HL7 FHIR Implementation Guide: Breast Cancer Data, Release 1 - US Realm (Draft for Comment 2)

HER2ReceptorStatusModel

{
  "resourceType" : "StructureDefinition",
  "id" : "oncology-HER2ReceptorStatus-model",
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n  <p><b>BC HER2ReceptorStatus Logical Model</b></p>\n  <p>HER2 receptor status. HER2 is a member of the human epidermal growth factor receptor family of proteins and is encoded by the ERBB2 oncogene. HER2 is overexpressed in 20-30% of breast tumors, and is associated with an aggressive clinical course and poor prognosis. HER2 status (positive=present or overexpressed; negative=absent) is a factor in determining prognosis and treatment options.</p>\n</div>"
  },
  "url" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/oncology-HER2ReceptorStatus-model",
  "identifier" : [
    {
      "system" : "http://hl7.org/fhir/us/breastcancer",
      "value" : "oncology.HER2ReceptorStatus"
    }
  ],
  "version" : "0.2.0",
  "name" : "HER2ReceptorStatusModel",
  "title" : "BC HER2ReceptorStatus Logical Model",
  "status" : "draft",
  "date" : "2018-08-17T00:00:00+00:00",
  "publisher" : "The HL7 Cancer Interoperability Group sponsored by Clinical Interoperability Council Work Group (CIC)",
  "contact" : [
    {
      "telecom" : [
        {
          "system" : "url",
          "value" : "http://www.hl7.org/Special/committees/cic/index.cfm"
        }
      ]
    }
  ],
  "description" : "HER2 receptor status. HER2 is a member of the human epidermal growth factor receptor family of proteins and is encoded by the ERBB2 oncogene. HER2 is overexpressed in 20-30% of breast tumors, and is associated with an aggressive clinical course and poor prognosis. HER2 status (positive=present or overexpressed; negative=absent) is a factor in determining prognosis and treatment options.",
  "keyword" : [
    {
      "system" : "http://loinc.org",
      "code" : "48676-1",
      "display" : "HER2 [Interpretation] in Tissue"
    }
  ],
  "kind" : "logical",
  "abstract" : false,
  "type" : "oncology-HER2ReceptorStatus-model",
  "baseDefinition" : "http://hl7.org/fhir/StructureDefinition/Element",
  "derivation" : "specialization",
  "snapshot" : {
    "element" : [
      {
        "id" : "oncology-HER2ReceptorStatus-model",
        "path" : "oncology-HER2ReceptorStatus-model",
        "definition" : "HER2 receptor status. HER2 is a member of the human epidermal growth factor receptor family of proteins and is encoded by the ERBB2 oncogene. HER2 is overexpressed in 20-30% of breast tumors, and is associated with an aggressive clinical course and poor prognosis. HER2 status (positive=present or overexpressed; negative=absent) is a factor in determining prognosis and treatment options.",
        "min" : 0,
        "max" : "*",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model",
          "min" : 0,
          "max" : "*"
        },
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.personOfRecord",
        "path" : "oncology-HER2ReceptorStatus-model.personOfRecord",
        "short" : "The person this entry belongs to.",
        "definition" : "The person this entry belongs to.",
        "min" : 1,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.personOfRecord",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "Reference",
            "targetProfile" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-core-PersonOfRecord-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic",
        "short" : "The topic composition for laboratory observations. A specimen is required, anatomical location is excluded (since the specimen indicates the collection body site). Also includes a diagnostic service (indicating the type of laboratory), not present in general observations.",
        "definition" : "The topic composition for laboratory observations. A specimen is required, anatomical location is excluded (since the specimen indicates the collection body site). Also includes a diagnostic service (indicating the type of laboratory), not present in general observations.",
        "min" : 1,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "BackboneElement"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode",
        "short" : "The concept representing the finding or action that is the topic of the statement.",
        "definition" : "The concept representing the finding or action that is the topic of the statement.\n\nFor action topics, the TopicCode represents the action being described. For findings, the TopicCode represents the 'question' or property being investigated. For evaluation result findings, the TopicCode contains a concept for an observable entity, such as systolic blood pressure. For assertion findings, the TopicCode contains a code representing the condition, allergy, or other item being asserted. In all cases, the TopicCode describes the topic independent of the context of the action or the finding.",
        "min" : 1,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "Coding"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.id",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.id",
        "representation" : [
          "xmlAttr"
        ],
        "short" : "xml:id (or equivalent in JSON)",
        "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" : [
          {
            "code" : "string"
          }
        ],
        "mapping" : [
          {
            "identity" : "rim",
            "map" : "n/a"
          }
        ]
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.extension",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.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. In order 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.",
        "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.",
        "min" : 0,
        "max" : "*",
        "base" : {
          "path" : "Element.extension",
          "min" : 0,
          "max" : "*"
        },
        "type" : [
          {
            "code" : "Extension"
          }
        ],
        "mapping" : [
          {
            "identity" : "rim",
            "map" : "n/a"
          }
        ]
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.system",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.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 de-reference to some definition that establish 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://loinc.org",
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.version",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.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"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.code",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.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" : "48676-1",
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.display",
        "extension" : [
          {
            "url" : "http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable",
            "valueBoolean" : true
          }
        ],
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.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" : 0,
        "max" : "1",
        "base" : {
          "path" : "Coding.display",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "string"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.userSelected",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.userSelected",
        "short" : "If this coding was chosen directly by the user",
        "definition" : "Indicates that this coding was chosen by a user directly - i.e. 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"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.findingMethod",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.findingMethod",
        "short" : "The technique used to create the finding, for example, the specific imaging technical, lab test code, or assessment vehicle.",
        "definition" : "The technique used to create the finding, for example, the specific imaging technical, lab test code, or assessment vehicle.",
        "min" : 0,
        "max" : "0",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.findingMethod",
          "min" : 0,
          "max" : "0"
        },
        "type" : [
          {
            "code" : "Coding"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false,
        "binding" : {
          "strength" : "preferred",
          "valueSetReference" : {
            "reference" : "http://loinc.org/vs"
          }
        }
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.details",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.details",
        "code" : [
          {
            "system" : "http://ncimeta.nci.nih.gov",
            "code" : "C0947611"
          }
        ],
        "short" : "A text note containing additional details, explanation, description, comment, or summarization. Details can discuss, support, explain changes to, or dispute information.",
        "definition" : "A text note containing additional details, explanation, description, comment, or summarization. Details can discuss, support, explain changes to, or dispute information.",
