The main purpose of this legislation, known as the Purchased and Referred Care Improvement Act of 2025, is to update and clarify the rules regarding payment responsibilities for healthcare services provided to Native Americans through the Indian Health Service. It aims to improve the process for reimbursing patients who pay out-of-pocket for these services and to ensure that patients are not held liable for costs under certain circumstances. Key provisions of the act include changes to how liability for payment is defined.