description: Profile for medication use statements in the Irish healthcare system, aligned with the Xt-EHR EHDSMedicationUse logical model v1.0.0. Used in the mandatory medication summary sections of the Patient Summary and Hospital Discharge Report. In FHIR R4, MedicationStatement is the direct mapping for EHDSMedicationUse; in FHIR R5, the equivalent resource is MedicationUsage.
package_name: nostalgic-ie.fhir.core
derivation: constraint
name: IECoreMedicationStatement
type: MedicationStatement
elements:
  dosage:
    mustSupport: true
    index: 16
    elements:
      text: {short: Human-readable dosage instructions, mustSupport: true, index: 17}
      additionalInstruction: {mustSupport: true, index: 18}
      timing:
        mustSupport: true
        index: 19
        elements:
          repeat:
            elements:
              frequency: {mustSupport: true, index: 20}
              period: {mustSupport: true, index: 21}
      site: {mustSupport: true, index: 22}
      route: {mustSupport: true, index: 23}
      doseAndRate:
        mustSupport: true
        index: 24
        elements:
          dose:
            mustSupport: true
            choices: []
            index: 26
    required: [text]
  derivedFrom: {short: 'Prescription, dispense, or administration that is the basis for this statement (EHDSMedicationUse.derivedFrom)', mustSupport: true, index: 12}
  reasonCode: {short: 'Reason for taking the medication — diagnosis or procedure (ICD-10, SNOMED CT)', mustSupport: true, index: 13}
  medicationCodeableConcept:
    type: CodeableConcept
    choiceOf: medication
    index: 7
    slicing:
      slices:
        medicationCodeableConcept:
          match: {}
          schema: {type: CodeableConcept, choiceOf: medication, index: 7}
          min: 0
          max: 1
  statusReason: {mustSupport: true, index: 2}
  note: {short: Additional information about the medication use statement, mustSupport: true, index: 15}
  status: {short: Status of the medication use statement (active | completed | entered-in-error | intended | stopped | on-hold | unknown | not-taken), mustSupport: true, index: 1}
  effective:
    short: Period when the patient took or is taking the medication (EHDSMedicationUse.periodOfUse)
    mustSupport: true
    choices: []
    index: 10
  identifier: {mustSupport: true, index: 0}
  informationSource:
    type: Reference
    short: Author of the medication statement
    mustSupport: true
    refers: ['https://hl7-ie.github.io/ie-core/fhir/ie/core/StructureDefinition/ie-core-organization', 'https://hl7-ie.github.io/ie-core/fhir/ie/core/StructureDefinition/ie-core-patient', 'https://hl7-ie.github.io/ie-core/fhir/ie/core/StructureDefinition/ie-core-practitioner', 'https://hl7-ie.github.io/ie-core/fhir/ie/core/StructureDefinition/ie-core-practitionerrole', 'https://hl7-ie.github.io/ie-core/fhir/ie/core/StructureDefinition/ie-core-relatedperson']
    index: 11
  subject:
    type: Reference
    mustSupport: true
    refers: ['https://hl7-ie.github.io/ie-core/fhir/ie/core/StructureDefinition/ie-core-patient']
    index: 8
  medication:
    short: Medication (NMPC preferred; SNOMED CT Irish Edition and ATC as secondary codes)
    mustSupport: true
    choices: []
    index: 4
    slicing:
      rules: open
      ordered: false
      discriminator:
      - {path: $this, type: type}
      min: null
      slices:
        medicationCodeableConcept:
          match: {}
          schema:
            choices: [medicationCodeableConcept]
            index: 6
          min: 0
          max: 1
  reasonReference: {mustSupport: true, index: 14}
package_version: 0.2.0
class: profile
kind: resource
url: https://hl7-ie.github.io/ie-core/fhir/ie/core/StructureDefinition/ie-core-medicationstatement
base: http://hl7.org/fhir/StructureDefinition/MedicationStatement
version: 0.2.0
required: [dosage]