        "min" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.details",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "string"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.media",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.media",
        "short" : "A file that contains audio, video, image, or similar content.",
        "definition" : "A file that contains audio, video, image, or similar content.",
        "min" : 0,
        "max" : "0",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.media",
          "min" : 0,
          "max" : "0"
        },
        "type" : [
          {
            "code" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/shr-core-Media-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category",
        "short" : "A class or division of people or things having particular shared characteristics",
        "definition" : "A class or division of people or things having particular shared characteristics",
        "min" : 1,
        "max" : "*",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category",
          "min" : 1,
          "max" : "*"
        },
        "type" : [
          {
            "code" : "Coding"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.id",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.id",
        "representation" : [
          "xmlAttr"
        ],
        "short" : "xml:id (or equivalent in JSON)",
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.id",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "string"
          }
        ],
        "mapping" : [
          {
            "identity" : "rim",
            "map" : "n/a"
          }
        ]
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.extension",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.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. In order 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.",
        "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.",
        "min" : 0,
        "max" : "*",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.extension",
          "min" : 0,
          "max" : "*"
        },
        "type" : [
          {
            "code" : "Extension"
          }
        ],
        "mapping" : [
          {
            "identity" : "rim",
            "map" : "n/a"
          }
        ]
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.system",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.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 de-reference to some definition that establish 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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.system",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "uri"
          }
        ],
        "fixedUri" : "http://hl7.org/fhir/observation-category",
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.version",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.version",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "string"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.code",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.code",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "code"
          }
        ],
        "fixedCode" : "laboratory",
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.display",
        "extension" : [
          {
            "url" : "http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable",
            "valueBoolean" : true
          }
        ],
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.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" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.display",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "string"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.userSelected",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.userSelected",
        "short" : "If this coding was chosen directly by the user",
        "definition" : "Indicates that this coding was chosen by a user directly - i.e. 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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.userSelected",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "boolean"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.anatomicalLocation",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.anatomicalLocation",
        "code" : [
          {
            "system" : "http://loinc.org",
            "code" : "72369-2"
          }
        ],
        "short" : "A location or structure in the body, including tissues, regions, cavities, and spaces; for example, right elbow, or left ventricle of the heart.",
        "definition" : "A location or structure in the body, including tissues, regions, cavities, and spaces; for example, right elbow, or left ventricle of the heart.",
        "min" : 0,
        "max" : "0",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.anatomicalLocation",
          "min" : 0,
          "max" : "0"
        },
        "type" : [
          {
            "code" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-element-AnatomicalLocation-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.device",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.device",
        "short" : "A specific durable physical device used in diagnosis or treatment. The value is the coding for a type of device, for example, a CPAP machine. The same device might be used on multiple patients.",
        "definition" : "A specific durable physical device used in diagnosis or treatment. The value is the coding for a type of device, for example, a CPAP machine. The same device might be used on multiple patients.",
        "min" : 0,
        "max" : "0",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.device",
          "min" : 0,
          "max" : "0"
        },
        "type" : [
          {
            "code" : "Reference",
            "targetProfile" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-entity-Device-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.breastSpecimen",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.breastSpecimen",
        "short" : "Specimen resulting from biopsy or excision of breast and surrounding tissue.",
        "definition" : "Specimen resulting from biopsy or excision of breast and surrounding tissue.",
        "min" : 1,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.breastSpecimen",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "Reference",
            "targetProfile" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/oncology-BreastSpecimen-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.precondition",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.precondition",
        "short" : "A description of the conditions or context of an observation, for example, under sedation, fasting or post-exercise. Body position and body site are also qualifiers, but handled separately. A qualifier cannot modify the measurement type; for example, a fasting blood sugar is still a blood sugar.",
        "definition" : "A description of the conditions or context of an observation, for example, under sedation, fasting or post-exercise. Body position and body site are also qualifiers, but handled separately. A qualifier cannot modify the measurement type; for example, a fasting blood sugar is still a blood sugar.",
        "min" : 0,
        "max" : "0",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.precondition",
          "min" : 0,
          "max" : "0"
        },
        "type" : [
          {
            "code" : "Coding"
          },
          {
            "code" : "Reference",
            "targetProfile" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-statement-Observation-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.referenceRange",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.referenceRange",
        "code" : [
          {
            "system" : "http://ncimeta.nci.nih.gov",
            "code" : "C0883335"
          }
        ],
        "short" : "The usual or acceptable range for a test result.",
        "definition" : "The usual or acceptable range for a test result.",
        "min" : 0,
        "max" : "0",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.referenceRange",
          "min" : 0,
          "max" : "0"
        },
        "type" : [
          {
            "code" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-topic-ReferenceRange-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.evaluationComponent",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.evaluationComponent",
        "short" : "A simplified, non-separable evaluation consisting of a finding code (represented by the Concept), value (or exception value), reference range, and interpretation. The subject of the evaluation component is the same as in the parent evaluation.",
        "definition" : "A simplified, non-separable evaluation consisting of a finding code (represented by the Concept), value (or exception value), reference range, and interpretation. The subject of the evaluation component is the same as in the parent evaluation.",
