }
 ]
 },
 {
 "id": "Observation.method",
 "path": "Observation.method",
 "short": "How it was done",
 "definition": "Indicates the mechanism used to perform the observation.",
 "comment": "Only used if not implicit in code for Observation.code.",
 "requirements": "In some cases, method can impact results and is thus used for determining whether results can be compared or determining significance of results.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Observation.method",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "CodeableConcept"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "binding": {
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
 "valueString": "ObservationMethod"
 }
 ],
 "strength": "example",
 "description": "Methods for simple observations.",
 "valueSet": "http://hl7.org/fhir/ValueSet/observation-methods"
 },
 "mapping": [
 {
 "identity": "v2",
 "map": "OBX-17"
 },
 {
 "identity": "rim",
 "map": "methodCode"
 }
 ]
 },
 {
 "id": "Observation.specimen",
 "path": "Observation.specimen",
 "short": "Specimen used for this observation",
 "definition": "The specimen that was used when this observation was made.",
 "comment": "Should only be used if not implicit in code found in `Observation.code`. Observations are not made on specimens themselves; they are made on a subject, but in many cases by the means of a specimen. Note that although specimens are often involved, they are not always tracked and reported explicitly. Also note that observation resources may be used in contexts that track the specimen explicitly (e.g. Diagnostic Report).",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Observation.specimen",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "Reference",
 "targetProfile": [
 "http://hl7.org/fhir/StructureDefinition/Specimen"
 ]
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "mapping": [
 {
 "identity": "sct-concept",
 "map": "< 123038009 |Specimen|"
 },
 {
 "identity": "v2",
 "map": "SPM segment"
 },
 {
 "identity": "rim",
 "map": "participation[typeCode=SPC].specimen"
 },
 {
 "identity": "sct-attr",
 "map": "704319004 |Inherent in|"
 }
 ]
 },
 {
 "id": "Observation.device",
 "path": "Observation.device",
 "short": "(Measurement) Device",
 "definition": "The device used to generate the observation data.",
 "comment": "Note that this is not meant to represent a device involved in the transmission of the result, e.g., a gateway. Such devices may be documented using the Provenance resource where relevant.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Observation.device",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "Reference",
 "targetProfile": [
 "http://hl7.org/fhir/StructureDefinition/Device",
 "http://hl7.org/fhir/StructureDefinition/DeviceMetric"
 ]
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "mapping": [
 {
 "identity": "sct-concept",
 "map": "< 49062001 |Device|"
 },
 {
 "identity": "v2",
 "map": "OBX-17 / PRT -10"
 },
 {
 "identity": "rim",
 "map": "participation[typeCode=DEV]"
 },
 {
 "identity": "sct-attr",
 "map": "424226004 |Using device|"
 }
 ]
 },
 {
 "id": "Observation.referenceRange",
 "path": "Observation.referenceRange",
 "short": "Provides guide for interpretation",
 "definition": "Guidance on how to interpret the value by comparison to a normal or recommended range. Multiple reference ranges are interpreted as an \"OR\". In other words, to represent two distinct target populations, two `referenceRange` elements would be used.",
 "comment": "Most observations only have one generic reference range. Systems MAY choose to restrict to only supplying the relevant reference range based on knowledge about the patient (e.g., specific to the patient's age, gender, weight and other factors), but this might not be possible or appropriate. Whenever more than one reference range is supplied, the differences between them SHOULD be provided in the reference range and/or age properties.",
 "requirements": "Knowing what values are considered \"normal\" can help evaluate the significance of a particular result. Need to be able to provide multiple reference ranges for different contexts.",
 "min": 0,
 "max": "*",
 "base": {
 "path": "Observation.referenceRange",
 "min": 0,
 "max": "*"
 },
 "type": [
 {
 "code": "BackboneElement"
 }
 ],
 "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"
 },
 {
 "key": "obs-3",
 "severity": "error",
 "human": "Must have at least a low or a high or text",
 "expression": "low.exists() or high.exists() or text.exists()",
 "xpath": "(exists(f:low) or exists(f:high)or exists(f:text))"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "mapping": [
 {
 "identity": "v2",
 "map": "OBX.7"
 },
 {
 "identity": "rim",
 "map": "outboundRelationship[typeCode=REFV]/target[classCode=OBS, moodCode=EVN]"
 }
 ]
 },
 {
