http://hl7.org/fhir/StructureDefinition/elementdefinition-equivalence|5.2.0

The level of equivalence between the element containing the mapping and the element mapped to.
NameFlagsCardTypeDescription & Constraints
Extension
0..1equivalent | equal | wider | subsumes | narrower | specializes | inexact | unmatched | disjoint
 
extension
?..0
 
url
?..?
 
value[x] *
1..? ConceptMapEquivalence (required)
 
 
valueCode *
1..?code ConceptMapEquivalence (required)