A record of medication being taken by a patient, or that the medication has been given to a patient where the record is the result of a report from the patient or another clinician.

External identifier - FHIR will generate its own internal IDs (probably URLs) which do not need to be explicitly managed by the resource. The identifier here is one that would be used by another non-FHIR system - for example an automated medication pump would provide a record each time it operated; an administration while the patient was off the ward might be made with a different system and entered after the event. Particularly important if these records have to be updated.

The person or animal who is /was taking the medication.

The person who provided the information about the taking of this medication.

The date when the medication statement was asserted by the information source.

A code specifying the state of the statement. Generally this will be in-progress or completed state.

Set this to true if the record is saying that the medication was NOT taken.

A code indicating why the medication was not taken.

A reason for why the medication is being/was taken.

The interval of time during which it is being asserted that the patient was taking the medication (or was not taking, when the 'wasNotGiven' attribute is true).

If the medication is still being taken at the time the statement is recorded, the "end" date will be omitted.

Provides extra information about the medication statement that is not conveyed by the other attributes.

Identifies the medication being administered. This is either a link to a resource representing the details of the medication or a simple attribute carrying a code that identifies the medication from a known list of medications.

Note: do not use Medication.name to describe the medication this statement concerns. When the only available information is a text description of the medication, Medication.code.text should be used.

Indicates how the medication is/was used by the patient.

Free text dosage instructions can be used for cases where the instructions are too complex to code. When coded instructions are present, the free text instructions may still be present for display to humans taking or administering the medication.

The 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".

If set to true or if specified as a CodeableConcept, indicates that the medication is only taken when needed within the specified schedule rather than at every scheduled dose. If a CodeableConcept is present, it indicates the pre-condition for taking the Medication.

A coded specification of the anatomic site where the medication first enters the body.

A code specifying the route or physiological path of administration of a therapeutic agent into or onto a subject.

A coded value indicating the method by which the medication is introduced into or onto the body. Most commonly used for injections. Examples: Slow Push; Deep IV.

Terminologies used often pre-coordinate this term with the route and or form of administration.

The amount of therapeutic or other substance given at one administration event.

Identifies the speed with which the substance is introduced into the subject. Typically the rate for an infusion. 200ml in 2 hours.

The maximum total quantity of a therapeutic substance that may be administered to a subject over the period of time. E.g. 1000mg in 24 hours.