How quality data and STS star ratings boost a hospital's bottom line | Viewpoint

The Society of Thoracic Surgeons star ratings carry significant weight for hospitals with open heart surgery programs.

While often viewed as a clinical benchmark, these ratings also have substantial strategic and financial implications, particularly for hospital chief financial officers, influencing everything from referral volume to physician recruitment and payer negotiations.

In short, an investment in improving or maintaining a top three-star STS rating can yield a significant return.

Understanding the STS star rating system

The STS National Database evaluates performance in cardiothoracic surgery using a rigorous, risk-adjusted methodology. Hospitals receive a rating between one and three stars based on outcomes, process adherence, and data integrity over a 36-month rolling period. Updated every six months, these ratings reflect clinical effectiveness and the quality and timeliness of data documentation.

Unlike CMS star ratings, STS scores are narrowly focused on surgical care and are not tied directly to reimbursement. Nevertheless, their influence is far-reaching. A three-star STS rating signifies statistically superior performance and enhances a hospital’s reputation among patients, referring providers, potential hires, and payers.

Reputation is critical given that open-heart surgery programs are among the most resource-intensive and high-revenue service lines in many hospitals. They require significant investments in personnel, infrastructure, technology, and postoperative care. Due to their complexity and cost, these programs are subject to constant scrutiny for both clinical quality and financial sustainability.

Hospitals with strong STS ratings are often better positioned to increase elective case volume, justify capital and personnel investments, and support marketing efforts. A high rating can also serve as a critical differentiator in competitive markets. Conversely, a mediocre rating, even in the presence of strong clinical outcomes, can still reflect poorly on the organization.

The role of data

Often, however, a poor star rating can be due to the quality and completeness of the data submitted. The STS registry requires more than 400 data fields per case. Even high-performing clinical teams can receive lower ratings if their documentation does not align precisely with registry standards.

Timeliness is another key factor. While STS requires data submission every three months, many leading hospitals submit data monthly to maintain a steady feedback loop for quality improvement. The ability to catch documentation gaps or clinical trends early can make a significant difference in star performance over the three-year reporting window.

Moreover, because each case remains part of the reportable cohort for 36 months, gaps in data quality today can affect ratings for years into the future. Ensuring consistent documentation standards and rapid abstraction processes is essential to protect long-term performance.

Hospitals face several challenges in meeting STS reporting requirements. The volume and complexity of data can overwhelm clinical teams, particularly in high-volume programs. Inconsistent documentation practices across departments, variability in EHR systems, and limited internal abstraction resources often contribute to delays, inaccuracies, or incomplete submissions.

These issues can obscure true clinical performance and make it difficult for hospitals to achieve or maintain high star ratings, despite delivering excellent care. Overcoming these challenges requires both dedicated personnel and scalable, accurate abstraction processes.

Technological and clinical expertise

To meet the demands of the STS registry, many hospitals engage external data abstraction partners. These relationships can offer significant strategic and operational advantages, provided the right capabilities are in place.

A reliable partner should be able to work across various electronic health record systems, including hybrid and custom-built platforms. They should combine experienced clinical abstractors with clinically validated AI-powered tools that increase both speed and accuracy. Effective partners also provide near real-time feedback on documentation gaps, allowing hospitals to make adjustments before the submission window closes.

Hospitals should expect their partners to thoroughly understand STS’s abstraction rules and ensure that their data abstraction methods align with these standards. This helps maintain consistency across submissions and simplifies audit preparation. Ideally, these partnerships reinforce internal trust in the data, allowing hospitals to act quickly on insights, whether to update documentation workflows or improve specific clinical processes.

The objective of these efforts is not to change how care is delivered, but to ensure that the high-quality care being provided is properly captured and reflected in registry submissions.

Financial and operational impact

While assigning a precise financial value to achieving a three-star STS rating would be speculative, the operational benefits are well understood within the healthcare community. Improvements in post-surgical recovery processes, such as reducing ICU length of stay or minimizing complications, directly reduce per-case costs. Accurate and timely registry data enables hospitals to monitor and adjust these metrics more effectively.

A stronger STS rating also enhances a hospital’s market visibility, potentially increasing referral volume and patient choice. High ratings serve as a recruitment tool for skilled cardiac surgeons and clinical teams. For payer negotiations, documented clinical excellence can strengthen a hospital’s position, especially in value-based contracts where outcomes influence network inclusion or bonus payments.

There are also indirect savings in administrative efficiency. Clean, complete data submitted on time reduces the need for follow-up or corrections, improves registry audit readiness, and supports a faster quality improvement cycle.

A strategic priority for CFOs

For hospitals with cardiothoracic programs, the STS star rating is more than a quality marker. It is a critical measure of program maturity, operational alignment, and strategic potential. These ratings influence downstream revenue, support talent acquisition, and contribute to long-term financial performance.

As expectations for data transparency and outcome reporting continue to grow, hospitals that invest in the necessary systems and partnerships to support high-quality data abstraction will be well-positioned to thrive. For CFOs, these investments are not simply compliance measures; they are strategic decisions that support sustained excellence and financial strength.

Betsy Castillo, RN, is director of clinical abstraction for Carta Healthcare.