 "id": "Observation.referenceRange.id",
 "path": "Observation.referenceRange.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": "Observation.referenceRange.extension",
 "path": "Observation.referenceRange.extension",
 "short": "Additional content defined by implementations",
 "definition": "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 manageable, 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.",
 "comment": "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.",
 "alias": [
 "extensions",
 "user content"
 ],
 "min": 0,
 "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"
 },
 {
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "mapping": [
 {
 "identity": "rim",
 "map": "n/a"
 }
 ]
 },
 {
 "id": "Observation.referenceRange.modifierExtension",
 "path": "Observation.referenceRange.modifierExtension",
 "short": "Extensions that cannot be ignored even if unrecognized",
 "definition": "May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, 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. Applications processing a resource are required to check for modifier extensions.\n\nModifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).",
 "comment": "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.",
 "requirements": "Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/r4/extensibility.html#modifierExtension).",
 "alias": [
 "extensions",
 "user content",
 "modifiers"
 ],
 "min": 0,
 "max": "*",
 "base": {
 "path": "BackboneElement.modifierExtension",
 "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"
 },
 {
 "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"
 }
 ],
 "isModifier": true,
 "isModifierReason": "Modifier extensions are expected to modify the meaning or interpretation of the element that contains them",
 "isSummary": true,
 "mapping": [
 {
 "identity": "rim",
 "map": "N/A"
 }
 ]
 },
 {
 "id": "Observation.referenceRange.low",
 "path": "Observation.referenceRange.low",
 "short": "Low Range, if relevant",
 "definition": "The value of the low bound of the reference range. The low bound of the reference range endpoint is inclusive of the value (e.g. reference range is >=5 - <=9). If the low bound is omitted, it is assumed to be meaningless (e.g. reference range is <=2.3).",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Observation.referenceRange.low",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "Quantity",
 "profile": [
 "http://hl7.org/fhir/StructureDefinition/SimpleQuantity"
 ]
 }
 ],
 "condition": [
 "obs-3"
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "mapping": [
 {
 "identity": "v2",
 "map": "OBX-7"
 },
 {
 "identity": "rim",
 "map": "value:IVL_PQ.low"
 }
 ]
 },
 {
 "id": "Observation.referenceRange.high",
 "path": "Observation.referenceRange.high",
 "short": "High Range, if relevant",
 "definition": "The value of the high bound of the reference range. The high bound of the reference range endpoint is inclusive of the value (e.g. reference range is >=5 - <=9). If the high bound is omitted, it is assumed to be meaningless (e.g. reference range is >= 2.3).",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Observation.referenceRange.high",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "Quantity",
 "profile": [
 "http://hl7.org/fhir/StructureDefinition/SimpleQuantity"
 ]
 }
 ],
 "condition": [
 "obs-3"
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "mapping": [
 {
 "identity": "v2",
 "map": "OBX-7"
 },
 {
 "identity": "rim",
 "map": "value:IVL_PQ.high"
 }
 ]
 },
 {
 "id": "Observation.referenceRange.type",
 "path": "Observation.referenceRange.type",
 "short": "Reference range qualifier",
 "definition": "Codes to indicate the what part of the targeted reference population it applies to. For example, the normal or therapeutic range.",
 "comment": "This SHOULD be populated if there is more than one range. If this element is not present then the normal range is assumed.",
 "requirements": "Need to be able to say what kind of reference range this is - normal, recommended, therapeutic, etc., - for proper interpretation.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Observation.referenceRange.type",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "CodeableConcept"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "binding": {
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
 "valueString": "ObservationRangeMeaning"
 }
 ],
 "strength": "preferred",
 "description": "Code for the meaning of a reference range.",
 "valueSet": "http://hl7.org/fhir/ValueSet/referencerange-meaning"
 },
 "mapping": [
 {
 "identity": "sct-concept",
 "map": "< 260245000 |Findings values| OR \r< 365860008 |General clinical state finding| \rOR \r< 250171008 |Clinical history or observation findings| OR \r< 415229000 |Racial group| OR \r< 365400002 |Finding of puberty stage| OR\r< 443938003 |Procedure carried out on subject|"
