Intersection of http://hl7.org/fhir/ValueSet/observation-codes and http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113762.1.4.1115.9
This is the ValueSet that contains codes in both LOINC Codes (http://hl7.org/fhir/ValueSet/observation-codes) and Treatment Intervention Preferences Grouping (http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113762.1.4.1115.9).