        "min" : 0,
        "max" : "0",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.evaluationComponent",
          "min" : 0,
          "max" : "0"
        },
        "type" : [
          {
            "code" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-topic-EvaluationComponent-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers",
        "short" : "PanelMembers represent the elements of a group of a related but independent evaluations.",
        "definition" : "PanelMembers represent the elements of a group of a related but independent evaluations.\nExamples are the measurements that compose a complete blood count (CBC), or the elements of a pathology report. Each member is an independent evaluation, but the grouping reflects a composite lab order, shared specimen, or a single report author. Typically the Category and Reason are not given for individual findings that are part of the panel, but rather given at the level of the panel itself.",
        "min" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "BackboneElement"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers.observation",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers.observation",
        "short" : "Represents the result of evaluations (measurements, tests, or questions) that have been performed.",
        "definition" : "Represents the result of evaluations (measurements, tests, or questions) that have been performed.\nObservation has a value representing the result (answer), or an ExceptionValue indicating why the value is not present. The subject of a finding can be the entire patient, or an entity such as a location body structure, intervention, or condition. Things observed about the subject can include social and behavioral factors, subjective and objective observations, and assessments.",
        "min" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers.observation",
          "min" : 0,
          "max" : "1"
        },
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers.observation.hER2byIHC",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers.observation.hER2byIHC",
        "code" : [
          {
            "system" : "http://loinc.org",
            "code" : "85319-2",
            "display" : "HER2 [Presence] in Breast cancer specimen by Immune stain"
          }
        ],
        "short" : "HER2 presence in Breast cancer specimen by Immunohistochemistry (IHC).",
        "definition" : "HER2 presence in Breast cancer specimen by Immunohistochemistry (IHC).",
        "min" : 0,
        "max" : "*",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers.observation.hER2byIHC",
          "min" : 0,
          "max" : "*"
        },
        "type" : [
          {
            "code" : "Reference",
            "targetProfile" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/oncology-HER2byIHC-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers.observation.hER2byFISH",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers.observation.hER2byFISH",
        "code" : [
          {
            "system" : "http://loinc.org",
            "code" : "85318-4",
            "display" : "HER2 [Presence] in Breast cancer specimen by FISH"
          }
        ],
        "short" : "HER2 receptor status as determined by single-probe or dual-probe Fluorescence In Situ Hybridization (FISH).",
        "definition" : "HER2 receptor status as determined by single-probe or dual-probe Fluorescence In Situ Hybridization (FISH).",
        "min" : 0,
        "max" : "*",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers.observation.hER2byFISH",
          "min" : 0,
          "max" : "*"
        },
        "type" : [
          {
            "code" : "Reference",
            "targetProfile" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/oncology-HER2byFISH-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService",
        "short" : "The service completing the observations, e.g. biochemistry, microbiology, blood bank.",
        "definition" : "The service completing the observations, e.g. biochemistry, microbiology, blood bank.",
        "min" : 0,
        "max" : "*",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService",
          "min" : 0,
          "max" : "*"
        },
        "type" : [
          {
            "code" : "Coding"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.id",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.id",
        "representation" : [
          "xmlAttr"
        ],
        "short" : "xml:id (or equivalent in JSON)",
        "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" : [
          {
            "code" : "string"
          }
        ],
        "mapping" : [
          {
            "identity" : "rim",
            "map" : "n/a"
          }
        ]
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.extension",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.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. In order 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.",
        "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.",
        "min" : 0,
        "max" : "*",
        "base" : {
          "path" : "Element.extension",
          "min" : 0,
          "max" : "*"
        },
        "type" : [
          {
            "code" : "Extension"
          }
        ],
        "mapping" : [
          {
            "identity" : "rim",
            "map" : "n/a"
          }
        ]
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.system",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.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 de-reference to some definition that establish 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://hl7.org/fhir/v2/0074",
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.version",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.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"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.code",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.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" : "PAT",
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.display",
        "extension" : [
          {
            "url" : "http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable",
            "valueBoolean" : true
          }
        ],
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.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" : 0,
        "max" : "1",
        "base" : {
          "path" : "Coding.display",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "string"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.userSelected",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.userSelected",
        "short" : "If this coding was chosen directly by the user",
        "definition" : "Indicates that this coding was chosen by a user directly - i.e. 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"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.observationContext",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext",
        "short" : "Context for recording an evaluation result, used to indicate an evaluation has been made.",
        "definition" : "Context for recording an evaluation result, used to indicate an evaluation has been made.",
        "min" : 1,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "BackboneElement"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode",
        "short" : "A code representing the ontological status of the statement, e.g., whether it exists, does not exist, is planned, etc.",
        "definition" : "A code representing the ontological status of the statement, e.g., whether it exists, does not exist, is planned, etc.\nAttribute aligns with the SNOMED CT Situation with Explicit Context (SWEC) Concept Model context attributes: 'Finding context (attribute)' (SCTID: 408729009) and 'Procedure context (attribute)' (SCTID: 408730004). The range allowed for this attribute shall be consistent with the SNOMED CT concept model specification for SWEC.",
        "min" : 1,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "Coding"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.id",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.id",
        "representation" : [
          "xmlAttr"
        ],
        "short" : "xml:id (or equivalent in JSON)",
        "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" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.id",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "string"
          }
        ],
        "mapping" : [
          {
            "identity" : "rim",
            "map" : "n/a"
          }
        ]
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.extension",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.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. In order 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.",
        "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.",
        "min" : 0,
