- How medication should be taken Indicates how the medication is to be used by the patient.
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Key: = Must support, = QICore-defined extension, = Is-Modifier
Field Card. Type and Description 
additionalInstructions 0..*List<Concept>Additional instructions such as "Swallow with plenty of water" which may or may not be coded.Binding: SNOMED CT Additional Dosage Instructions (Example)
asNeeded[x] 0..1Boolean | ConceptIndicates whether the Medication is only taken when needed within a specific dosing schedule (Boolean option), or it indicates the precondition for taking the Medication (CodeableConcept).Binding: SNOMED CT Medication As Needed Reason Codes (Example)
doseType 0..1ConceptThe type of dose, e.g., initial, maintenance, loading.Binding: value set (Preferred)
dose[x] 0..1interval<Quantity> | QuantityThe amount of therapeutic or other substance given at one administration event.id 0..1Stringunique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.infuseOver 0..1DurationFor infused medications, the length of time the infusion process, as a duration. Note the difference between infuseOver and duration of treatment (specified in administrationFrequency). An order may call for infusing a patient TID for an hour each time over a duration of 5 days.maxDeliveryRate 0..1RatioThe maximum rate of substance administration. For volume medications, the maximum rate is to be expressed as a volume per time period. This value may be used as a stopping condition when a deliveryRateIncrement is specified without a count.maxDeliveryVolume 0..1QuantityThe maximum volume of fluid to administer to a patient.maxDosePerAdministration 0..1QuantityThe maximum total quantity of a therapeutic substance that may be administered to a subject per administration.maxDosePerLifetime 0..1QuantityThe maximum total quantity of a therapeutic substance that may be administered per lifetime of the subject.maxDosePerPeriod 0..1RatioThe maximum total quantity of a therapeutic substance that may be administered to a subject over the period of time. For example, 1000mg in 24 hours.method 0..1ConceptA coded value indicating the method by which the medication is introduced into or onto the body. Most commonly used for injections. For examples, Slow Push; Deep IV.Binding: SNOMED CT Administration Method Codes (Example)
minDosePerPeriod 0..1RatioThe minimum total quantity of a therapeutic substance that may be administered to a subject over the period of time. E.g., 10 mg in 24 hours.rateGoal 0..1RatioThe target rate to reach for this infusion. Note that deliveryRateGoal is typically less than the maximum delivery rate which is the rate not to exceed. For enteral feeding orders, a target tube feeding rate of 75ml/hour may be specified.rateIncrement 0..1RatioChange in the dosing rate applied each rateIncrementInterval, e.g., 20 mL/hour. The rate increment is usually an increase for a patient who is initiating tube feeding. The increase is continued until the maxDeliveryRate or rateGoal is reached.rateIncrementInterval 0..1DurationPeriod of time after which the rate increment should be attempted, e.g., 4 hours.rate[x] 0..1Ratio | interval<Quantity> | QuantityIdentifies the speed with which the medication was or will be introduced into the patient. Typically the rate for an infusion e.g. 100 ml per 1 hour or 100 ml/hr. May also be expressed as a rate per unit of time e.g. 500 ml per 2 hours. Other examples: 200 mcg/min or 200 mcg/1 minute; 1 liter/8 hours. Sometimes, a rate can imply duration when expressed as total volume / duration (e.g. 500mL/2 hours implies a duration of 2 hours). However, when rate doesn't imply duration (e.g. 250mL/hour), then the timing.repeat.duration is needed to convey the infuse over time period.route 0..1ConceptA code specifying the route or physiological path of administration of a therapeutic agent into or onto a patient's body.Binding: SNOMED CT Route Codes (Example)
site[x] 0..1Concept | BodySiteA coded specification of the anatomic site where the medication first enters the body.Binding: value set (Preferred)
text 0..1StringFree text dosage instructions can be used for cases where the instructions are too complex to code. The content of this attribute does not include the name or description of the medication. When coded instructions are present, the free text instructions may still be present for display to humans taking or administering the medication. It is expected that the text instructions will always be populated. If the dosage.timing attribute is also populated, then the dosage.text should reflect the same information as the timing.timing 0..1TimingThe timing schedule for giving the medication to the patient. The Schedule data type allows many different expressions. For example: "Every 8 hours"; "Three times a day"; "1/2 an hour before breakfast for 10 days from 23-Dec 2011:"; "15 Oct 2013, 17 Oct 2013 and 1 Nov 2013". Sometimes, a rate can imply duration when expressed as total volume / duration (e.g. 500mL/2 hours implies a duration of 2 hours). However, when rate doesn't imply duration (e.g. 250mL/hour), then the timing.repeat.duration is needed to convey the infuse over time period.Key: = Must support, = QICore-defined extension, = Is-Modifier
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