{
  "resourceType": "StructureDefinition",
  "id": "SmartAL-Observation-Frailty",
  "url": "http://alticelabs.com/fhir/StructureDefinition/SmartAL-Observation-Frailty",
  "name": "SmartALObservationFrailty",
  "title": "SmartAL Observation - Frailty Physical Assessment",
  "status": "active",
  "description": "Panel observation for frailty physical assessment including grip strength\n(left and right hand), 4-meter walk gait\nspeed test. Dominant hand is not sent to Glintt (internal to MHR).\nThis observation has no enrichment (no ObservationDefinition thresholds).",
  "fhirVersion": "4.0.1",
  "kind": "resource",
  "abstract": false,
  "type": "Observation",
  "baseDefinition": "http://alticelabs.com/fhir/StructureDefinition/SmartAL-Observation-Base",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Observation.code.coding",
        "path": "Observation.code.coding",
        "max": "1"
      },
      {
        "id": "Observation.code.coding.system",
        "path": "Observation.code.coding.system",
        "min": 1,
        "fixedUri": "http://alticelabs.com/fhir/loinc-custom"
      },
      {
        "id": "Observation.code.coding.code",
        "path": "Observation.code.coding.code",
        "min": 1,
        "fixedCode": "3000-G"
      },
      {
        "id": "Observation.code.coding.display",
        "path": "Observation.code.coding.display",
        "patternString": "Frailty Physical Assessment"
      },
      {
        "id": "Observation.value[x]",
        "path": "Observation.value[x]",
        "max": "0"
      },
      {
        "id": "Observation.component",
        "path": "Observation.component",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "code.coding.code"
            }
          ],
          "rules": "open"
        }
      },
      {
        "id": "Observation.component:gripStrengthLeft",
        "path": "Observation.component",
        "sliceName": "gripStrengthLeft",
        "short": "Grip strength - left hand (kg)",
        "min": 0,
        "max": "1",
        "mustSupport": true
      },
      {
        "id": "Observation.component:gripStrengthLeft.code.coding.system",
        "path": "Observation.component.code.coding.system",
        "fixedUri": "http://loinc.org"
      },
      {
        "id": "Observation.component:gripStrengthLeft.code.coding.code",
        "path": "Observation.component.code.coding.code",
        "min": 1,
        "fixedCode": "83173-5"
      },
      {
        "id": "Observation.component:gripStrengthLeft.code.coding.display",
        "path": "Observation.component.code.coding.display",
        "patternString": "Grip strength Hand - left Dynamometer"
      },
      {
        "id": "Observation.component:gripStrengthLeft.value[x]",
        "path": "Observation.component.value[x]",
        "type": [
          {
            "code": "Quantity"
          }
        ]
      },
      {
        "id": "Observation.component:gripStrengthLeft.value[x].system",
        "path": "Observation.component.value[x].system",
        "fixedUri": "http://unitsofmeasure.org"
      },
      {
        "id": "Observation.component:gripStrengthLeft.value[x].code",
        "path": "Observation.component.value[x].code",
        "fixedCode": "kg"
      },
      {
        "id": "Observation.component:gripStrengthRight",
        "path": "Observation.component",
        "sliceName": "gripStrengthRight",
        "short": "Grip strength - right hand (kg)",
        "min": 0,
        "max": "1",
        "mustSupport": true
      },
      {
        "id": "Observation.component:gripStrengthRight.code.coding.system",
        "path": "Observation.component.code.coding.system",
        "fixedUri": "http://loinc.org"
      },
      {
        "id": "Observation.component:gripStrengthRight.code.coding.code",
        "path": "Observation.component.code.coding.code",
        "min": 1,
        "fixedCode": "83174-3"
      },
      {
        "id": "Observation.component:gripStrengthRight.code.coding.display",
        "path": "Observation.component.code.coding.display",
        "patternString": "Grip strength Hand - right Dynamometer"
      },
      {
        "id": "Observation.component:gripStrengthRight.value[x]",
        "path": "Observation.component.value[x]",
        "type": [
          {
            "code": "Quantity"
          }
        ]
      },
      {
        "id": "Observation.component:gripStrengthRight.value[x].system",
        "path": "Observation.component.value[x].system",
        "fixedUri": "http://unitsofmeasure.org"
      },
      {
        "id": "Observation.component:gripStrengthRight.value[x].code",
        "path": "Observation.component.value[x].code",
        "fixedCode": "kg"
      },
      {
        "id": "Observation.component:gaitSpeed4m",
        "path": "Observation.component",
        "sliceName": "gaitSpeed4m",
        "short": "4-meter walk gait time (seconds)",
        "min": 0,
        "max": "1",
        "mustSupport": true
      },
      {
        "id": "Observation.component:gaitSpeed4m.code.coding.system",
        "path": "Observation.component.code.coding.system",
        "fixedUri": "http://loinc.org"
      },
      {
        "id": "Observation.component:gaitSpeed4m.code.coding.code",
        "path": "Observation.component.code.coding.code",
        "min": 1,
        "fixedCode": "83144-6"
      },
      {
        "id": "Observation.component:gaitSpeed4m.code.coding.display",
        "path": "Observation.component.code.coding.display",
        "patternString": "4-Meter Walk Gait Speed Test [NIH Toolbox]"
      },
      {
        "id": "Observation.component:gaitSpeed4m.value[x]",
        "path": "Observation.component.value[x]",
        "type": [
          {
            "code": "Quantity"
          }
        ]
      },
      {
        "id": "Observation.component:gaitSpeed4m.value[x].system",
        "path": "Observation.component.value[x].system",
        "fixedUri": "http://unitsofmeasure.org"
      },
      {
        "id": "Observation.component:gaitSpeed4m.value[x].code",
        "path": "Observation.component.value[x].code",
        "fixedCode": "s"
      }
    ]
  }
}