        "max" : "*",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.extension",
          "min" : 0,
          "max" : "*"
        },
        "type" : [
          {
            "code" : "Extension"
          }
        ],
        "mapping" : [
          {
            "identity" : "rim",
            "map" : "n/a"
          }
        ]
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.system",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.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 de-reference to some definition that establish 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" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.system",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "uri"
          }
        ],
        "fixedUri" : "http://snomed.info/sct",
        "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" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.version",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.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" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.version",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "string"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.code",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.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" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.code",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "code"
          }
        ],
        "fixedCode" : "424975005",
        "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" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.display",
        "extension" : [
          {
            "url" : "http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable",
            "valueBoolean" : true
          }
        ],
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.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" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.display",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "string"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.userSelected",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.userSelected",
        "short" : "If this coding was chosen directly by the user",
        "definition" : "Indicates that this coding was chosen by a user directly - i.e. 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" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.userSelected",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "boolean"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.observationContext.encounter",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.encounter",
        "short" : "A description of an interaction between a patient and healthcare provider(s) for the purpose of providing healthcare service(s) or assessing the health status of a patient.",
        "definition" : "A description of an interaction between a patient and healthcare provider(s) for the purpose of providing healthcare service(s) or assessing the health status of a patient.",
        "min" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.encounter",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-encounter-Encounter-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.interpretation",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.interpretation",
        "code" : [
          {
            "system" : "http://ncimeta.nci.nih.gov",
            "code" : "C0420833"
          }
        ],
        "short" : "A clinical interpretation of a finding (applies to both assertions and observation).",
        "definition" : "A clinical interpretation of a finding (applies to both assertions and observation).",
        "min" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.interpretation",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "Coding"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false,
        "binding" : {
          "strength" : "extensible",
          "valueSetReference" : {
            "reference" : "http://hl7.org/fhir/ValueSet/observation-interpretation"
          }
        }
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.findingStatus",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.findingStatus",
        "short" : "Indicates whether the finding is preliminary, amended, final, etc.",
        "definition" : "Indicates whether the finding is preliminary, amended, final, etc.",
        "min" : 1,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.findingStatus",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "code"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false,
        "binding" : {
          "strength" : "required",
          "valueSetReference" : {
            "reference" : "http://hl7.org/fhir/ValueSet/observation-status"
          }
        }
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.relevantTime",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.relevantTime",
        "short" : "The time or time period that the finding addresses.",
        "definition" : "The time or time period that the finding addresses.\nThe clinically relevant time is not necessarily when the information is gathered or when a test is carried out, but for example, when a specimen was collected, or the time period referred to by the question. Use a TimePeriod for a measurement or specimen collection continued over a significant period of time (e.g. 24 hour Urine Sodium).",
        "min" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.relevantTime",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "dateTime"
          },
          {
            "code" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/shr-core-TimePeriod-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.resultValue",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.resultValue",
        "short" : "The finding itself, such as the blood pressure value recorded.",
        "definition" : "The finding itself, such as the blood pressure value recorded.",
        "min" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.resultValue",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "Coding"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false,
        "binding" : {
          "strength" : "required",
          "valueSetReference" : {
            "reference" : "http://hl7.org/fhir/us/breastcancer/ValueSet/shr-core-PositiveNegativeEquivocalIndeterminateVS"
          }
        }
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.exceptionValue",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.exceptionValue",
        "short" : "Reason that a value associated with a test or other finding is missing.",
        "definition" : "Reason that a value associated with a test or other finding is missing.",
        "min" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.exceptionValue",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "Coding"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false,
        "binding" : {
          "strength" : "extensible",
          "valueSetReference" : {
            "reference" : "http://hl7.org/fhir/ValueSet/data-absent-reason"
          }
        }
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.deltaFlag",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.deltaFlag",
        "code" : [
          {
            "system" : "http://ncimeta.nci.nih.gov",
            "code" : "C1705241"
          }
        ],
        "short" : "Indicator of significant change (delta) from the last or previous measurement.",
        "definition" : "Indicator of significant change (delta) from the last or previous measurement.",
        "min" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.deltaFlag",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "Coding"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false,
        "binding" : {
          "strength" : "required",
          "valueSetReference" : {
            "reference" : "http://hl7.org/fhir/us/breastcancer/ValueSet/cimi-context-DeltaFlagVS"
          }
        }
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.issued",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.issued",
        "short" : "The date and time this observation was made available to providers, typically after the results have been reviewed and verified.",
        "definition" : "The date and time this observation was made available to providers, typically after the results have been reviewed and verified.",
        "min" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.issued",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "instant"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.observer",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.observer",
        "short" : "The person or organization who observed or informed the reporter about the characteristic, potentially the clinician, the patient, or a related person.",
        "definition" : "The person or organization who observed or informed the reporter about the characteristic, potentially the clinician, the patient, or a related person.",
        "min" : 0,
