description: This profile defines a set of constraints to the FHIR MedicationRequest resource for use in Ontario Patient Summaries (PS-ON).  It refines constraints applied to the MedicationRequest resource by the PS-CA project to represent a record of a medication request in the patient summary. It is informed by the constraints of the most recent direction of the IPS-UV (September Connectathon Build) and the [Canadian Baseline Profile](http://build.fhir.org/ig/HL7-Canada/ca-baseline/branches/master/StructureDefinition-profile-medicationstatement.html) to allow for cross-border and cross-jurisdiction sharing of Medication Summary information.
package_name: ca.on.patient
derivation: constraint
name: MedicationRequestPSON
type: MedicationRequest
elements:
  meta:
    mustSupport: true
    index: 1
    elements:
      profile: {mustSupport: true, index: 2}
    required: [profile]
  dispenseRequest:
    elements:
      validityPeriod:
        constraint:
          ps-ca-medreq-1: {human: Either MedicationRequest.dispenseRequest.validityPeriod SHALL be present or a Data Absent Reason Extension SHALL be present., severity: error, expression: '(validityPeriod.exists() xor extension.where(url=''http://hl7.org/fhir/StructureDefinition/data-absent-reason'').exists()'}
        mustSupport: true
        index: 20
        extensions: {}
        elements:
          extension: {type: Extension, short: validityPeriod absence reason, mustSupport: true, url: 'http://hl7.org/fhir/StructureDefinition/data-absent-reason', index: 21}
    required: [validityPeriod]
  authoredOn: {mustSupport: true, index: 13}
  requester:
    type: Reference
    refers: ['http://ontariohealth.ca/fhir/StructureDefinition/ca-on-ps-profile-practitionerrole']
    index: 14
  status: {mustSupport: true, index: 3}
  id: {index: 0}
  dosageInstruction:
    mustSupport: true
    index: 15
    elements:
      text: {mustSupport: true, index: 16}
      timing: {mustSupport: true, index: 17}
      route:
        type: CodeableConcept
        binding: {strength: preferred, valueSet: 'http://hl7.org/fhir/uv/ips/ValueSet/medicine-route-of-administration'}
        mustSupport: true
        index: 18
        slicing:
          rules: open
          description: Discriminated by value set
          discriminator:
          - {path: $this, type: pattern}
          min: 0
          max: 1
          slices:
            routeSCTCA:
              match: {}
              schema:
                short: Optional slice for representing SNOMED CT Canadian edition routes of administration
                binding: {strength: required, valueSet: 'https://fhir.infoway-inforoute.ca/ValueSet/SNOMEDCT-CA-RouteOfAdmin'}
                index: 19
              max: 1
  medicationReference:
    refers: ['http://ontariohealth.ca/fhir/StructureDefinition/ca-on-ps-profile-medication']
    type: Reference
    mustSupport: true
    choiceOf: medication
    index: 8
    slicing:
      slices:
        medicationReference:
          match: {}
          schema:
            refers: ['http://ontariohealth.ca/fhir/StructureDefinition/ca-on-ps-profile-medication']
            type: Reference
            mustSupport: true
            choiceOf: medication
            index: 8
          min: 0
          max: 1
  subject:
    type: Reference
    mustSupport: true
    refers: ['http://ontariohealth.ca/fhir/StructureDefinition/ca-on-ps-profile-patient']
    index: 11
    elements:
      reference: {mustSupport: true, index: 12}
    required: [reference]
  medication:
    short: Code for the medication being administered
    mustSupport: true
    choices: []
    index: 10
    slicing:
      slices:
        medicationCodeableConcept:
          match: {}
          schema:
            short: Code for the medication being administered
            mustSupport: true
            choices: []
            index: 10
          min: 0
          max: 1
package_version: summary-0.0.1-alpha
class: profile
kind: resource
url: http://ontariohealth.ca/fhir/StructureDefinition/ca-on-ps-profile-medicationrequest
base: http://hl7.org/fhir/StructureDefinition/MedicationRequest
version: 0.0.1
required: [meta]