 },
 {
 "identity": "v2",
 "map": "OBX-10"
 },
 {
 "identity": "rim",
 "map": "interpretationCode"
 }
 ]
 },
 {
 "id": "Observation.referenceRange.appliesTo",
 "path": "Observation.referenceRange.appliesTo",
 "short": "Reference range population",
 "definition": "Codes to indicate the target population this reference range applies to. For example, a reference range may be based on the normal population or a particular sex or race. Multiple `appliesTo` are interpreted as an \"AND\" of the target populations. For example, to represent a target population of African American females, both a code of female and a code for African American would be used.",
 "comment": "This SHOULD be populated if there is more than one range. If this element is not present then the normal population is assumed.",
 "requirements": "Need to be able to identify the target population for proper interpretation.",
 "min": 0,
 "max": "*",
 "base": {
 "path": "Observation.referenceRange.appliesTo",
 "min": 0,
 "max": "*"
 },
 "type": [
 {
 "code": "CodeableConcept"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "binding": {
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
 "valueString": "ObservationRangeType"
 }
 ],
 "strength": "example",
 "description": "Codes identifying the population the reference range applies to.",
 "valueSet": "http://hl7.org/fhir/ValueSet/referencerange-appliesto"
 },
 "mapping": [
 {
 "identity": "sct-concept",
 "map": "< 260245000 |Findings values| OR \r< 365860008 |General clinical state finding| \rOR \r< 250171008 |Clinical history or observation findings| OR \r< 415229000 |Racial group| OR \r< 365400002 |Finding of puberty stage| OR\r< 443938003 |Procedure carried out on subject|"
 },
 {
 "identity": "v2",
 "map": "OBX-10"
 },
 {
 "identity": "rim",
 "map": "interpretationCode"
 }
 ]
 },
 {
 "id": "Observation.referenceRange.age",
 "path": "Observation.referenceRange.age",
 "short": "Applicable age range, if relevant",
 "definition": "The age at which this reference range is applicable. This is a neonatal age (e.g. number of weeks at term) if the meaning says so.",
 "requirements": "Some analytes vary greatly over age.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Observation.referenceRange.age",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "Range"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "mapping": [
 {
 "identity": "rim",
 "map": "outboundRelationship[typeCode=PRCN].targetObservationCriterion[code=\"age\"].value"
 }
 ]
 },
 {
 "id": "Observation.referenceRange.text",
 "path": "Observation.referenceRange.text",
 "short": "Text based reference range in an observation",
 "definition": "Text based reference range in an observation which may be used when a quantitative range is not appropriate for an observation. An example would be a reference value of \"Negative\" or a list or table of \"normals\".",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Observation.referenceRange.text",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "string"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "mapping": [
 {
 "identity": "v2",
 "map": "OBX-7"
 },
 {
 "identity": "rim",
 "map": "value:ST"
 }
 ]
 },
 {
 "id": "Observation.hasMember",
 "path": "Observation.hasMember",
 "short": "Related resource that belongs to the Observation group",
 "definition": "This observation is a group observation (e.g. a battery, a panel of tests, a set of vital sign measurements) that includes the target as a member of the group.",
 "comment": "When using this element, an observation will typically have either a value or a set of related resources, although both may be present in some cases. For a discussion on the ways Observations can assembled in groups together, see [Notes](http://hl7.org/fhir/r4/observation.html#obsgrouping) below. Note that a system may calculate results from [QuestionnaireResponse](http://hl7.org/fhir/r4/questionnaireresponse.html) into a final score and represent the score as an Observation.",
 "min": 0,
 "max": "*",
 "base": {
 "path": "Observation.hasMember",
 "min": 0,
 "max": "*"
 },
 "type": [
 {
 "code": "Reference",
 "targetProfile": [
 "http://hl7.org/fhir/StructureDefinition/Observation",
 "http://hl7.org/fhir/StructureDefinition/QuestionnaireResponse",
 "http://hl7.org/fhir/StructureDefinition/MolecularSequence"
 ]
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "v2",
 "map": "Relationships established by OBX-4 usage"
 },
 {
 "identity": "rim",
 "map": "outBoundRelationship"
 }
 ]
 },
 {
 "id": "Observation.derivedFrom",
 "path": "Observation.derivedFrom",
 "short": "Related measurements the observation is made from",
 "definition": "The target resource that represents a measurement from which this observation value is derived. For example, a calculated anion gap or a fetal measurement based on an ultrasound image.",