        "max" : "*",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.observer",
          "min" : 0,
          "max" : "*"
        },
        "type" : [
          {
            "code" : "Reference",
            "targetProfile" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-entity-Practitioner-model"
          },
          {
            "code" : "Reference",
            "targetProfile" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-entity-Organization-model"
          },
          {
            "code" : "Reference",
            "targetProfile" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-entity-Patient-model"
          },
          {
            "code" : "Reference",
            "targetProfile" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-entity-RelatedPerson-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      }
    ]
  },
  "differential" : {
    "element" : [
      {
        "id" : "oncology-HER2ReceptorStatus-model",
        "path" : "oncology-HER2ReceptorStatus-model",
        "definition" : "HER2 receptor status. HER2 is a member of the human epidermal growth factor receptor family of proteins and is encoded by the ERBB2 oncogene. HER2 is overexpressed in 20-30% of breast tumors, and is associated with an aggressive clinical course and poor prognosis. HER2 status (positive=present or overexpressed; negative=absent) is a factor in determining prognosis and treatment options.",
        "min" : 0,
        "max" : "*",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model",
          "min" : 0,
          "max" : "*"
        },
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.personOfRecord",
        "path" : "oncology-HER2ReceptorStatus-model.personOfRecord",
        "short" : "The person this entry belongs to.",
        "definition" : "The person this entry belongs to.",
        "min" : 1,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.personOfRecord",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "Reference",
            "targetProfile" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-core-PersonOfRecord-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic",
        "short" : "The topic composition for laboratory observations. A specimen is required, anatomical location is excluded (since the specimen indicates the collection body site). Also includes a diagnostic service (indicating the type of laboratory), not present in general observations.",
        "definition" : "The topic composition for laboratory observations. A specimen is required, anatomical location is excluded (since the specimen indicates the collection body site). Also includes a diagnostic service (indicating the type of laboratory), not present in general observations.",
        "min" : 1,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "BackboneElement"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode",
        "short" : "The concept representing the finding or action that is the topic of the statement.",
        "definition" : "The concept representing the finding or action that is the topic of the statement.\n\nFor action topics, the TopicCode represents the action being described. For findings, the TopicCode represents the 'question' or property being investigated. For evaluation result findings, the TopicCode contains a concept for an observable entity, such as systolic blood pressure. For assertion findings, the TopicCode contains a code representing the condition, allergy, or other item being asserted. In all cases, the TopicCode describes the topic independent of the context of the action or the finding.",
        "min" : 1,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "Coding"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.id",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.id",
        "representation" : [
          "xmlAttr"
        ],
        "short" : "xml:id (or equivalent in JSON)",
        "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" : [
          {
            "code" : "string"
          }
        ],
        "mapping" : [
          {
            "identity" : "rim",
            "map" : "n/a"
          }
        ]
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.extension",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.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. In order 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.",
        "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.",
        "min" : 0,
        "max" : "*",
        "base" : {
          "path" : "Element.extension",
          "min" : 0,
          "max" : "*"
        },
        "type" : [
          {
            "code" : "Extension"
          }
        ],
        "mapping" : [
          {
            "identity" : "rim",
            "map" : "n/a"
          }
        ]
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.system",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.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 de-reference to some definition that establish 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://loinc.org",
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.version",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.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"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.code",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.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" : "48676-1",
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.display",
        "extension" : [
          {
            "url" : "http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable",
            "valueBoolean" : true
          }
        ],
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.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" : 0,
        "max" : "1",
        "base" : {
          "path" : "Coding.display",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "string"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.userSelected",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.topicCode.userSelected",
        "short" : "If this coding was chosen directly by the user",
        "definition" : "Indicates that this coding was chosen by a user directly - i.e. 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"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.findingMethod",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.findingMethod",
        "short" : "The technique used to create the finding, for example, the specific imaging technical, lab test code, or assessment vehicle.",
        "definition" : "The technique used to create the finding, for example, the specific imaging technical, lab test code, or assessment vehicle.",
        "min" : 0,
        "max" : "0",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.findingMethod",
          "min" : 0,
          "max" : "0"
        },
        "type" : [
          {
            "code" : "Coding"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false,
        "binding" : {
          "strength" : "preferred",
          "valueSetReference" : {
            "reference" : "http://loinc.org/vs"
          }
        }
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.details",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.details",
        "code" : [
          {
            "system" : "http://ncimeta.nci.nih.gov",
            "code" : "C0947611"
          }
        ],
        "short" : "A text note containing additional details, explanation, description, comment, or summarization. Details can discuss, support, explain changes to, or dispute information.",
        "definition" : "A text note containing additional details, explanation, description, comment, or summarization. Details can discuss, support, explain changes to, or dispute information.",
        "min" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.details",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "string"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.media",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.media",
        "short" : "A file that contains audio, video, image, or similar content.",
        "definition" : "A file that contains audio, video, image, or similar content.",
        "min" : 0,
        "max" : "0",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.media",
          "min" : 0,
          "max" : "0"
        },
        "type" : [
          {
            "code" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/shr-core-Media-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category",
        "short" : "A class or division of people or things having particular shared characteristics",
        "definition" : "A class or division of people or things having particular shared characteristics",
        "min" : 1,
        "max" : "*",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category",
          "min" : 1,
          "max" : "*"
        },
        "type" : [
          {
            "code" : "Coding"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.id",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.id",
