This page is part of the FHIR Specification (v1.4.0: STU 3 Ballot 3). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions 
Definition for Code System ObservationRelationshipType
{
"resourceType": "CodeSystem",
"id": "observation-relationshiptypes",
"meta": {
"lastUpdated": "2016-03-31T08:01:25.570+11:00"
},
"text": {
"status": "generated",
"div": "<div>!-- Snipped for Brevity --></div>"
},
"extension": [
{
"url": "http://hl7.org/fhir/StructureDefinition/valueset-oid",
"valueUri": "urn:oid:2.16.840.1.113883.4.642.1.220"
}
],
"url": "http://hl7.org/fhir/observation-relationshiptypes",
"version": "1.4.0",
"name": "ObservationRelationshipType",
"status": "draft",
"experimental": false,
"publisher": "HL7 (FHIR Project)",
"contact": [
{
"telecom": [
{
"system": "other",
"value": "http://hl7.org/fhir"
},
{
"system": "email",
"value": "fhir@lists.hl7.org"
}
]
}
],
"date": "2016-03-31T08:01:25+11:00",
"description": "Codes specifying how two observations are related.",
"caseSensitive": true,
"valueSet": "http://hl7.org/fhir/ValueSet/observation-relationshiptypes",
"content": "complete",
"concept": [
{
"code": "has-member",
"display": "Has Member",
"definition": "This observation is a group observation (e.g. a battery, a panel of tests, a set of vital sign measurements) that includes the target as a member of the group."
},
{
"code": "derived-from",
"display": "Derived From",
"definition": "The target resource (Observation or QuestionnaireResponse) is part of the information from which this observation value is derived. (e.g. calculated anion gap, Apgar score) NOTE: \"derived-from\" is only logical choice when referencing QuestionnaireResponse."
},
{
"code": "sequel-to",
"display": "Sequel To",
"definition": "This observation follows the target observation (e.g. timed tests such as Glucose Tolerance Test)."
},
{
"code": "replaces",
"display": "Replaces",
"definition": "This observation replaces a previous observation (i.e. a revised value). The target observation is now obsolete."
},
{
"code": "qualified-by",
"display": "Qualified By",
"definition": "The value of the target observation qualifies (refines) the semantics of the source observation (e.g. a lipemia measure target from a plasma measure)."
},
{
"code": "interfered-by",
"display": "Interfered By",
"definition": "The value of the target observation interferes (degrades quality, or prevents valid observation) with the semantics of the source observation (e.g. a hemolysis measure target from a plasma potassium measure which has no value)."
}
]
}
Usage note: every effort has been made to ensure that the examples are correct and useful, but they are not a normative part of the specification.