description: The US Core Observation ADI Documentation Profile inherits from the FHIR [Observation](https://hl7.org/fhir/R4/observation.html) resource; refer to it for scope and usage definitions. This profile and the [US Core Observation ADI DocumentationReference Profile](StructureDefinition-us-core-adi-documentreference.html) meet the [U.S. Core Data for Interoperability (USCDI)](https://www.healthit.gov/isp/united-states-core-data-interoperability-uscdi) *Advance Directive Observation* Data Element requirements. It is used to communicate whether a person has advance directive information and, if one or more documents exist, their location. Examples of advance healthcare directive documents include physician order for life sustaining treatment (POLST), do not resuscitate order (DNR), and medical power of attorney. To communicate the type of advance directive document, the author, the verifier, and other properties, see the US Core Observation ADI Documentation Profile. This profile sets minimum expectations for the Observation resource to record, search, and fetch findings about the presence of a patient's advance directives. It specifies which core elements, extensions,  vocabularies, and value sets **SHALL** be present in the resource and constrains how the elements are used. Providing the floor for standards development for specific use cases promotes interoperability and adoption.
package_name: hl7.fhir.us.core
derivation: constraint
name: USCoreObservationADIDocumentationProfile
type: Observation
elements:
  category:
    mustSupport: true
    index: 5
    slicing:
      rules: open
      discriminator:
      - {path: $this, type: value}
      min: null
      slices:
        us-core:
          match:
            coding:
            - {code: observation-adi-documentation, system: 'http://hl7.org/fhir/us/core/CodeSystem/us-core-category'}
          schema:
            mustSupport: true
            pattern:
              type: CodeableConcept
              value:
                coding:
                - {code: observation-adi-documentation, system: 'http://hl7.org/fhir/us/core/CodeSystem/us-core-category'}
            index: 6
          min: 0
          max: 1
  value:
    mustSupport: true
    choices: [valueCodeableConcept]
    index: 12
  extension:
    type: Extension
    short: Relevant ADI documents and information
    mustSupport: true
    url: http://hl7.org/fhir/StructureDefinition/workflow-supportingInfo
    index: 0
    slicing:
      slices:
        supporting-info:
          match: {}
          schema:
            type: Extension
            short: Relevant ADI documents and information
            mustSupport: true
            url: http://hl7.org/fhir/StructureDefinition/workflow-supportingInfo
            index: 0
            elements:
              value:
                short: Reference to patient or provider authored ADI documents
                mustSupport: true
                choices: [valueReference]
                index: 2
              valueReference:
                type: Reference
                short: Reference to patient or provider authored ADI documents
                mustSupport: true
                choiceOf: value
                refers: ['http://hl7.org/fhir/StructureDefinition/Resource', 'http://hl7.org/fhir/us/core/StructureDefinition/us-core-adi-documentreference']
                index: 3
  status: {mustSupport: true, index: 4}
  code:
    type: CodeableConcept
    short: Observation ADI Documentation code
    mustSupport: true
    pattern:
      type: CodeableConcept
      value:
        coding:
        - {code: 45473-6, system: 'http://loinc.org'}
    index: 7
  valueCodeableConcept: {type: CodeableConcept, mustSupport: true, choiceOf: value, index: 13}
  issued: {short: Date/Time this observation was made available, mustSupport: true, index: 9}
  subject:
    type: Reference
    mustSupport: true
    refers: ['http://hl7.org/fhir/us/core/StructureDefinition/us-core-patient']
    index: 8
  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: 10
package_version: 8.0.0-ballot
extensions:
  supporting-info:
    url: http://hl7.org/fhir/StructureDefinition/workflow-supportingInfo
    type: Extension
    short: Relevant ADI documents and information
    mustSupport: true
    index: 0
    elements:
      value:
        short: Reference to patient or provider authored ADI documents
        mustSupport: true
        choices: [valueReference]
        index: 2
      valueReference:
        type: Reference
        short: Reference to patient or provider authored ADI documents
        mustSupport: true
        choiceOf: value
        refers: ['http://hl7.org/fhir/StructureDefinition/Resource', 'http://hl7.org/fhir/us/core/StructureDefinition/us-core-adi-documentreference']
        index: 3
class: profile
kind: resource
url: http://hl7.org/fhir/us/core/StructureDefinition/us-core-observation-adi-documentation
base: http://hl7.org/fhir/StructureDefinition/Observation
version: 8.0.0-ballot
required: [subject]