What establishes the rights and responsibilities of participants in electronic funds transfer systems?

The correct choice is the Electronic Funds Transfer Act. This legislation was enacted to promote the use of electronic payments and to establish the rights and responsibilities of consumers and financial institutions involved in electronic funds transfer (EFT) systems. It provides essential protections for consumers, including outlining disclosure requirements, error resolution procedures, and liability limits for unauthorized transactions.

This act is critical because it addresses the intricacies of electronic transactions, ensuring that both consumers and financial institutions understand their rights and obligations. It includes provisions concerning electronic debit and credit transactions, enhancing security and transparency in electronic payment systems.

The other options provided, while relevant to financial and healthcare contexts, do not specifically govern electronic funds transfers. Claims Adjustment Reason Codes relate to coding in the billing process for healthcare insurance claims. The Consumer Credit Protection Act primarily addresses consumer credit and loans, not electronic transfers. The Health Coverage Accessibility Act focuses on health coverage provisions, leaving the administration of electronic fund transfer systems to the Electronic Funds Transfer Act.