{
  "description": "Visual field observation additional codes",
  "_filename": "CodeSystem-visual-field-observations.json",
  "package_name": "hl7.fhir.uv.eyecare",
  "date": "2021-08-07",
  "versionNeeded": true,
  "publisher": "HL7 International - Patient Care WG",
  "jurisdiction": [ {
    "coding": [ {
      "code": "001",
      "system": "http://unstats.un.org/unsd/methods/m49/m49.htm"
    } ]
  } ],
  "content": "complete",
  "name": "OphthalmologyVisualFieldObservations",
  "copyright": "HL7",
  "type": null,
  "experimental": null,
  "resourceType": "CodeSystem",
  "title": "Visual field test parameter observations",
  "package_version": "0.1.0",
  "compositional": false,
  "status": "draft",
  "id": "1d482f59-ca0e-443a-ae32-0ba28c2e27ac",
  "kind": null,
  "url": "http://hl7.org/fhir/uv/eyecare/CodeSystem/visual-field-observations",
  "concept": [ {
    "code": "400204",
    "display": "Fixation loss",
    "definition": "Fixation loss occurs when the patient reports seeing a stimulus that is presented in the predicted area of the physiologic blind spot"
  }, {
    "code": "400202",
    "display": "False positive percent",
    "definition": "Percentage of false positive responses"
  }, {
    "code": "400203",
    "display": "False negative percent",
    "definition": "Percentage of false negative reponses"
  }, {
    "code": "400205",
    "display": "False positive ratio",
    "definition": "Ratio of false positive responses to total responses"
  }, {
    "code": "400206",
    "display": "False negative ratio",
    "definition": "Ratio of false negative responses to total responses"
  } ],
  "caseSensitive": true,
  "version": "0.1.0",
  "contact": [ {
    "name": "HL7 International - Patient Care",
    "telecom": [ {
      "value": "http://www.hl7.org/Special/committees/patientcare",
      "system": "url"
    } ]
  } ]
}