Which of the following is NOT a healthcare reimbursement model aimed at improving quality?

Self-Pay Systems do not inherently aim to improve quality in healthcare delivery. This reimbursement model is characterized by patients paying directly for services without third-party insurance involvement, meaning there are no incentives or accountability mechanisms built into the payment structure that focus on enhancing the quality of care received.

In contrast, the other options—Patient-Centered Medical Homes, Accountable Care Organizations, and Bundled Payments—are all specifically designed to foster improvements in quality.

Patient-Centered Medical Homes emphasize coordinated care and comprehensive services that prioritize the patient's overall health and wellness, which typically leads to better health outcomes. Accountable Care Organizations encourage providers to work collaboratively to deliver high-quality care while managing costs, creating the motivation for continuous improvement in service delivery. Bundled Payments incentivize providers to offer effective and efficient care by bundling payments for multiple services related to a specific treatment or condition, thus promoting high-quality outcomes.

These models focus on various methodologies to incentivize providers not only to deliver care but to deliver care that is effective, efficient, and centered around the needs of patients, which is not a characteristic of the Self-Pay Systems.