        "representation" : [
          "xmlAttr"
        ],
        "short" : "xml:id (or equivalent in JSON)",
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.id",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "string"
          }
        ],
        "mapping" : [
          {
            "identity" : "rim",
            "map" : "n/a"
          }
        ]
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.extension",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.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. In order 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.",
        "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.",
        "min" : 0,
        "max" : "*",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.extension",
          "min" : 0,
          "max" : "*"
        },
        "type" : [
          {
            "code" : "Extension"
          }
        ],
        "mapping" : [
          {
            "identity" : "rim",
            "map" : "n/a"
          }
        ]
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.system",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.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 de-reference to some definition that establish 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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.system",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "uri"
          }
        ],
        "fixedUri" : "http://hl7.org/fhir/observation-category",
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.version",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.version",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "string"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.code",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.code",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "code"
          }
        ],
        "fixedCode" : "laboratory",
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.display",
        "extension" : [
          {
            "url" : "http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable",
            "valueBoolean" : true
          }
        ],
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.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" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.display",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "string"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.userSelected",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.userSelected",
        "short" : "If this coding was chosen directly by the user",
        "definition" : "Indicates that this coding was chosen by a user directly - i.e. 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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.category.userSelected",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "boolean"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.anatomicalLocation",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.anatomicalLocation",
        "code" : [
          {
            "system" : "http://loinc.org",
            "code" : "72369-2"
          }
        ],
        "short" : "A location or structure in the body, including tissues, regions, cavities, and spaces; for example, right elbow, or left ventricle of the heart.",
        "definition" : "A location or structure in the body, including tissues, regions, cavities, and spaces; for example, right elbow, or left ventricle of the heart.",
        "min" : 0,
        "max" : "0",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.anatomicalLocation",
          "min" : 0,
          "max" : "0"
        },
        "type" : [
          {
            "code" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-element-AnatomicalLocation-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.device",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.device",
        "short" : "A specific durable physical device used in diagnosis or treatment. The value is the coding for a type of device, for example, a CPAP machine. The same device might be used on multiple patients.",
        "definition" : "A specific durable physical device used in diagnosis or treatment. The value is the coding for a type of device, for example, a CPAP machine. The same device might be used on multiple patients.",
        "min" : 0,
        "max" : "0",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.device",
          "min" : 0,
          "max" : "0"
        },
        "type" : [
          {
            "code" : "Reference",
            "targetProfile" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-entity-Device-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.breastSpecimen",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.breastSpecimen",
        "short" : "Specimen resulting from biopsy or excision of breast and surrounding tissue.",
        "definition" : "Specimen resulting from biopsy or excision of breast and surrounding tissue.",
        "min" : 1,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.breastSpecimen",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "Reference",
            "targetProfile" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/oncology-BreastSpecimen-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.precondition",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.precondition",
        "short" : "A description of the conditions or context of an observation, for example, under sedation, fasting or post-exercise. Body position and body site are also qualifiers, but handled separately. A qualifier cannot modify the measurement type; for example, a fasting blood sugar is still a blood sugar.",
        "definition" : "A description of the conditions or context of an observation, for example, under sedation, fasting or post-exercise. Body position and body site are also qualifiers, but handled separately. A qualifier cannot modify the measurement type; for example, a fasting blood sugar is still a blood sugar.",
        "min" : 0,
        "max" : "0",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.precondition",
          "min" : 0,
          "max" : "0"
        },
        "type" : [
          {
            "code" : "Coding"
          },
          {
            "code" : "Reference",
            "targetProfile" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-statement-Observation-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.referenceRange",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.referenceRange",
        "code" : [
          {
            "system" : "http://ncimeta.nci.nih.gov",
            "code" : "C0883335"
          }
        ],
        "short" : "The usual or acceptable range for a test result.",
        "definition" : "The usual or acceptable range for a test result.",
        "min" : 0,
        "max" : "0",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.referenceRange",
          "min" : 0,
          "max" : "0"
        },
        "type" : [
          {
            "code" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-topic-ReferenceRange-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.evaluationComponent",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.evaluationComponent",
        "short" : "A simplified, non-separable evaluation consisting of a finding code (represented by the Concept), value (or exception value), reference range, and interpretation. The subject of the evaluation component is the same as in the parent evaluation.",
        "definition" : "A simplified, non-separable evaluation consisting of a finding code (represented by the Concept), value (or exception value), reference range, and interpretation. The subject of the evaluation component is the same as in the parent evaluation.",
        "min" : 0,
        "max" : "0",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.evaluationComponent",
          "min" : 0,
          "max" : "0"
        },
        "type" : [
          {
            "code" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-topic-EvaluationComponent-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers",
        "short" : "PanelMembers represent the elements of a group of a related but independent evaluations.",
        "definition" : "PanelMembers represent the elements of a group of a related but independent evaluations.\nExamples are the measurements that compose a complete blood count (CBC), or the elements of a pathology report. Each member is an independent evaluation, but the grouping reflects a composite lab order, shared specimen, or a single report author. Typically the Category and Reason are not given for individual findings that are part of the panel, but rather given at the level of the panel itself.",
        "min" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "BackboneElement"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers.observation",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers.observation",
