This is the ValueSet that contains all the codes in CoverageEligibilityResponse Auth Support Codes (http://terminology.hl7.org/ValueSet/coverageeligibilityresponse-ex-auth-support) and CoverageEligibilityResponse Auth Support Codes (http://terminology.hl7.org/ValueSet/coverageeligibilityresponse-ex-auth-support). E.g. what you have to deal with if you get resources containing codes in either of them