description: The US Core Simple Observation Profile meets the requirements of the US Core Data for Interoperability (USCDI) Assessments. This profile promotes interoperability and adoption through common implementation by setting minimum expectations for the Observation resource to record, search, and retrieve observations representing a practitioner's clinical observation or assertion about a patient's health status. These observations may or may not be associated with a formal survey, screening, or assessment tool. For example, a social history status such as education or food insecurity or an assessment of the patient's cognitive, functional, or disability status. This profile identifies which core elements, extensions, vocabularies, and value sets **SHALL** be present in the resource when using this profile. It provides the floor for standards development for specific use cases.
package_name: hl7.fhir.us.core
derivation: constraint
name: USCoreSimpleObservationProfile
type: Observation
elements:
  category:
    mustSupport: true
    index: 1
    slicing:
      rules: open
      discriminator:
      - {path: $this, type: pattern}
      min: 1
      slices:
        us-core:
          match: {}
          schema:
            binding: {strength: required, valueSet: 'http://hl7.org/fhir/us/core/ValueSet/us-core-simple-observation-category'}
            mustSupport: true
            index: 2
          min: 0
  derivedFrom:
    type: Reference
    short: Related Observation(s) or other resource the observation is made from
    mustSupport: true
    refers: ['http://hl7.org/fhir/StructureDefinition/ImagingStudy', 'http://hl7.org/fhir/StructureDefinition/Media', 'http://hl7.org/fhir/StructureDefinition/MolecularSequence', 'http://hl7.org/fhir/StructureDefinition/QuestionnaireResponse', 'http://hl7.org/fhir/us/core/StructureDefinition/us-core-documentreference', 'http://hl7.org/fhir/us/core/StructureDefinition/us-core-observation-screening-assessment']
    index: 25
  valueTime: {type: time, mustSupport: true, choiceOf: value, index: 22}
  valueQuantity: {type: Quantity, mustSupport: true, choiceOf: value, index: 14}
  value:
    mustSupport: true
    choices: [valueQuantity, valueCodeableConcept, valueString, valueBoolean, valueInteger, valueRange, valueRatio, valueSampledData, valueTime, valueDateTime, valuePeriod]
    index: 13
  valueString: {type: string, mustSupport: true, choiceOf: value, index: 16}
  valueRatio: {type: Ratio, mustSupport: true, choiceOf: value, index: 20}
  valueBoolean: {type: boolean, mustSupport: true, choiceOf: value, index: 17}
  valueDateTime: {type: dateTime, mustSupport: true, choiceOf: value, index: 23}
  valueSampledData: {type: SampledData, mustSupport: true, choiceOf: value, index: 21}
  effectiveDateTime: {type: dateTime, mustSupport: true, choiceOf: effective, index: 7}
  status: {mustSupport: true, index: 0}
  effective:
    mustSupport: true
    choices: [effectiveDateTime, effectivePeriod, effectiveTiming, effectiveInstant]
    index: 6
  code: {mustSupport: true, index: 3}
  effectiveTiming: {type: Timing, mustSupport: true, choiceOf: effective, index: 9}
  valueCodeableConcept: {type: CodeableConcept, mustSupport: true, choiceOf: value, index: 15}
  valuePeriod: {type: Period, mustSupport: true, choiceOf: value, index: 24}
  effectiveInstant: {type: instant, mustSupport: true, choiceOf: effective, index: 10}
  valueRange: {type: Range, mustSupport: true, choiceOf: value, index: 19}
  valueInteger: {type: integer, mustSupport: true, choiceOf: value, index: 18}
  subject:
    type: Reference
    mustSupport: true
    refers: ['http://hl7.org/fhir/us/core/StructureDefinition/us-core-patient']
    index: 4
  performer:
    type: Reference
    mustSupport: true
    refers: ['http://hl7.org/fhir/StructureDefinition/PractitionerRole', 'http://hl7.org/fhir/us/core/StructureDefinition/us-core-careteam', 'http://hl7.org/fhir/us/core/StructureDefinition/us-core-organization', 'http://hl7.org/fhir/us/core/StructureDefinition/us-core-patient', 'http://hl7.org/fhir/us/core/StructureDefinition/us-core-practitioner', 'http://hl7.org/fhir/us/core/StructureDefinition/us-core-relatedperson']
    index: 11
  effectivePeriod: {type: Period, mustSupport: true, choiceOf: effective, index: 8}
package_version: 6.0.0-ballot
class: profile
kind: resource
url: http://hl7.org/fhir/us/core/StructureDefinition/us-core-simple-observation
base: http://hl7.org/fhir/StructureDefinition/Observation
version: 6.0.0-ballot
required: [subject, category]