 "comment": "All the reference choices that are listed in this element can represent clinical observations and other measurements that may be the source for a derived value. The most common reference will be another Observation. For a discussion on the ways Observations can assembled in groups together, see [Notes](http://hl7.org/fhir/r4/observation.html#obsgrouping) below.",
 "min": 0,
 "max": "*",
 "base": {
 "path": "Observation.derivedFrom",
 "min": 0,
 "max": "*"
 },
 "type": [
 {
 "code": "Reference",
 "targetProfile": [
 "http://hl7.org/fhir/StructureDefinition/DocumentReference",
 "http://hl7.org/fhir/StructureDefinition/ImagingStudy",
 "http://hl7.org/fhir/StructureDefinition/Media",
 "http://hl7.org/fhir/StructureDefinition/QuestionnaireResponse",
 "http://hl7.org/fhir/StructureDefinition/Observation",
 "http://hl7.org/fhir/StructureDefinition/MolecularSequence"
 ]
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "v2",
 "map": "Relationships established by OBX-4 usage"
 },
 {
 "identity": "rim",
 "map": ".targetObservation"
 }
 ]
 },
 {
 "id": "Observation.component",
 "path": "Observation.component",
 "short": "Component results",
 "definition": "Some observations have multiple component observations. These component observations are expressed as separate code value pairs that share the same attributes. Examples include systolic and diastolic component observations for blood pressure measurement and multiple component observations for genetics observations.",
 "comment": "For a discussion on the ways Observations can be assembled in groups together see [Notes](http://hl7.org/fhir/r4/observation.html#notes) below.",
 "requirements": "Component observations share the same attributes in the Observation resource as the primary observation and are always treated a part of a single observation (they are not separable). However, the reference range for the primary observation value is not inherited by the component values and is required when appropriate for each component observation.",
 "min": 0,
 "max": "*",
 "base": {
 "path": "Observation.component",
 "min": 0,
 "max": "*"
 },
 "type": [
 {
 "code": "BackboneElement"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "v2",
 "map": "containment by OBX-4?"
 },
 {
 "identity": "rim",
 "map": "outBoundRelationship[typeCode=COMP]"
 }
 ]
 },
 {
 "id": "Observation.component.id",
 "path": "Observation.component.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": "Observation.component.extension",
 "path": "Observation.component.extension",
 "short": "Additional content defined by implementations",
 "definition": "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 manageable, 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.",
 "comment": "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.",
 "alias": [
 "extensions",
 "user content"
 ],
 "min": 0,
 "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"
 },
 {
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "mapping": [
 {
 "identity": "rim",
 "map": "n/a"
 }
 ]
 },
 {
 "id": "Observation.component.modifierExtension",
 "path": "Observation.component.modifierExtension",
 "short": "Extensions that cannot be ignored even if unrecognized",
 "definition": "May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, 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. Applications processing a resource are required to check for modifier extensions.\n\nModifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).",
 "comment": "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.",
 "requirements": "Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/r4/extensibility.html#modifierExtension).",
 "alias": [
 "extensions",
 "user content",
 "modifiers"
 ],
 "min": 0,
 "max": "*",
 "base": {
 "path": "BackboneElement.modifierExtension",
 "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"
 },
 {
 "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"
 }
 ],
 "isModifier": true,
 "isModifierReason": "Modifier extensions are expected to modify the meaning or interpretation of the element that contains them",
 "isSummary": true,
 "mapping": [
 {
 "identity": "rim",
 "map": "N/A"
 }
 ]
 },
 {
 "id": "Observation.component.code",
 "path": "Observation.component.code",
 "short": "Type of component observation (code / type)",
 "definition": "Describes what was observed. Sometimes this is called the observation \"code\".",
 "comment": "*All* code-value and component.code-component.value pairs need to be taken into account to correctly understand the meaning of the observation.",
 "requirements": "Knowing what kind of observation is being made is essential to understanding the observation.",
 "min": 1,
 "max": "1",
 "base": {
