http://hl7.org/fhir/StructureDefinition/11179-permitted-value-conceptmap|5.2.0

Expresses the linkage between the internal codes used for storage and the codes used for exchange.
NameFlagsCardTypeDescription & Constraints
Extension
0..1Mapping from permitted to transmitted
 
extension
?..0
 
url
?..?
 
value[x] *
1..?
 
 
valueCanonical *
1..?canonical