CAQH CORE Operating Rules for Connectivity CAQH CORE Operating Rules for Electronic Funds Transfer (EFT) & Electronic Remittance Advice (ERA) CAQH CORE Operating Rules for Eligibility & Benefits CAQH CORE Operating Rules for Health Care Claims CAQH CORE Operating Rules for the Exchange of an Attributed Patient Roster CAQH CORE Operating Rules to Support Claim Status CAQH® CORE Operating Rules for Benefit Enrollment and Disenrollment CAQH® CORE Operating Rules for Premium Payments CAQH® CORE Operating Rules for Prior Authorization and Referrals Operating Rules to Support Electronic Prescribing Transactions