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