Episode-Based Payments: Charting a Course for Health Care Payment Reform

Originally published by the Center for Studying Health System Change (HSC). HSC was a nonpartisan policy research organization funded principally by the Robert Wood Johnson Foundation.

Episode-Based Payments: Charting a Course for Health Care Payment Reform

NIHCR Policy Analysis No. 1 — January 2010

Hoangmai H. Pham, Paul B. Ginsburg, Timothy K. Lake, Myles Maxfield

By 2010, a growing consensus had formed among health policy experts, legislators, and provider organizations that the American health care system's heavy reliance on fee-for-service payment was a principal driver of rising costs and fragmented care delivery. Fee-for-service reimbursement rewarded volume rather than value, paying providers for each individual test, visit, and procedure regardless of whether the totality of those services produced good outcomes for patients. Designing workable alternatives had become one of the highest priorities on the national health policy agenda.

Among the most discussed alternatives was episode-based payment, sometimes referred to as bundled payment. Under this model, a single payment would cover all or most of the services delivered to a patient for a specific clinical condition over a defined time period, rather than reimbursing each provider separately for each service rendered. The concept had gained traction because it promised to align financial incentives with the goals of efficiency and quality: providers who could deliver good outcomes using fewer unnecessary services would retain the difference, while those who ordered wasteful or duplicative care would bear the cost.

The Promise of Bundled Payments

This policy analysis by Hoangmai H. Pham, Paul B. Ginsburg, Timothy K. Lake, and Myles Maxfield examined the key design and implementation questions that would determine whether episode-based payments succeeded or failed in practice. A well-designed bundled payment system, the authors argued, could encourage providers to eliminate unnecessary tests and procedures, improve coordination across the multiple clinicians and facilities involved in an episode of care, and reduce complications and readmissions by giving providers a financial stake in the patient's overall outcome rather than just the volume of services delivered.

But the potential benefits came with considerable complexity. Moving from fee-for-service to episode-based payment required answering a series of difficult technical and political questions, and getting any of them wrong could undermine the entire enterprise.

Defining Episodes of Care

One of the most fundamental challenges was how to define an episode of care. For some conditions, such as a normal pregnancy and delivery or a hip replacement, the boundaries of the episode were relatively clear: there was a defined beginning (onset of the condition or the decision to operate), a treatment phase, and a recovery period. But for chronic conditions like diabetes or congestive heart failure, where care extends over months or years and involves multiple comorbidities, drawing clean boundaries around an episode was far more difficult. Should an episode for a heart attack include only the acute hospitalization and a 30-day recovery period, or should it extend to include the subsequent months of cardiac rehabilitation, medication management, and follow-up visits?

The analysis noted that episode definition tools such as Episode Treatment Groups (ETGs) and other clinical grouping methodologies were being refined, but no single approach had emerged as a standard. The choice of episode definition would directly affect which services were included in the bundle, which providers shared accountability, and how large the financial risk would be for those who accepted the bundled payment.

Setting Payment Rates

Establishing the right payment rate for each episode type presented another significant hurdle. Set the rate too high, and the bundled payment would do nothing to control costs. Set it too low, and providers might cut corners on quality, avoid complex patients, or simply refuse to participate. The authors discussed several approaches to rate-setting, including basing rates on historical spending patterns, using competitive bidding, or pegging rates to national or regional benchmarks. Each approach had trade-offs related to accuracy, fairness, and administrative feasibility.

Risk adjustment was critical. Patients with more severe illness or more comorbidities would predictably cost more to treat, and episode-based payment rates needed to account for this variation. Without adequate risk adjustment, providers would have strong financial incentives to cherry-pick healthier patients and avoid sicker ones, a phenomenon that would undermine the system's goals and harm the patients who most needed care.

Identifying Accountable Providers

A third key question was which providers should receive the episode-based payment and bear the associated financial risk. For a surgical episode, the answer might seem straightforward: the surgeon or the hospital where the procedure was performed. But episodes of care typically involve multiple providers — surgeons, anesthesiologists, hospitalists, radiologists, physical therapists, primary care physicians, and post-acute care facilities. Someone had to be designated as the lead provider responsible for managing the episode and distributing payments to the others involved.

The analysis observed that in markets where integrated delivery systems or large physician groups already existed, there were natural organizational structures to take on this coordinating role. In more fragmented markets, however, identifying and empowering a lead provider would be much harder and might require new organizational arrangements or intermediaries.

Compatibility with Other Payment Reforms

Episode-based payment was not the only reform model under consideration. Pay-for-performance programs, shared savings arrangements, accountable care organizations, and global capitation were all being discussed simultaneously. The authors stressed the importance of ensuring that episode-based payments were compatible with these other approaches rather than creating conflicting incentives. A provider participating in both an episode-based payment program and a shared savings arrangement, for example, needed clarity about which program's rules applied when they overlapped.

Implementation Strategy

Given the complexity involved, the authors recommended a staged implementation approach. Rather than attempting to apply episode-based payments across all conditions and all providers at once, they proposed starting with a focused set of priority conditions where episode boundaries were relatively clear, historical spending data were robust, and there was substantial variation in practice patterns suggesting room for efficiency gains. Conditions such as joint replacement, coronary artery bypass grafting, and certain cancer treatments were natural starting points.

This staged approach would allow policymakers and providers to learn from early experience, refine episode definitions and payment rates, develop the data infrastructure needed to track performance, and build the organizational capacity required for providers to manage bundled payments effectively. Over time, the program could expand to include more conditions, more complex clinical scenarios, and broader provider participation as the system's capabilities matured.

Sources and Further Reading

AHRQ — Federal health care quality research agency.

Health Affairs — Peer-reviewed health policy research.

Robert Wood Johnson Foundation — Health policy research.

Commonwealth Fund — Research on health care quality.