Administrative Transactions - Non-Claims Administrative Transaction Acknowledgements Enrollment and Disenrollment in a Health Plan Health Care Eligibility Benefit Inquiry and Response Health Care Eligibility Benefit Inquiry and Response for Retail Pharmacy Coverage Administrative Transactions to Financial Exchanges Electronic Funds Transfer for Payments to Health Care Providers Health Care Payment and Remittance Advice Health Plan Premium Payments for Covered Members Administrative Transactions to Support Clinical Care Health Care Attachments to Support Claims, Referrals and Authorizations Referral Certification and Authorization for Pharmacy Transactions Referral Certification and Authorization Request and Response for Dental, Professional and Institutional Services CMS Interoperability Standards for Provider to Provider Communication Durable Medical Equipment/Home Health Agency Document Request Durable Medical Equipment/Home Health Agency Order Submission Durable Medical Equipment/Home Health Agency Signature Request Health Care Claims and Coordination of Benefits Health Care Claim Status Request and Response Health Care Claims or Equivalent Encounter Information for Dental Claims Health Care Claims or Equivalent Encounter Information for Institutional Claims Health Care Claims or Equivalent Encounter Information for Professional Claims Health Care Claims or Equivalent Encounter Information for Retail Pharmacy Claims Health Care Claims or Equivalent Encounter Information for Retail Pharmacy Supplies and Professional Services Operating Rules to Support Administrative Transactions Eligibility and Benefits Operating Rules for Standard Transactions Operating Rules for Benefit Enrollment Operating Rules for Claims Operating Rules for Electronic Funds Transfer (EFT) and Electronic Remittance Advice (ERA) for Payments and Reconciliation Operating Rules for Premium Payments Operating Rules for Prior Authorization and Referrals Operating Rules to Support Claim Status Transactions Operating Rules to Support Electronic Prescribing Transactions