Intersection of http://hl7.org/fhir/us/core/ValueSet/us-core-survey-codes and http://hl7.org/fhir/ValueSet/observation-codes
This is the ValueSet that contains codes in both US Core Survey Codes (http://hl7.org/fhir/us/core/ValueSet/us-core-survey-codes) and LOINC Codes (http://hl7.org/fhir/ValueSet/observation-codes).