        "short" : "Represents the result of evaluations (measurements, tests, or questions) that have been performed.",
        "definition" : "Represents the result of evaluations (measurements, tests, or questions) that have been performed.\nObservation has a value representing the result (answer), or an ExceptionValue indicating why the value is not present. The subject of a finding can be the entire patient, or an entity such as a location body structure, intervention, or condition. Things observed about the subject can include social and behavioral factors, subjective and objective observations, and assessments.",
        "min" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers.observation",
          "min" : 0,
          "max" : "1"
        },
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers.observation.hER2byIHC",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers.observation.hER2byIHC",
        "code" : [
          {
            "system" : "http://loinc.org",
            "code" : "85319-2",
            "display" : "HER2 [Presence] in Breast cancer specimen by Immune stain"
          }
        ],
        "short" : "HER2 presence in Breast cancer specimen by Immunohistochemistry (IHC).",
        "definition" : "HER2 presence in Breast cancer specimen by Immunohistochemistry (IHC).",
        "min" : 0,
        "max" : "*",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers.observation.hER2byIHC",
          "min" : 0,
          "max" : "*"
        },
        "type" : [
          {
            "code" : "Reference",
            "targetProfile" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/oncology-HER2byIHC-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers.observation.hER2byFISH",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers.observation.hER2byFISH",
        "code" : [
          {
            "system" : "http://loinc.org",
            "code" : "85318-4",
            "display" : "HER2 [Presence] in Breast cancer specimen by FISH"
          }
        ],
        "short" : "HER2 receptor status as determined by single-probe or dual-probe Fluorescence In Situ Hybridization (FISH).",
        "definition" : "HER2 receptor status as determined by single-probe or dual-probe Fluorescence In Situ Hybridization (FISH).",
        "min" : 0,
        "max" : "*",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.panelMembers.observation.hER2byFISH",
          "min" : 0,
          "max" : "*"
        },
        "type" : [
          {
            "code" : "Reference",
            "targetProfile" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/oncology-HER2byFISH-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService",
        "short" : "The service completing the observations, e.g. biochemistry, microbiology, blood bank.",
        "definition" : "The service completing the observations, e.g. biochemistry, microbiology, blood bank.",
        "min" : 0,
        "max" : "*",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService",
          "min" : 0,
          "max" : "*"
        },
        "type" : [
          {
            "code" : "Coding"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.id",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.id",
        "representation" : [
          "xmlAttr"
        ],
        "short" : "xml:id (or equivalent in JSON)",
        "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" : [
          {
            "code" : "string"
          }
        ],
        "mapping" : [
          {
            "identity" : "rim",
            "map" : "n/a"
          }
        ]
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.extension",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.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. In order 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.",
        "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.",
        "min" : 0,
        "max" : "*",
        "base" : {
          "path" : "Element.extension",
          "min" : 0,
          "max" : "*"
        },
        "type" : [
          {
            "code" : "Extension"
          }
        ],
        "mapping" : [
          {
            "identity" : "rim",
            "map" : "n/a"
          }
        ]
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.system",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.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 de-reference to some definition that establish 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://hl7.org/fhir/v2/0074",
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.version",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.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"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.code",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.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" : "PAT",
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.display",
        "extension" : [
          {
            "url" : "http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable",
            "valueBoolean" : true
          }
        ],
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.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" : 0,
        "max" : "1",
        "base" : {
          "path" : "Coding.display",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "string"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.userSelected",
        "path" : "oncology-HER2ReceptorStatus-model.laboratoryObservationTopic.diagnosticService.userSelected",
        "short" : "If this coding was chosen directly by the user",
        "definition" : "Indicates that this coding was chosen by a user directly - i.e. 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"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.observationContext",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext",
        "short" : "Context for recording an evaluation result, used to indicate an evaluation has been made.",
        "definition" : "Context for recording an evaluation result, used to indicate an evaluation has been made.",
        "min" : 1,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "BackboneElement"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode",
        "short" : "A code representing the ontological status of the statement, e.g., whether it exists, does not exist, is planned, etc.",
        "definition" : "A code representing the ontological status of the statement, e.g., whether it exists, does not exist, is planned, etc.\nAttribute aligns with the SNOMED CT Situation with Explicit Context (SWEC) Concept Model context attributes: 'Finding context (attribute)' (SCTID: 408729009) and 'Procedure context (attribute)' (SCTID: 408730004). The range allowed for this attribute shall be consistent with the SNOMED CT concept model specification for SWEC.",
        "min" : 1,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "Coding"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.id",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.id",
        "representation" : [
          "xmlAttr"
        ],
        "short" : "xml:id (or equivalent in JSON)",
        "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" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.id",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "string"
          }
        ],
        "mapping" : [
          {
            "identity" : "rim",
            "map" : "n/a"
          }
        ]
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.extension",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.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. In order 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.",
        "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.",
        "min" : 0,
        "max" : "*",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.extension",
          "min" : 0,
          "max" : "*"
        },
        "type" : [
          {
            "code" : "Extension"
          }
        ],
        "mapping" : [
          {
            "identity" : "rim",
            "map" : "n/a"
          }
        ]
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.system",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.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 de-reference to some definition that establish 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" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.system",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "uri"
          }
        ],
        "fixedUri" : "http://snomed.info/sct",
        "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" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.version",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.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" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.version",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "string"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.code",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.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" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.code",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "code"
