description: This Observation profile represents potential patient exposure and contact information.\n\nThe type of exposure/contact is contained in Observation.code (environmental, activity, event, location, person, animal, etc.). If the exposure/contact is an entity (person, animal, location) then it is represented in Observation.focus which is a reference to a Patient, RelatedPerson, Location, Group, etc.. (An animal would be represented by a RelatedPerson that contains the Extension Practitioner Animal Species. Free text information about the exposure/contact can be recorded in Observation.valueString and the date or period of exposure is held in Observation.effective[x]. If an address where the exposure/contact took place is known then it can be contained in the address-extension.\n\nThe following are some exposures that might be captured in this profile:\n\n* Environmental exposures\n    * Living facilities\n    * Work facilities\n    * School facilities\n* Contact exposures\n    * Person\n    * Animal\n* Event Exposures\n    * Sporting event\n    * Rally\n    * Wedding\n    * Activity
package_name: rs/hl7.fhir.us.ph
derivation: constraint
name: USPublicHealthExposureContactInformation
type: Observation
elements:
  category:
    short: Exposure
    mustSupport: true
    pattern:
      type: CodeableConcept
      value:
        coding:
        - {code: EXPOS, system: 'http://terminology.hl7.org/CodeSystem/v3-ActClass'}
    type: CodeableConcept
    index: 1
  value:
    mustSupport: true
    choices: [valueCodeableConcept, valueString]
    index: 8
  valueString: {type: string, mustSupport: true, choiceOf: value, index: 10}
  extension: {type: Extension, short: Exposure/contact address, mustSupport: true, url: 'http://hl7.org/fhir/us/ph-library/StructureDefinition/us-ph-address-extension', index: 0}
  effective:
    mustSupport: true
    choices: []
    index: 6
  code: {short: 'The type of exposure/contact (environmental, activity, event, location, person, animal, etc.). Suggested value sets:[Exposure Setting (COVID-19)](https://phinvads.cdc.gov/vads/ViewValueSet.action?id=FA5D6D86-C7B2-EA11-818F-005056ABE2F0), [Exposure Location](https://phinvads.cdc.gov/vads/ViewValueSet.action?id=9BE75E17-176B-DE11-9B52-0015173D1785), [Social History Type](https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.88.12.80.60/expansion)', mustSupport: true, index: 2}
  valueCodeableConcept: {type: CodeableConcept, mustSupport: true, choiceOf: value, index: 9}
  focus:
    type: Reference
    short: Contact with an entity (person, animal) or at a location.
    mustSupport: true
    refers: ['http://hl7.org/fhir/StructureDefinition/Group', 'http://hl7.org/fhir/StructureDefinition/RelatedPerson', 'http://hl7.org/fhir/us/ph-library/StructureDefinition/us-ph-location', 'http://hl7.org/fhir/us/ph-library/StructureDefinition/us-ph-patient']
    index: 4
  subject:
    type: Reference
    mustSupport: true
    refers: ['http://hl7.org/fhir/us/ph-library/StructureDefinition/us-ph-patient']
    index: 3
package_version: library-1.0.0-ballot
extensions: {}
class: profile
kind: resource
url: http://hl7.org/fhir/us/ph-library/StructureDefinition/us-ph-exposure-contact-information
base: http://hl7.org/fhir/StructureDefinition/Observation
version: 1.0.0-ballot
required: [category, code, subject]