 "path": "Observation.component.code",
 "min": 1,
 "max": "1"
 },
 "type": [
 {
 "code": "CodeableConcept"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "binding": {
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
 "valueString": "ObservationCode"
 }
 ],
 "strength": "example",
 "description": "Codes identifying names of simple observations.",
 "valueSet": "http://hl7.org/fhir/ValueSet/observation-codes"
 },
 "mapping": [
 {
 "identity": "w5",
 "map": "FiveWs.what[x]"
 },
 {
 "identity": "sct-concept",
 "map": "< 363787002 |Observable entity| OR \r< 386053000 |Evaluation procedure|"
 },
 {
 "identity": "v2",
 "map": "OBX-3"
 },
 {
 "identity": "rim",
 "map": "code"
 }
 ]
 },
 {
 "id": "Observation.component.value[x]",
 "path": "Observation.component.value[x]",
 "short": "Actual component result",
 "definition": "The information determined as a result of making the observation, if the information has a simple value.",
 "comment": "Used when observation has a set of component observations. An observation may have both a value (e.g. an Apgar score) and component observations (the observations from which the Apgar score was derived). If a value is present, the datatype for this element should be determined by Observation.code. A CodeableConcept with just a text would be used instead of a string if the field was usually coded, or if the type associated with the Observation.code defines a coded value. For additional guidance, see the [Notes section](http://hl7.org/fhir/r4/observation.html#notes) below.",
 "requirements": "An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Observation.component.value[x]",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "Quantity"
 },
 {
 "code": "CodeableConcept"
 },
 {
 "code": "string"
 },
 {
 "code": "boolean"
 },
 {
 "code": "integer"
 },
 {
 "code": "Range"
 },
 {
 "code": "Ratio"
 },
 {
 "code": "SampledData"
 },
 {
 "code": "time"
 },
 {
 "code": "dateTime"
 },
 {
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": true,
 "mapping": [
 {
 "identity": "sct-concept",
 "map": "363714003 |Interprets| < 441742003 |Evaluation finding|"
 },
 {
 "identity": "v2",
 "map": "OBX.2, OBX.5, OBX.6"
 },
 {
 "identity": "rim",
 "map": "value"
 },
 {
 "identity": "sct-attr",
 "map": "363714003 |Interprets|"
 }
 ]
 },
 {
 "id": "Observation.component.dataAbsentReason",
 "path": "Observation.component.dataAbsentReason",
 "short": "Why the component result is missing",
 "definition": "Provides a reason why the expected value in the element Observation.component.value[x] is missing.",
 "comment": "\"Null\" or exceptional values can be represented two ways in FHIR Observations. One way is to simply include them in the value set and represent the exceptions in the value. For example, measurement values for a serology test could be \"detected\", \"not detected\", \"inconclusive\", or \"test not done\". \n\nThe alternate way is to use the value element for actual observations and use the explicit dataAbsentReason element to record exceptional values. For example, the dataAbsentReason code \"error\" could be used when the measurement was not completed. Because of these options, use-case agreements are required to interpret general observations for exceptional values.",
 "requirements": "For many results it is necessary to handle exceptional values in measurements.",
 "min": 0,
 "max": "1",
 "base": {
 "path": "Observation.component.dataAbsentReason",
 "min": 0,
 "max": "1"
 },
 "type": [
 {
 "code": "CodeableConcept"
 }
 ],
 "condition": [
 "obs-6"
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "binding": {
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
 "valueString": "ObservationValueAbsentReason"
 }
 ],
 "strength": "extensible",
 "description": "Codes specifying why the result (`Observation.value[x]`) is missing.",
 "valueSet": "http://hl7.org/fhir/ValueSet/data-absent-reason"
 },
 "mapping": [
 {
 "identity": "v2",
 "map": "N/A"
 },
 {
 "identity": "rim",
 "map": "value.nullFlavor"
 }
 ]
 },
 {
 "id": "Observation.component.interpretation",
 "path": "Observation.component.interpretation",
 "short": "High, low, normal, etc.",
 "definition": "A categorical assessment of an observation value. For example, high, low, normal.",
 "comment": "Historically used for laboratory results (known as 'abnormal flag' ), its use extends to other use cases where coded interpretations are relevant. Often reported as one or more simple compact codes this element is often placed adjacent to the result value in reports and flow sheets to signal the meaning/normalcy status of the result.",
 "requirements": "For some results, particularly numeric results, an interpretation is necessary to fully understand the significance of a result.",
 "alias": [
 "Abnormal Flag"
 ],
 "min": 0,
 "max": "*",
 "base": {