          }
        ],
        "fixedCode" : "424975005",
        "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" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.display",
        "extension" : [
          {
            "url" : "http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable",
            "valueBoolean" : true
          }
        ],
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.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" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.display",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "string"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.userSelected",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.userSelected",
        "short" : "If this coding was chosen directly by the user",
        "definition" : "Indicates that this coding was chosen by a user directly - i.e. 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" : "oncology-HER2ReceptorStatus-model.observationContext.contextCode.userSelected",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "boolean"
          }
        ],
        "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" : "oncology-HER2ReceptorStatus-model.observationContext.encounter",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.encounter",
        "short" : "A description of an interaction between a patient and healthcare provider(s) for the purpose of providing healthcare service(s) or assessing the health status of a patient.",
        "definition" : "A description of an interaction between a patient and healthcare provider(s) for the purpose of providing healthcare service(s) or assessing the health status of a patient.",
        "min" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.encounter",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-encounter-Encounter-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.interpretation",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.interpretation",
        "code" : [
          {
            "system" : "http://ncimeta.nci.nih.gov",
            "code" : "C0420833"
          }
        ],
        "short" : "A clinical interpretation of a finding (applies to both assertions and observation).",
        "definition" : "A clinical interpretation of a finding (applies to both assertions and observation).",
        "min" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.interpretation",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "Coding"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false,
        "binding" : {
          "strength" : "extensible",
          "valueSetReference" : {
            "reference" : "http://hl7.org/fhir/ValueSet/observation-interpretation"
          }
        }
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.findingStatus",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.findingStatus",
        "short" : "Indicates whether the finding is preliminary, amended, final, etc.",
        "definition" : "Indicates whether the finding is preliminary, amended, final, etc.",
        "min" : 1,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.findingStatus",
          "min" : 1,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "code"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false,
        "binding" : {
          "strength" : "required",
          "valueSetReference" : {
            "reference" : "http://hl7.org/fhir/ValueSet/observation-status"
          }
        }
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.relevantTime",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.relevantTime",
        "short" : "The time or time period that the finding addresses.",
        "definition" : "The time or time period that the finding addresses.\nThe clinically relevant time is not necessarily when the information is gathered or when a test is carried out, but for example, when a specimen was collected, or the time period referred to by the question. Use a TimePeriod for a measurement or specimen collection continued over a significant period of time (e.g. 24 hour Urine Sodium).",
        "min" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.relevantTime",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "dateTime"
          },
          {
            "code" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/shr-core-TimePeriod-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.resultValue",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.resultValue",
        "short" : "The finding itself, such as the blood pressure value recorded.",
        "definition" : "The finding itself, such as the blood pressure value recorded.",
        "min" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.resultValue",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "Coding"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false,
        "binding" : {
          "strength" : "required",
          "valueSetReference" : {
            "reference" : "http://hl7.org/fhir/us/breastcancer/ValueSet/shr-core-PositiveNegativeEquivocalIndeterminateVS"
          }
        }
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.exceptionValue",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.exceptionValue",
        "short" : "Reason that a value associated with a test or other finding is missing.",
        "definition" : "Reason that a value associated with a test or other finding is missing.",
        "min" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.exceptionValue",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "Coding"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false,
        "binding" : {
          "strength" : "extensible",
          "valueSetReference" : {
            "reference" : "http://hl7.org/fhir/ValueSet/data-absent-reason"
          }
        }
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.deltaFlag",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.deltaFlag",
        "code" : [
          {
            "system" : "http://ncimeta.nci.nih.gov",
            "code" : "C1705241"
          }
        ],
        "short" : "Indicator of significant change (delta) from the last or previous measurement.",
        "definition" : "Indicator of significant change (delta) from the last or previous measurement.",
        "min" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.deltaFlag",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "Coding"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false,
        "binding" : {
          "strength" : "required",
          "valueSetReference" : {
            "reference" : "http://hl7.org/fhir/us/breastcancer/ValueSet/cimi-context-DeltaFlagVS"
          }
        }
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.issued",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.issued",
        "short" : "The date and time this observation was made available to providers, typically after the results have been reviewed and verified.",
        "definition" : "The date and time this observation was made available to providers, typically after the results have been reviewed and verified.",
        "min" : 0,
        "max" : "1",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.issued",
          "min" : 0,
          "max" : "1"
        },
        "type" : [
          {
            "code" : "instant"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      },
      {
        "id" : "oncology-HER2ReceptorStatus-model.observationContext.observer",
        "path" : "oncology-HER2ReceptorStatus-model.observationContext.observer",
        "short" : "The person or organization who observed or informed the reporter about the characteristic, potentially the clinician, the patient, or a related person.",
        "definition" : "The person or organization who observed or informed the reporter about the characteristic, potentially the clinician, the patient, or a related person.",
        "min" : 0,
        "max" : "*",
        "base" : {
          "path" : "oncology-HER2ReceptorStatus-model.observationContext.observer",
          "min" : 0,
          "max" : "*"
        },
        "type" : [
          {
            "code" : "Reference",
            "targetProfile" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-entity-Practitioner-model"
          },
          {
            "code" : "Reference",
            "targetProfile" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-entity-Organization-model"
          },
          {
            "code" : "Reference",
            "targetProfile" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-entity-Patient-model"
          },
          {
            "code" : "Reference",
            "targetProfile" : "http://hl7.org/fhir/us/breastcancer/StructureDefinition/cimi-entity-RelatedPerson-model"
          }
        ],
        "mustSupport" : false,
        "isModifier" : false,
        "isSummary" : false
      }
    ]
  }
}