{
  "resourceType" : "CodeSystem",
  "id" : "data-absent-reason",
  "text" : {
    "status" : "extensions",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n            <p>This code system http://terminology.hl7.org/CodeSystem/data-absent-reason defines the following codes:</p>\n            <table class=\"codes\">\n              <tr>\n                <td>\n                  <b>Lvl</b>\n                </td>\n                <td style=\"white-space:nowrap\">\n                  <b>Code</b>\n                </td>\n                <td>\n                  <b>Display</b>\n                </td>\n                <td>\n                  <b>Definition</b>\n                </td>\n                <td>\n                  <b>Comments</b>\n                </td>\n              </tr>\n              <tr>\n                <td>1</td>\n                <td style=\"white-space:nowrap\">unknown\n                  <a name=\"data-absent-reason-unknown\"> </a>\n                </td>\n                <td>Unknown</td>\n                <td>The value is expected to exist but is not known.</td>\n                <td/>\n              </tr>\n              <tr>\n                <td>2</td>\n                <td style=\"white-space:nowrap\">\u00a0\u00a0asked-unknown\n                  <a name=\"data-absent-reason-asked-unknown\"> </a>\n                </td>\n                <td>Asked But Unknown</td>\n                <td>The source was asked but does not know the value.</td>\n                <td/>\n              </tr>\n              <tr>\n                <td>2</td>\n                <td style=\"white-space:nowrap\">\u00a0\u00a0temp-unknown\n                  <a name=\"data-absent-reason-temp-unknown\"> </a>\n                </td>\n                <td>Temporarily Unknown</td>\n                <td>There is reason to expect (from the workflow) that the value may become known.</td>\n                <td/>\n              </tr>\n              <tr>\n                <td>2</td>\n                <td style=\"white-space:nowrap\">\u00a0\u00a0not-asked\n                  <a name=\"data-absent-reason-not-asked\"> </a>\n                </td>\n                <td>Not Asked</td>\n                <td>The workflow didn't lead to this value being known.</td>\n                <td/>\n              </tr>\n              <tr>\n                <td>2</td>\n                <td style=\"white-space:nowrap\">\u00a0\u00a0asked-declined\n                  <a name=\"data-absent-reason-asked-declined\"> </a>\n                </td>\n                <td>Asked But Declined</td>\n                <td>The source was asked but declined to answer.</td>\n                <td/>\n              </tr>\n              <tr>\n                <td>1</td>\n                <td style=\"white-space:nowrap\">masked\n                  <a name=\"data-absent-reason-masked\"> </a>\n                </td>\n                <td>Masked</td>\n                <td>The information is not available due to security, privacy or related reasons.</td>\n                <td>Using &quot;masked&quot; 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.</td>\n              </tr>\n              <tr>\n                <td>1</td>\n                <td style=\"white-space:nowrap\">not-applicable\n                  <a name=\"data-absent-reason-not-applicable\"> </a>\n                </td>\n                <td>Not Applicable</td>\n                <td>There is no proper value for this element (e.g. last menstrual period for a male).</td>\n                <td/>\n              </tr>\n              <tr>\n                <td>1</td>\n                <td style=\"white-space:nowrap\">unsupported\n                  <a name=\"data-absent-reason-unsupported\"> </a>\n                </td>\n                <td>Unsupported</td>\n                <td>The source system wasn't capable of supporting this element.</td>\n                <td/>\n              </tr>\n              <tr>\n                <td>1</td>\n                <td style=\"white-space:nowrap\">as-text\n                  <a name=\"data-absent-reason-as-text\"> </a>\n                </td>\n                <td>As Text</td>\n                <td>The content of the data is represented in the resource narrative.</td>\n                <td>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.</td>\n              </tr>\n              <tr>\n                <td>1</td>\n                <td style=\"white-space:nowrap\">error\n                  <a name=\"data-absent-reason-error\"> </a>\n                </td>\n                <td>Error</td>\n                <td>Some system or workflow process error means that the information is not available.