<status value="draft" /> <date value="2026-08-21" /> <publisher value="Dosing GmbH" /> <contact> <name value="Dosing GmbH" /> <telecom> <system value="url" /> <value value="https://www.dosing-gmbh.de" /> </telecom> </contact> <description value="MedicationRequest for a write-back callback to a host clinical system. Binds DosageDgMP for dosageInstruction; subject/requester/insurance do not require literal references." /> <purpose value="Dosage information (structured and/or free text) for a write-back callback, without requiring literal Patient/Practitioner/Coverage references." /> <fhirVersion value="4.0.1" /> <mapping> <identity value="workflow" /> <uri value="http://hl7.org/fhir/workflow" /> <name value="Workflow Pattern" /> </mapping> <kind value="resource" /> <abstract value="false" /> <type value="MedicationRequest" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/MedicationRequest" /> <derivation value="constraint" /> <differential> <element id="MedicationRequest"> <path value="MedicationRequest" /> <short value="Prescription in a write-back callback" /> <definition value="One issued prescription: status, dosage, and a reference to the associated Medication resource within the same payload." /> <constraint> <key value="aid-dosageFlag-true" /> <severity value="error" /> <human value="If the dosage-present indicator is true, a dosage instruction must be present." /> <expression value="extension('https://fhir.kbv.de/StructureDefinition/KBV_EX_ERP_DosageFlag').exists().not() or ((extension('https://fhir.kbv.de/StructureDefinition/KBV_EX_ERP_DosageFlag').value as boolean)=true implies dosageInstruction.exists())" /> </constraint> <constraint> <key value="aid-dosageFlag-false" /> <severity value="error" /> <human value="If the dosage-present indicator is false, no dosage instruction may be present." /> <expression value="extension('https://fhir.kbv.de/StructureDefinition/KBV_EX_ERP_DosageFlag').exists().not() or ((extension('https://fhir.kbv.de/StructureDefinition/KBV_EX_ERP_DosageFlag').value as boolean)=false implies dosageInstruction.exists().not())" /> </constraint> </element> <element id="MedicationRequest.extension"> <path value="MedicationRequest.extension" /> <slicing> <discriminator> <type value="value" /> <path value="url" /> </discriminator> <ordered value="false" /> <rules value="open" /> </slicing> <short value="Extensions" /> </element> <element id="MedicationRequest.extension:dosageFlag"> <path value="MedicationRequest.extension" /> <sliceName value="dosageFlag" /> <short value="Dosage-present indicator" /> <definition value="Whether a dosage instruction is given at all (KBV_EX_ERP_DosageFlag). Governs, together with the aid-dosageFlag-true/aid-dosageFlag-false constraints, whether dosageInstruction may be present." /> <min value="0" /> <max value="1" /> <type> <code value="Extension" /> <profile value="https://fhir.kbv.de/StructureDefinition/KBV_EX_ERP_DosageFlag" /> </type> <mustSupport value="true" /> </element> <element id="MedicationRequest.extension:renderedDosageInstruction"> <path value="MedicationRequest.extension" /> <sliceName value="renderedDosageInstruction" /> <short value="Rendered dosage text (e.g. "1-2-0-1")" /> <definition value="Human-readable text generated from the structured dosage. Required once dosageInstruction is structured (see DosageDgMP: DosageStructuredRequiresGeneratedText)." /> <min value="0" /> <max value="1" /> <type> <code value="Extension" /> <profile value="http://hl7.org/fhir/5.0/StructureDefinition/extension-MedicationRequest.renderedDosageInstruction" /> </type> <mustSupport value="true" /> </element> <element id="MedicationRequest.extension:generatedDosageInstructionsMeta"> <path value="MedicationRequest.extension" /> <sliceName value="generatedDosageInstructionsMeta" /> <short value="Metadata for the generated dosage text" /> <definition value="Language and algorithm version of the generated dosage text. algorithmVersion is the version of the reference implementation, not of our own code." /> <min value="0" /> <max value="1" /> <type> <code value="Extension" /> <profile value="http://ig.fhir.de/igs/medication/StructureDefinition/GeneratedDosageInstructionsMeta" /> </type> <mustSupport value="true" /> </element> <element id="MedicationRequest.extension:multiplePrescription"> <path value="MedicationRequest.extension" /> <sliceName value="multiplePrescription" /> <short value="Multiple-prescription indicator" /> <definition value="Indicator, numbering and period of a multiple prescription (KBV_EX_ERP_Multiple_Prescription)." /> <min value="0" /> <max value="1" /> <type> <code value="Extension" /> <profile value="https://fhir.kbv.de/StructureDefinition/KBV_EX_ERP_Multiple_Prescription" /> </type> <mustSupport value="true" /> </element> <element id="MedicationRequest.extension:legalBasis"> <path value="MedicationRequest.extension" /> <sliceName value="legalBasis" /> <short value="Legal basis (incl. replacement prescription)" /> <definition value="Legal basis of the prescription (KBV_EX_FOR_Legal_basis). Codes relevant here: "00" (standard) and "10" (replacement prescription per § 31 Abs. 3 Satz 7 SGB V)." /> <min value="0" /> <max value="1" /> <type> <code value="Extension" /> <profile value="https://fhir.kbv.de/StructureDefinition/KBV_EX_FOR_Legal_basis" /> </type> <mustSupport value="true" /> </element> <element id="MedicationRequest.extension:statusCoPayment"> <path value="MedicationRequest.extension" /> <sliceName value="statusCoPayment" /> <short value="Co-payment status" /> <definition value="Co-payment status of the prescription (KBV_EX_FOR_StatusCoPayment). Codes: "0" co-payment required, "1" co-payment exempt, "2" assisted reproduction per § 27a SGB V." /> <min value="0" /> <max value="1" /> <type> <code value="Extension" /> <profile value="https://fhir.kbv.de/StructureDefinition/KBV_EX_FOR_StatusCoPayment" /> </type> <mustSupport value="true" /> </element> <element id="MedicationRequest.extension:narcotic"> <path value="MedicationRequest.extension" /> <sliceName value="narcotic" /> <short value="Narcotic (BtM)" /> <definition value="Special marker per § 9 Abs. 1 Nr. 6 BtMVV plus supplementary notes on the substitution medicine (KBV_EX_ERP_Narcotic)." /> <min value="0" /> <max value="1" /> <type> <code value="Extension" /> <profile value="https://fhir.kbv.de/StructureDefinition/KBV_EX_ERP_Narcotic" /> </type> <mustSupport value="true" /> </element> <element id="MedicationRequest.extension:teratogenic"> <path value="MedicationRequest.extension" /> <sliceName value="teratogenic" /> <short value="T-prescription (teratogenic medicine)" /> <definition value="Declarations required for prescribing a teratogenic medicine (KBV_EX_ERP_Teratogenic): off-label status, childbearing potential, compliance with safety measures, provision of information material, and declared expertise." /> <min value="0" /> <max value="1" /> <type> <code value="Extension" /> <profile value="https://fhir.kbv.de/StructureDefinition/KBV_EX_ERP_Teratogenic" /> </type> <mustSupport value="true" /> </element> <element id="MedicationRequest.medicationReference"> <path value="MedicationRequest.medication[x]" /> <sliceName value="medicationReference" /> <short value="Reference to the Medication resource" /> <definition value="urn:uuid reference to the Medication resource of the same prescription, resolvable only within the payload, not as a Bundle." /> <min value="1" /> <max value="1" /> <type> <code value="Reference" /> <targetProfile value="http://hl7.org/fhir/StructureDefinition/Medication" /> </type> <mustSupport value="true" /> </element> <element id="MedicationRequest.subject"> <path value="MedicationRequest.subject" /> <short value="Patient (display-only is sufficient)" /> <mustSupport value="true" /> </element> <element id="MedicationRequest.authoredOn"> <path value="MedicationRequest.authoredOn" /> <short value="Date the prescription was issued" /> <mustSupport value="true" /> </element> <element id="MedicationRequest.requester"> <path value="MedicationRequest.requester" /> <short value="Requesting practitioner (optional)" /> <max value="1" /> <mustSupport value="false" /> </element> <element id="MedicationRequest.insurance"> <path value="MedicationRequest.insurance" /> <short value="Insurance coverage (optional)" /> <mustSupport value="false" /> </element> <element id="MedicationRequest.dosageInstruction"> <path value="MedicationRequest.dosageInstruction" /> <short value="Dosage, structured and/or free text (DosageDgMP)" /> <definition value="Binds DosageDgMP from de.fhir.medication for structured and/or free-text dosage. Whether an entry is present is governed by the dosageFlag extension, not by cardinality." /> <min value="0" /> <type> <code value="Dosage" /> <profile value="http://ig.fhir.de/igs/medication/StructureDefinition/DosageDgMP" /> </type> <mustSupport value="true" /> </element> <element id="MedicationRequest.dispenseRequest"> <path value="MedicationRequest.dispenseRequest" /> <short value="Dispense authorization" /> <mustSupport value="true" /> </element> <element id="MedicationRequest.dispenseRequest.quantity"> <path value="MedicationRequest.dispenseRequest.quantity" /> <short value="Package quantity to dispense" /> <mustSupport value="true" /> </element> <element id="MedicationRequest.dispenseRequest.expectedSupplyDuration"> <path value="MedicationRequest.dispenseRequest.expectedSupplyDuration" /> <short value="Expected supply duration (days for narcotics, weeks for T-prescriptions)" /> <definition value="Expected supply duration of the medicine: in days for narcotics, in weeks for teratogenic medicines." /> <mustSupport value="true" /> </element> <element id="MedicationRequest.substitution"> <path value="MedicationRequest.substitution" /> <short value="Substitution permission (aut idem)" /> <mustSupport value="true" /> </element> <element id="MedicationRequest.substitution.allowed[x]"> <path value="MedicationRequest.substitution.allowed[x]" /> <short value="Substitution permission (aut idem)" /> <type> <code value="boolean" /> </type> <mustSupport value="true" /> </element> </differential> </StructureDefinition>