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