Intersection of http://hl7.org/fhir/us/core/ValueSet/simple-language and http://terminology.hl7.org/ValueSet/Languages
This is the ValueSet that contains codes in both Language codes with language and optionally a region modifier (http://hl7.org/fhir/us/core/ValueSet/simple-language) and Languages (http://terminology.hl7.org/ValueSet/Languages).