Mappings for the medicationstatement resource.
 | MedicationStatement | SubstanceAdministration | 
 | identifier | SubstanceAdministration.id | 
 | patient | SubstanceAdministration->subject->Patient | 
 | informationSource |  | 
 | dateAsserted |  | 
 | status |  | 
 | wasNotGiven | SubstanceAdministration.actionNegationInd | 
 | reasonNotGiven | SubstanceAdministration->Reason->Observation->Value | 
 | reasonForUse[x] |  | 
 | effective[x] | SubstanceAdministration.effectiveTime | 
 | note |  | 
 | medication | SubstanceAdministration>Component>SubstanceAdministrationRequest.consumable | 
 | dosage | SubstanceAdministration>Component>SubstanceAdministrationRequest | 
 | text |  | 
 | schedule | .effectiveTime | 
 | asNeeded[x] | boolean: .outboundRelationship[typeCode=PRCN].negationInd (inversed - so negationInd = true means asNeeded=false
CodeableConcept: .outboundRelationship[typCode=PRCN].target[classCode=OBS, moodCode=EVN, isCriterionInd=true, code="Assertion"].value | 
 | site | .approachSiteCode | 
 | route | .routeCode | 
 | method | .methodCode | 
 | quantity | .doseQuantity | 
 | rate | .rateQuantity | 
 | maxDosePerPeriod | .maxDoseQuantity | 
 | MedicationStatement |  | 
 | identifier | RXA-25-Administered Barcode Identifier? | 
 | patient | PID-3-Patient ID List | 
 | informationSource |  | 
 | dateAsserted |  | 
 | status |  | 
 | wasNotGiven | RXA-20-Completion Status='NA' | 
 | reasonNotGiven | RXA-9-Administration Notes:RXA-20-Completion Status='NA' | 
 | reasonForUse[x] |  | 
 | effective[x] | RXA-3-Date/Time Start of Administration / RXA-4-Date/Time End of Administration | 
 | note |  | 
 | medication | RXA-5-Administered Code | 
 | dosage |  | 
 | text |  | 
 | schedule | RAS:TQ1 | 
 | asNeeded[x] |  | 
 | site | RXR-2-Administration Site | 
 | route | RXR-1-Route | 
 | method | RXR-4-Administration Method | 
 | quantity | RXA-6-Administered Amount / RXA-7.1-Administered Units.code / RXA-7.3-Administered Units.name of coding system | 
 | rate | RXA-12-Administered Per (Time Unit) | 
 | maxDosePerPeriod | RXE-4-Give Amount - Maximum / RXE-5-Give Units |