This is the ValueSet that contains codes in both Impurity Classification Terminology (http://hl7.org/fhir/us/pq-cmc-fda/ValueSet/pqcmc-impurity-classification-terminology) and Impurity Classification Terminology (http://hl7.org/fhir/us/pq-cmc-fda/ValueSet/pqcmc-impurity-classification-terminology).