{
  "resourceType": "CodeSystem",
  "id": "observation-relationshiptypes",
  "meta": {
    "lastUpdated": "2017-04-18T21:44:43.294+00:00"
  },
  "text": {
    "status": "generated",
    "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n            <h2>ObservationRelationshipType</h2>\n            <div>\n              <p>Codes specifying how two observations are related.</p>\n\n            </div>\n            <p>This code system http://hl7.org/fhir/observation-relationshiptypes defines the following codes:</p>\n            <table class=\"codes\">\n              <tr>\n                <td>\n                  <b>Code</b>\n                </td>\n                <td>\n                  <b>Display</b>\n                </td>\n                <td>\n                  <b>Definition</b>\n                </td>\n              </tr>\n              <tr>\n                <td>has-member\n                  <a name=\"observation-relationshiptypes-has-member\"> </a>\n                </td>\n                <td>Has Member</td>\n                <td>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.</td>\n              </tr>\n              <tr>\n                <td>derived-from\n                  <a name=\"observation-relationshiptypes-derived-from\"> </a>\n                </td>\n                <td>Derived From</td>\n                <td>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:  &quot;derived-from&quot; is the only logical choice when referencing QuestionnaireResponse.</td>\n              </tr>\n              <tr>\n                <td>sequel-to\n                  <a name=\"observation-relationshiptypes-sequel-to\"> </a>\n                </td>\n                <td>Sequel To</td>\n                <td>This observation follows the target observation (e.g. timed tests such as Glucose Tolerance Test).</td>\n              </tr>\n              <tr>\n                <td>replaces\n                  <a name=\"observation-relationshiptypes-replaces\"> </a>\n                </td>\n                <td>Replaces</td>\n                <td>This observation replaces a previous observation (i.e. a revised value). The target observation is now obsolete.</td>\n              </tr>\n              <tr>\n                <td>qualified-by\n                  <a name=\"observation-relationshiptypes-qualified-by\"> </a>\n                </td>\n                <td>Qualified By</td>\n                <td>The value of the target observation qualifies (refines) the semantics of the source observation (e.g. a lipemia measure target from a plasma measure).</td>\n              </tr>\n              <tr>\n                <td>interfered-by\n                  <a name=\"observation-relationshiptypes-interfered-by\"> </a>\n                </td>\n                <td>Interfered By</td>\n                <td>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).</td>\n              </tr>\n            </table>\n          </div>"
  },
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-ballot-status",
      "valueString": "Informative"
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
      "valueInteger": 5
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
      "valueCode": "oo"
    }
  ],
  "url": "http://hl7.org/fhir/observation-relationshiptypes",
  "identifier": {
    "system": "urn:ietf:rfc:3986",
    "value": "urn:oid:2.16.840.1.113883.4.642.1.390"
  },
  "version": "3.0.1",
  "name": "ObservationRelationshipType",
  "status": "draft",
  "experimental": false,
  "date": "2017-04-18T21:44:43+00:00",
  "publisher": "HL7 (FHIR Project)",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://hl7.org/fhir"
        },
        {
          "system": "email",
          "value": "fhir@lists.hl7.org"
        }
      ]
    }
  ],
  "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 the 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)."
    }
  ]
}