Site-Neutrality Policies Accelerate Outpatient Imaging Shift
Proposed site-neutral payment policies are intensifying competition between hospitals and ambulatory surgery centers (ASCs) by reducing reimbursement gaps. Industry analysis suggests private payers are mirroring CMS's reimbursement changes for hospital outpatient departments, further pushing high-value imaging to freestanding centers. In response, health systems are aggressively pursuing joint ventures and building their own freestanding imaging facilities to capture patient volume in lower-cost settings.
- The reimbursement gap between Hospital Outpatient Departments (HOPDs) and Ambulatory Surgery Centers (ASCs) can be substantial, with Medicare paying ASCs about 58% less than HOPDs for the same procedure. For some commercial payers, the reimbursement for procedures in a HOPD can be over 1,300% higher than in an ASC or office setting. For example, a colonoscopy with lesion removal could be reimbursed at $3,428 in a HOPD versus $1,080 in an ASC by a commercial payer. - One of the primary drivers for site-neutral payment policy is to curb healthcare spending by removing financial incentives for hospital systems to acquire physician practices and convert them into higher-reimbursed outpatient departments. Proponents argue this could slow provider consolidation. Expanded site-neutral policies have the potential to save Medicare up to $157 billion over a decade. - The transaction volume for diagnostic imaging centers has seen consistent growth over the past five years, with a notable trend of health systems pursuing joint ventures with large independent imaging companies. These partnerships allow hospitals to offer more affordable freestanding options to retain patient volume while leveraging the operational efficiencies of experienced imaging operators. - The shift to lower-cost settings is complicated by a significant, and growing, shortage of radiologists and radiology technologists. The vacancy rate for technologists surged from 6.2% to 18.1% in just three years, leading to operational bottlenecks, increased patient wait times, and in some cases, the temporary closure of imaging centers. - Artificial intelligence is being rapidly adopted to mitigate workforce shortages and improve workflow efficiency. As of early 2026, the FDA has cleared over 1,000 AI-powered tools for clinical imaging, which assist with tasks like initial image screening, prioritizing urgent cases, and automating routine administrative work. - While around 40% of all radiology volume is now performed in outpatient centers, hospitals still represent the largest single site for imaging nationwide at 41.5% of claims. However, this varies significantly by region; in states like Florida, Arizona, and Colorado, freestanding imaging centers have a much higher market penetration.
