This is the ValueSet that contains codes in both X12 278 Review Decision Reason Codes (http://hl7.org/fhir/us/davinci-pdex/ValueSet/X12278ReviewDecisionReasonCode) and X12 278 Review Decision Reason Codes (http://hl7.org/fhir/us/davinci-pdex/ValueSet/X12278ReviewDecisionReasonCode).