 "path": "Observation.component.interpretation",
 "min": 0,
 "max": "*"
 },
 "type": [
 {
 "code": "CodeableConcept"
 }
 ],
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "binding": {
 "extension": [
 {
 "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
 "valueString": "ObservationInterpretation"
 }
 ],
 "strength": "extensible",
 "description": "Codes identifying interpretations of observations.",
 "valueSet": "http://hl7.org/fhir/ValueSet/observation-interpretation"
 },
 "mapping": [
 {
 "identity": "sct-concept",
 "map": "< 260245000 |Findings values|"
 },
 {
 "identity": "v2",
 "map": "OBX-8"
 },
 {
 "identity": "rim",
 "map": "interpretationCode"
 },
 {
 "identity": "sct-attr",
 "map": "363713009 |Has interpretation|"
 }
 ]
 },
 {
 "id": "Observation.component.referenceRange",
 "path": "Observation.component.referenceRange",
 "short": "Provides guide for interpretation of component result",
 "definition": "Guidance on how to interpret the value by comparison to a normal or recommended range.",
 "comment": "Most observations only have one generic reference range. Systems MAY choose to restrict to only supplying the relevant reference range based on knowledge about the patient (e.g., specific to the patient's age, gender, weight and other factors), but this might not be possible or appropriate. Whenever more than one reference range is supplied, the differences between them SHOULD be provided in the reference range and/or age properties.",
 "requirements": "Knowing what values are considered \"normal\" can help evaluate the significance of a particular result. Need to be able to provide multiple reference ranges for different contexts.",
 "min": 0,
 "max": "*",
 "base": {
 "path": "Observation.component.referenceRange",
 "min": 0,
 "max": "*"
 },
 "contentReference": "#Observation.referenceRange",
 "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"
 }
 ],
 "isModifier": false,
 "isSummary": false,
 "mapping": [
 {
 "identity": "v2",
 "map": "OBX.7"
 },
 {
 "identity": "rim",
 "map": "outboundRelationship[typeCode=REFV]/target[classCode=OBS, moodCode=EVN]"
 }
 ]
 }
 ]
 },
 "differential": {
 "element": [
 {
 "id": "Observation",
 "path": "Observation",
 "short": "CH CRL Observation Number of Examined Regional Lymph Nodes",
 "mapping": [
 {
 "identity": "NICER-A",
 "map": "Number of examined regional lymph nodes (Variable number: 4.12)"
 }
 ]
 },
 {
 "id": "Observation.code",
 "path": "Observation.code",
 "min": 1,
 "patternCodeableConcept": {
 "coding": [
 {
 "system": "http://loinc.org",
 "code": "21894-1",
 "display": "Regional lymph nodes examined [#] Specimen"
 }
 ]
 }
 },
 {
 "id": "Observation.subject",
 "path": "Observation.subject",
 "short": "Patient",
 "min": 1,
 "type": [
 {
 "code": "Reference",
 "targetProfile": [
 "http://fhir.ch/ig/ch-crl/StructureDefinition/ch-crl-patient"
 ]
 }
 ]
 },
 {
 "id": "Observation.subject.reference",
 "path": "Observation.subject.reference",
 "min": 1
 },
 {
 "id": "Observation.effectiveDateTime",
 "path": "Observation.effectiveDateTime",
 "min": 1,
 "type": [
 {
 "code": "dateTime"
 }
 ]
 },
 {
 "id": "Observation.performer",
 "path": "Observation.performer",
 "short": "Practitioner if resident physician or Organization Department if hospital",
 "type": [
 {
 "code": "Reference",
 "targetProfile": [
 "http://fhir.ch/ig/ch-crl/StructureDefinition/ch-crl-practitioner",
 "http://fhir.ch/ig/ch-crl/StructureDefinition/ch-crl-organization-department"
 ]
 }
 ]
 },
 {
 "id": "Observation.performer.reference",
 "path": "Observation.performer.reference",
 "min": 1
 },
 {
 "id": "Observation.valueQuantity",
 "path": "Observation.valueQuantity",
 "short": "The total number of regional lymph nodes that were excised and examined by the pathologist",
 "type": [
 {
 "code": "Quantity"
 }
 ]
 },
 {
 "id": "Observation.valueQuantity.value",
 "path": "Observation.valueQuantity.value",
 "min": 1
 },
 {
 "id": "Observation.dataAbsentReason",
 "path": "Observation.dataAbsentReason",
 "short": "No information whether regional lymph nodes were examined or not. OR Regional lymph nodes were examined, but no information on the number."
 },
 {
 "id": "Observation.dataAbsentReason.coding",
 "path": "Observation.dataAbsentReason.coding",
 "min": 1,
 "max": "*"
 },
 {
 "id": "Observation.dataAbsentReason.coding.system",
 "path": "Observation.dataAbsentReason.coding.system",
 "min": 1,
 "fixedUri": "http://terminology.hl7.org/CodeSystem/data-absent-reason"
 },
 {
 "id": "Observation.dataAbsentReason.coding.code",
 "path": "Observation.dataAbsentReason.coding.code",
 "min": 1,
 "fixedCode": "unknown"
 },
 {
 "id": "Observation.dataAbsentReason.coding.display",
 "path": "Observation.dataAbsentReason.coding.display",
 "min": 1,
 "fixedString": "Unknown"
 }
 ]
 }
}

name : CHCRLObservationNumberExaminedRegionalLymphNodes

{

}