Name	Flags	Card.	Type	Description & Constraints
Dosage	Σ TU		BackBoneElement	How the medication is/was taken or should be taken Elements defined in Ancestors: id, extension, modifierExtension
sequence	Σ	0..1	integer	The order of the dosage instructions
text	Σ	0..1	string	Free text dosage instructions e.g. SIG
additionalInstruction	Σ	0..*	CodeableConcept	Supplemental instruction or warnings to the patient - e.g. "with meals", "may cause drowsiness" SNOMED CT Additional Dosage Instructions ( Example)
patientInstruction	Σ	0..1	string	Patient or consumer oriented instructions
timing	Σ	0..1	Timing	When medication should be administered
asNeeded[x]	Σ	0..1		Take "as needed" (for x) SNOMED CT Medication As Needed Reason Codes ( Example)
asNeededBoolean			boolean
asNeededCodeableConcept			CodeableConcept
site	Σ	0..1	CodeableConcept	Body site to administer to SNOMED CT Anatomical Structure for Administration Site Codes ( Example)
route	Σ	0..1	CodeableConcept	How drug should enter body SNOMED CT Route Codes ( Example)
method	Σ	0..1	CodeableConcept	Technique for administering medication SNOMED CT Administration Method Codes ( Example)
doseAndRate	Σ	0..*	Element	Amount of medication administered
type	Σ	0..1	CodeableConcept	The kind of dose or rate specified DoseAndRateType ( Example)
dose[x]	Σ	0..1		Amount of medication per dose
doseRange			Range
doseQuantity			SimpleQuantity
rate[x]	Σ	0..1		Amount of medication per unit of time
rateRatio			Ratio
rateRange			Range
rateQuantity			SimpleQuantity
maxDosePerPeriod	Σ	0..1	Ratio	Upper limit on medication per unit of time
maxDosePerAdministration	Σ	0..1	SimpleQuantity	Upper limit on medication per administration
maxDosePerLifetime	Σ	0..1	SimpleQuantity	Upper limit on medication per lifetime of the patient
Documentation for this format