</td>\n                <td/>\n              </tr>\n              <tr>\n                <td>2</td>\n                <td style=\"white-space:nowrap\">\u00a0\u00a0not-a-number\n                  <a name=\"data-absent-reason-not-a-number\"> </a>\n                </td>\n                <td>Not a Number (NaN)</td>\n                <td>The numeric value is undefined or unrepresentable due to a floating point processing error.</td>\n                <td>This is sometimes an output value from measuring devices.</td>\n              </tr>\n              <tr>\n                <td>2</td>\n                <td style=\"white-space:nowrap\">\u00a0\u00a0negative-infinity\n                  <a name=\"data-absent-reason-negative-infinity\"> </a>\n                </td>\n                <td>Negative Infinity (NINF)</td>\n                <td>The numeric value is excessively low and unrepresentable due to a floating point processing error.</td>\n                <td>This is sometimes an output value from measuring devices.</td>\n              </tr>\n              <tr>\n                <td>2</td>\n                <td style=\"white-space:nowrap\">\u00a0\u00a0positive-infinity\n                  <a name=\"data-absent-reason-positive-infinity\"> </a>\n                </td>\n                <td>Positive Infinity (PINF)</td>\n                <td>The numeric value is excessively high and unrepresentable due to a floating point processing error.</td>\n                <td>This is sometimes an output value from measuring devices.</td>\n              </tr>\n              <tr>\n                <td>1</td>\n                <td style=\"white-space:nowrap\">not-performed\n                  <a name=\"data-absent-reason-not-performed\"> </a>\n                </td>\n                <td>Not Performed</td>\n                <td>The value is not available because the observation procedure (test, etc.) was not performed.</td>\n                <td/>\n              </tr>\n              <tr>\n                <td>1</td>\n                <td style=\"white-space:nowrap\">not-permitted\n                  <a name=\"data-absent-reason-not-permitted\"> </a>\n                </td>\n                <td>Not Permitted</td>\n                <td>The value is not permitted in this context (e.g. due to profiles, or the base data types).</td>\n                <td>This is most often associated with required bindings that do not include the actual code used, but may be used with other data types.</td>\n              </tr>\n            </table>\n          </div>"
  },
  "extension" : [{
    "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
  },
  {
    "extension" : [{
      "url" : "packageId",
      "valueId" : "hl7.fhir.uv.xver-r4b.r5"
    },
    {
      "url" : "version",
      "valueString" : "0.1.0"
    },
    {
      "url" : "uri",
      "valueUri" : "http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r4b.r5"
    }],
    "url" : "http://hl7.org/fhir/StructureDefinition/package-source"
  },
  {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode" : "oo"
  }],
  "url" : "http://terminology.hl7.org/CodeSystem/data-absent-reason",
  "version" : "4.3.0",
  "name" : "DataAbsentReason",
  "title" : "DataAbsentReason",
  "status" : "active",
  "experimental" : false,
  "date" : "2022-05-27T21:47:40-05:00",
  "publisher" : "Orders and Observations",
  "contact" : [{
    "name" : "Orders and Observations",
    "telecom" : [{
      "system" : "url",
      "value" : "http://www.hl7.org/Special/committees/orders"
    }]
  }],
  "description" : "Used to specify why the normally expected content of the data element is missing.",
  "jurisdiction" : [{
    "coding" : [{
      "system" : "http://unstats.un.org/unsd/methods/m49/m49.htm",
      "code" : "001",
      "display" : "World"
    }]
  }],
  "caseSensitive" : true,
  "valueSet" : "http://hl7.org/fhir/ValueSet/data-absent-reason|5.0.0",
  "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."
    }]
  },
  {
    "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."
  },
  {
    "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" : [{
      "code" : "not-a-number",
      "display" : "Not a Number (NaN)",
      "definition" : "The numeric value is undefined or unrepresentable due to a floating point processing error."
    },
    {
      "code" : "negative-infinity",
      "display" : "Negative Infinity (NINF)",
      "definition" : "The numeric value is excessively low and unrepresentable due to a floating point processing error."
    },
    {
      "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."
  },
  {
    "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)."
  }]
}