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The Heart of ASC Growth: Cardiology Is Moving Outpatient—A Moment to Check the Financial Pulse 

Author:
Dylan DeScheda, Vice President, Accounts Receivable at nimble solutions

February is Heart Month—and there’s no better time to spotlight one of the most meaningful shifts happening in ambulatory care today: the rapid rise of cardiology in ambulatory surgery centers (ASCs). 

Not long ago, cardiovascular care was viewed as a hospital-only service line. Today, that assumption no longer holds. Advances in technology, evolving Medicare policy, and growing cost pressure are reshaping where—and how—cardiac procedures are delivered. 

For ASC leaders and cardiology groups, the opportunity is real. But so is the complexity that comes with it—especially when financial strategy lags behind clinical expansion. 

Cardiology Is the Fastest-Growing ASC Specialty 

Cardiology has emerged as the fastest-growing specialty in ASCs, with industry data projecting that nearly one-third of cardiovascular procedures will move to outpatient settings by 2025 (Becker’s ASC Review). 

This shift is not limited to low-acuity cases. ASCs are increasingly performing procedures such as: 

  • Cardiac catheter ablation 
  • Angioplasty and vascular stenting 
  • Pacemaker and ICD placement 
  • Electrophysiology services 

The growth trajectory is striking. Single-specialty cardiology ASCs quadrupled from 55 centers in 2018 to more than 220 by 2023, and over 230 Medicare-certified ASCs now offer cardiovascular services. Becker’s also reported 26 cardiology-focused ASC openings or announcements in 2024 alone, reinforcing that this momentum is accelerating—not slowing.   

Source: Becker’s ASC Review, “Cardiology’s strong start to 2026” 

Medicare Policy Is Opening the Door 

One of the most important catalysts behind outpatient cardiology growth is Medicare policy. 

CMS has steadily expanded the ASC Covered Procedures List, approving more high-acuity cardiovascular procedures for outpatient reimbursement—including coronary interventions and electrophysiology services (CMS). Each update meaningfully lowers the barrier for cardiology groups and ASCs to move procedures out of the hospital and into ambulatory settings. 

For many organizations, these Medicare changes have been the tipping point—turning outpatient cardiology from a future consideration into a near-term growth strategy. 

Source: CMS ASC Covered Procedures List 

What’s Making Outpatient Cardiology Possible 

Policy alone doesn’t drive adoption. Several forces are converging to make outpatient cardiology not just feasible—but attractive. 

Technology That Reduces Risk 

Less invasive techniques, safer anesthesia protocols, improved imaging, and device innovation have significantly reduced procedural risk. These advancements allow complex cardiac cases to be performed safely and efficiently outside the hospital setting. 

Proven Operational Efficiency 

Efficiency remains one of the strongest arguments for outpatient cardiology. According to HST Pathways’ State of the Industry Report, cardiology OR times declined 28% in 2024, reaching an average of 34.7 minutes—supporting faster throughput and more predictable scheduling than hospital environments. 

Source: HST Pathways, State of the Industry Report 

Cost Pressure Meets Growing Demand 

Heart disease prevalence continues to rise as the population ages, increasing demand across cardiovascular services. At the same time, ASCs offer a lower-cost, more convenient site of care for patients and payers—an increasingly important advantage as reimbursement tightens. 

Growth Is Real—But So Is the Pressure 

While cardiology’s expansion is undeniable, the next phase will test operational and financial discipline. 

Several industry trends are shaping what outpatient cardiology will look like over the next decade: 

  • Demand is surging. Heart failure prevalence is projected to increase 46% by 2030, driving volume across imaging, interventional cardiology, and electrophysiology (AMN Healthcare). 
  • The workforce is tightening. More than 26% of cardiologists are 61 or older, and retirements are expected to outpace new entrants through 2031 (AAMC). 
  • Margins are under strain. CMS physician fee schedule reductions—including a 2.83% cut for 2025—are colliding with rising labor, supply, and device costs (CMS). 
  • Outpatient growth is outpacing inpatient. Cardiac procedures performed in outpatient settings are projected to grow 25% by 2035, compared with just 8% growth for inpatient procedures (Becker’s ASC Review). 
  • Consolidation is accelerating. Private equity and large health systems are investing heavily in outpatient cardiology platforms, reshaping competitive dynamics (Becker’s ASC Review). 

Together, these forces are making cardiology one of the most strategically important—and operationally demanding—service lines in ASCs. 

Efficiency Is Up. Revenue Per Case Is Not. 

This is where many organizations are surprised. 

Despite improved efficiency, financial performance has not kept pace with procedural growth: 

  • Average net revenue per cardiology case declined 8%, from $5,014 to $4,611 
  • Cardiology accounted for 24% of total ASC block time utilization in 2024, increasing its impact on overall center economics 
  • Days to bill dropped to five, down from 7.9 the prior year—yet payment reliability remains inconsistent, particularly for newer ASC-eligible and device-intensive procedures 

Sources: Avanza Healthcare Strategies – Key ASC Benchmarks & Industry Figures; HST Pathways 

In short: faster cases don’t guarantee stronger margins. Without disciplined payer strategy, contract alignment, and reimbursement validation, cardiology growth can quietly erode cash flow. 

What We’re Seeing Across Cardiology  

At nimble, we work closely with cardiology groups and ASC leaders navigating this transition. A consistent theme emerges: clinical readiness often outpaces financial readiness. 

Organizations are adding procedures quickly—sometimes as soon as Medicare approvals open the door—but payer contracts, reimbursement logic, and payment recovery processes don’t always evolve at the same pace. The result is underpayment exposure that may not surface until months after go-live. 

Being Financially Prepared Is at the Heart of ASC Cardiology Success 

Heart Month is a reminder that strong outcomes depend on a healthy foundation. For cardiology ASCs, that foundation is financial readiness. 

As more high-acuity cardiac procedures move outpatient, success hinges on: 

  • Payer strategy and contract readiness before new procedures launch 
  • Reimbursement validation to identify underpayments early 
  • Payment recovery frameworks for device-intensive and complex cases 
  • Clear visibility into cash per case to understand true financial performance 

Growth without financial discipline puts margins at risk. Growth supported by revenue integrity turns cardiology into a long-term advantage. 

The Bottom Line 

At the heart of cardiology’s rise in ASCs is a simple truth: outpatient cardiovascular care is here to stay. Medicare policy has opened the door—but sustained success depends on what organizations do next. 

The ASCs that win will be those that pair clinical innovation with disciplined financial strategy—ensuring cardiology growth translates into durable, measurable results. 

This Heart Month, ASC leaders have an opportunity to not just embrace cardiology’s momentum—but to build it on a foundation strong enough to last. 

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About the author

Dylan DeScheda is the VP of Accounts Recievable at nimble solutions, the leading provider of revenue cycle management solutions for surgical organizations.