Medication Prescribed Dosage Instruction
Dosage information (structured and free text instructions) about prescribed medication.
Attributes
| Attribute | Type | Multiplicity | Attribute note |
|---|---|---|---|
| Medication Dosage Instruction Step Number | Integer | 0..1 | The sequential step number indicating the order in which the dosage instructions should be followed, if the prescription includes more than one step (e.g., 1, 2). |
| Medication Prescribed Dose per Administration | Quantity | 0..1 | The prescribed quantity of medication to be taken for each (self-)administration (e.g., 100), along with its unit of measure (e.g., capsule(s), drop(s), 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 Prescribed Dose per Administration Limits Range | Range | 0..1 | The minimum and/or maximum prescribed quantity of medication (whichever is known) to be taken for each (self-)administration, along with the corresponding units of measure (e.g., lower limit: 75 mg, upper limit: 150 mg).
Lower Limit.Unit of Measure Code, Higher Limit.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 Prescribed Dosage Rate Time Length | Quantity | 0..1 | The value and time unit of measure representing the length of time the dose is to be (self-) administered.
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/x_timeunitsofmeasure |
| Medication Prescribed Dosage Rate Time Limits Range | Range | 0..1 | The minimum and/or maximum length of time (whichever is known) that the dose is to be (self-)administered, along with corresponding the time unit(s) of measure.
Lower Limit.Unit of Measure Code, Higher Limit.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/x_timeunitsofmeasure
|
| Medication Prescribed Dose Total | Quantity | 0..1 | The total prescribed quantity of medication (e.g., 100) throughout the prescribed duration of medication consumption, along with its unit of measure (e.g., capsule(s), drop(s), 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 Prescribed Dose Type Code | Codeable Concept | 0..1 | Uniquely specifies the kind of dose or rate specified in a medication request (e.g., ordered, calculated).
Value Set:
https://fhir.infoway-inforoute.ca/ValueSet/doseandratetype |
| Medication Prescribed Consumption Duration | Quantity | 0..1 | The value of the duration for which the medication should be taken (e.g., 10), along with its unit of measure (e.g., days).
Unit of Measure Code
Value Set:
https://fhir.infoway-inforoute.ca/ValueSet/x_timeunitsofmeasure |
| Medication Dose Prescribed As Needed Indicator | Indicator | 0..1 | An indicator of whether the medication should be taken on an as-needed basis. |
| Medication Dose Prescribed As Needed Reason Code | Codeable Concept | 0..1 | Uniquely specifies the symptom or condition that, when present, warrants the request to take or administer the dose as needed (e.g., fever, pain, dyspnea).
Value Set:
https://fhir.infoway-inforoute.ca/ValueSet/clinicalfindingcode |
| Medication Prescribed Route of Administration Code | Codeable Concept | 0..1 | Uniquely specifies the path by which the medication should be taken into or contact the body (e.g., oral, intramuscular).
Value Set:
https://fhir.infoway-inforoute.ca/ValueSet/routeofadministration |
| Medication Prescribed Timing Code | Codeable Concept | 0..1 | Uniquely specifies the prescribed frequency/timing of medication (e.g., BID, TID, QD).
Value Set: To be developed. |
| Medication Prescribed Timing Frequency | Quantity | 0..1 | The prescribed frequency of the medication's (self-) administration (e.g., 3 times per day) - value per time period (e.g., 3) and unit of measure for period duration (e.g., day).
Value: Integer (i.e., decimal part = 0)
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/x_timeunitsofmeasure |
| Medication Prescribed Time of Day | Time | 0..* | The time(s) of day when the medication should be taken or administered (e.g., 1300 hrs). |
| Medication Prescribed Timing Day of Week Code | Codeable Concept | 0..* | Uniquely specifies the day(s) of the week when the medication should be taken or administered (e.g., Tuesday).
Value Set:
https://fhir.infoway-inforoute.ca/ValueSet/daysofweek |
| Medication Prescribed Dosage Number of Repeats | Integer | 0..1 | The number of times to repeat the dosage. |
| Medication Prescribed Number of Refills | Integer | 0..1 | The number of refills/repeats associated with the prescription. |
| Medication Prescribed Usage Information Code | Codeable Concept | 0..* | Uniquely specifies the instruction(s)provided to the patient on how to take the medication (e.g., with meals), or warnings regarding the medication (e.g., may cause drowsiness).
Value Set:
https://fhir.infoway-inforoute.ca/ValueSet/medicationadditionaldosageinstructioncode |
| Medication Prescription Patient-Oriented Information | String | 0..1 | Plain-language information about the medication for the consumer (e.g., potential side effects). |
| Medication Complex Prescription Information | String | 0..1 | A free text description of complex dosing instructions that cannot be fully captured by discrete data elements. |
| Medication Prescribed Consumption Period | Period | 0..1 | The date and, if available, the time, when medication consumption should be started and, if applicable, stopped. |
Relationships
| From class | From multiplicity | Relationship | To class | To multiplicity |
|---|---|---|---|---|
| Medication Request | 1 | has (composition) | Medication Prescribed Dosage Instruction | 0..* |
Contact us
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How to cite:
Canadian Institute for Health Information. Medication Prescribed Dosage Instruction. Accessed November 02, 2026.