Intersection of http://terminology.hl7.org/CodeSystem/usEPAsrs and http://terminology.hl7.org/CodeSystem/usEPAsrs
This is the CodeSystem that contains codes in both US EPA Substance Registry System (http://terminology.hl7.org/CodeSystem/usEPAsrs) and US EPA Substance Registry System (http://terminology.hl7.org/CodeSystem/usEPAsrs).