{
  "resourceType" : "MedicationAdministration",
  // from Resource: id, meta, implicitRules, and language
  // from DomainResource: text, contained, extension, and modifierExtension
  "identifier" : [{ Identifier }], // External identifier
  "status" : "<code>", // R!  in-progress | on-hold | completed | entered-in-error | stopped
  "patient" : { Reference(Patient) }, // R!  Who received medication
  "practitioner" : { Reference(Practitioner|Patient|RelatedPerson) }, // Who administered substance
  "encounter" : { Reference(Encounter) }, // Encounter administered as part of
  "prescription" : { Reference(MedicationOrder) }, // Order administration performed against
  "wasNotGiven" : <boolean>, // True if medication not administered
  "reasonNotGiven" : [{ CodeableConcept }], // C? Reason administration not performed
  "reasonGiven" : [{ CodeableConcept }], // C? Reason administration performed
  // effectiveTime[x]: Start and end time of administration. One of these 2:
  "effectiveTimeDateTime" : "<dateTime>",
  "effectiveTimePeriod" : { Period },
  // medication[x]: What was administered. One of these 2:
  "medicationCodeableConcept" : { CodeableConcept },
  "medicationReference" : { Reference(Medication) },
  "device" : [{ Reference(Device) }], // Device used to administer
  "note" : "<string>", // Information about the administration
  "dosage" : { // Details of how medication was taken
    "text" : "<string>", // Dosage Instructions
    // site[x]: Body site administered to. One of these 2:
    "siteCodeableConcept" : { CodeableConcept },
    "siteReference" : { Reference(BodySite) },
    "route" : { CodeableConcept }, // Path of substance into body
    "method" : { CodeableConcept }, // How drug was administered
    "quantity" : { Quantity(SimpleQuantity) }, // Amount administered in one dose
    // rate[x]: Dose quantity per unit of time. One of these 2:
    "rateRatio" : { Ratio }
    "rateRange" : { Range }
  }
}