Definition for Code SystemDataAbsentReason

{
  "resourceType" : "CodeSystem",
  "id" : "data-absent-reason",
  "meta" : {
    "lastUpdated" : "2022-09-07T10:58:29.429+10:00"
  },
  "text" : {
    "status" : "extensions",
    "div" : "<div>!-- Snipped for Brevity --></div>"
  },
  "extension" : [{
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode" : "oo"
  },
  {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
    "valueCode" : "normative"
  },
  {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
    "valueCode" : "4.0.0"
  },
  {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
    "valueInteger" : 5
  }],
  "url" : "http://terminology.hl7.org/CodeSystem/data-absent-reason",
  "identifier" : [{
    "system" : "urn:ietf:rfc:3986",
    "value" : "urn:oid:2.16.840.1.113883.4.642.4.1048"
  }],
  "version" : "5.0.0-ballot",
  "name" : "DataAbsentReason",
  "title" : "DataAbsentReason",
  "status" : "active",
  "experimental" : false,
  "date" : "2022-09-07T10:58:29+10:00",
  "description" : "Used to specify why the normally expected content of the data element is missing.",
  "caseSensitive" : true,
  "valueSet" : "http://hl7.org/fhir/ValueSet/data-absent-reason",
  "content" : "complete",
  "concept" : [{
    "code" : "unknown",
    "display" : "Unknown",
    "definition" : "The value is expected to exist but is not known.",
    "concept" : [{
      "code" : "asked-unknown",
      "display" : "Asked But Unknown",
      "definition" : "The source was asked but does not know the value."
    },
    {
      "code" : "temp-unknown",
      "display" : "Temporarily Unknown",
      "definition" : "There is reason to expect (from the workflow) that the value may become known."
    },
    {
      "code" : "not-asked",
      "display" : "Not Asked",
      "definition" : "The workflow didn't lead to this value being known."
    },
    {
      "code" : "asked-declined",
      "display" : "Asked But Declined",
      "definition" : "The source was asked but declined to answer."
    }]
  },
  {
    "extension" : [{
      "url" : "http://hl7.org/fhir/StructureDefinition/codesystem-concept-comments",
      "valueString" : "Using \"masked\" may be breach of security or confidentiality, but there are times when its use is required to support alternate workflows for gaining access to denied information."
    }],
    "code" : "masked",
    "display" : "Masked",
    "definition" : "The information is not available due to security, privacy or related reasons."
  },
  {
    "code" : "not-applicable",
    "display" : "Not Applicable",
    "definition" : "There is no proper value for this element (e.g. last menstrual period for a male)."
  },
  {
    "code" : "unsupported",
    "display" : "Unsupported",
    "definition" : "The source system wasn't capable of supporting this element."
  },
  {
    "extension" : [{
      "url" : "http://hl7.org/fhir/StructureDefinition/codesystem-concept-comments",
      "valueString" : "It may be linked by internal references (e.g. xml:id). This usually implies that the value could not be represented in the correct format - this may be due to system limitations, or this particular data value."
    }],
    "code" : "as-text",
    "display" : "As Text",
    "definition" : "The content of the data is represented in the resource narrative."
  },
  {
    "code" : "error",
    "display" : "Error",
    "definition" : "Some system or workflow process error means that the information is not available.",
    "concept" : [{
      "extension" : [{
        "url" : "http://hl7.org/fhir/StructureDefinition/codesystem-concept-comments",
        "valueString" : "This is sometimes an output value from measuring devices."
      }],
      "code" : "not-a-number",
      "display" : "Not a Number (NaN)",
      "definition" : "The numeric value is undefined or unrepresentable due to a floating point processing error."
    },
    {
      "extension" : [{
        "url" : "http://hl7.org/fhir/StructureDefinition/codesystem-concept-comments",
        "valueString" : "This is sometimes an output value from measuring devices."
      }],
      "code" : "negative-infinity",
      "display" : "Negative Infinity (NINF)",
      "definition" : "The numeric value is excessively low and unrepresentable due to a floating point processing error."
    },
    {
      "extension" : [{
        "url" : "http://hl7.org/fhir/StructureDefinition/codesystem-concept-comments",
        "valueString" : "This is sometimes an output value from measuring devices."
      }],
      "code" : "positive-infinity",
      "display" : "Positive Infinity (PINF)",
      "definition" : "The numeric value is excessively high and unrepresentable due to a floating point processing error."
    }]
  },
  {
    "code" : "not-performed",
    "display" : "Not Performed",
    "definition" : "The value is not available because the observation procedure (test, etc.) was not performed."
  },
  {
    "extension" : [{
      "url" : "http://hl7.org/fhir/StructureDefinition/codesystem-concept-comments",
      "valueString" : "This is most often associated with required bindings that do not include the actual code used, but may be used with other data types."
    }],
    "code" : "not-permitted",
    "display" : "Not Permitted",
    "definition" : "The value is not permitted in this context (e.g. due to profiles, or the base data types)."
  }]
}