Medication Request
An order for medication by a clinician.
An order might typically include the medication name, dose, route of administration, frequency, duration and number of refills.
Appears in
Constraints
n/a
Stereotype(s)
n/a
Attributes
| Attribute | Type | Multiplicity | Attribute note |
|---|---|---|---|
| Medication Request Reason Code | Codeable Concept | 0..* | Uniquely specifies the sign(s), symptom(s) or health condition(s) that the medication was prescribed to manage, improve, treat or prevent.
Value Set:
https://fhir.infoway-inforoute.ca/ValueSet/medicationreasoncode |
| Medication Request Status Code | Codeable Concept | 1 | Uniquely specifies the current state of the medication request (e.g., active, cancelled).
Value Set:
https://fhir.infoway-inforoute.ca/ValueSet/medicationrequeststatuscodes |
| Medication Request Status Reason Code | Codeable Concept | 0..1 | Uniquely specifies the reason for the current status of the medication request (e.g., try another treatment first, drug level too high, allergy).
Value Set: To be developed. |
| Medication Prescribed No Substitution Indicator | Indicator | 0..1 | An indicator of whether (if true) no substitutions can be made for the prescribed medication. |
| Medication Prescribed No Substitution Reason Code | Codeable Concept | 0..1 | Uniquely specifies the reason why a substitution must not be made.
Value Set: To be developed. |
| Medication Prescribed Dosage Lifetime Limit | Quantity | 0..1 | The maximum dose of medication the person can receive in their lifetime - value and unit of measure (e.g., 500 mg).
Unit of Measure Code
Value Set: https://ui.terminologystandardsservice.ca/ui/deeplink?iss=https://terminologystandardsservice.ca/fhir&type=ValueSet&canonicalUrl=https://fhir.infoway-inforoute.ca/ValueSet/prescriptiondosequantityunit |
| Medication Request Intent Code | Codeable Concept | 0..1 | Uniquely specifies whether the request is a proposal, plan, or an original order.
Value Set:
https://fhir.infoway-inforoute.ca/ValueSet/medicationrequestintent |
| Medication Request Priority Code | Codeable Concept | 0..1 | Uniquely specifies how quickly the medication request should be addressed with respect to other requests (e.g., urgent, routine).
Value Set: To be developed. |
| Medication Request Origin Code | Codeable Concept | 0..1 | Uniquely specifies where a medication requests originates (e.g., discharge, inpatient, community).
Value Set: To be developed. |
| Medication Request Course of Therapy Type Code | Codeable Concept | 0..1 | Uniquely specifies the prescribed overall pattern of administration or consumption of the medication (e.g., continuous, acute, seasonal).
If the course of therapy type is seasonal, additional information may be provided in medication prescribed dosage instructions information.
Value Set: To be developed. |
| Medication Dosage Instructions Intended Recipient Type Code | Codeable Concept | 0..1 | Uniquely specifies the intended recipient of the medication dosage instructions (e.g., pharmacist, patient).
Value Set: To be developed. |
| Medication Request Validity Period | Period | 0..1 | The period - start and end date - when the medication request is (or was or will be) valid.
Data type is Date. |
Relationships
| From class | From multiplicity | Relationship | To class | To multiplicity |
|---|---|---|---|---|
| Medication Request | 0..* | has prescriber | Health Care Provider | 1 |
| Medication Administration | 0..* | based on | Medication Request | 1 |
| Medication Request | 0..* | for {Not Vaccine} |
Drug | 1 |
| Medication Request | 1 | has (composition) | Medication Prescribed Dosage Instruction | 0..* |
| Medication Request | 0..1 | has (composition) | Clinical Annotation | 0..* |
| Medication Request | 0..* | for | Drug | 1 |
| Medication Statement | 0..* | based on | Medication Request | 0..* |
| Medication Request | 0..* | has | Clinical Information Life Cycle Event | 0..* |
| Medication Request | is a | Health Care Service Event | ||
| Clinical Document | 0..* | supports | Medication Request | 0..* |
Contact us
If you have questions about this initiative, would like to be added to our stakeholder notification list or would like to participate in our consultations, please email us.
How to cite:
Canadian Institute for Health Information. Medication Request. Accessed November 02, 2026.
