CMS LEAD Model: Key Changes ACO Leaders Need to Know

The CMS LEAD Model, or Long-term Enhanced ACO Design, is more than a new name for ACO REACH. It is a structural redesign intended to address the barriers that pushed providers away from value-based care over time.

Whether your organization has been involved in ACO REACH or has been sitting on the sidelines, time is limited. Applications opened in March 2026, and the model is scheduled to launch on January 1, 2027, giving organizations time to evaluate readiness, plan infrastructure, and allocate resources.

What Carried Over From ACO REACH

LEAD did not start from scratch. The core architecture of the accountable care model remains in place, with targeted refinements.

Several foundational elements remain intact:

Two-sided risk tracks: Global and Professional risk options both carry over, giving ACOs flexibility based on financial readiness
Prospective beneficiary alignment: Patients are assigned before the performance year begins
Total cost of care accountability: ACOs remain responsible for the full spend of their aligned population
Focus on underserved populations: The emphasis on dually eligible and high-needs patients is not only preserved but expanded

The accountability framework established under ACO REACH continues to shape the foundation of LEAD.

Key Changes in the CMS LEAD Model ACO Leaders Need to Know

This is where the major differences begin to emerge. LEAD introduces structural changes that may significantly affect how ACOs organize operations and plan participation.

Benchmarks That Don’t Reset

With ACO REACH, the benchmarks of high-performing ACOs narrowed each cycle, which is called the ratchet effect. LEAD is designed to reduce this issue through a fixed 10-year performance period.

Your benchmark is set once and holds for a decade
High performers are no longer penalized for their own efficiency
Organizations can plan and invest with genuine long-term visibility

This change may make LEAD more attractive to providers who found earlier ACO models difficult to sustain.

CARA and the New Approach to Specialist Integration

CMS Administered Risk Arrangements (CARA) is one of the most practically significant additions in LEAD. Previously, building financial relationships with specialists required ACOs to negotiate, contract, and manage everything independently, a process most smaller organizations couldn’t sustain.

CARA changes that by:

Sharing episode-level data directly between ACOs and preferred specialists
Providing CMS-supported contracting templates so ACOs aren’t building legal frameworks from zero
Allowing configurable episode design based on patient population
Making direct payments to ACOs and specialists based on agreed arrangements

For ACO leaders, specialist integration now has a more structured administrative pathway.

Infrastructure Support for Smaller and Rural Providers

LEAD includes upfront infrastructure funding for rural and smaller organizations that may not be able to absorb high startup costs. Lower beneficiary alignment minimums are also available for ACOs with providers new to accountable care, removing a threshold that previously locked smaller practices out entirely.

Medicaid Integration Component

LEAD expands Medicare-Medicaid coordination through a more structured approach to aligned care incentives. CMS will identify two states between March 2026 and December 2027 to develop ACO-Medicaid partnership frameworks, creating real incentives for providers across both programs to share data and coordinate care for dually eligible beneficiaries.

What ACO Leaders Need to Decide Now

With enrollment underway, organizations should move quickly to assess readiness and complete planning steps. These are the decisions your organization shouldn’t delay:

Choose your risk track carefully

Global risk means 100% of savings and 100% of losses. Professional risk caps both at 50%. Without strong reserves and analytics infrastructure, Global risk may create significant financial exposure.

Assess your data readiness for CARA

CARA is only valuable if your organization can act on episode-level data. If analytics capabilities are limited, organizations may not be able to fully benefit from CARA.

Identify your preferred specialists now

CARA requires Episode-Based Risk Arrangements with downstream providers before the model starts. That means relationship-building and contracting need to begin well before the model start date.

Know your patient population

Organizations serving high proportions of dually eligible, rural, or complex-needs patients may see greater strategic value in LEAD’s design. If that describes your panel, the model is likely a strong fit.

Conclusion

The move from ACO REACH to LEAD introduces structural changes aimed at improving benchmark stability, specialist coordination, rural participation, and Medicaid integration. For ACO leaders, the priority is determining whether the organization is operationally prepared to participate effectively.

Get LEAD-Ready With Persivia

Persivia’s AI-driven Digital Health Platform supports the operational capabilities organizations need for LEAD participation, like risk stratification, care management, quality tracking, and episode-level analytics, all within one platform. Organizations moving from ACO REACH or entering LEAD fresh use Persivia’s solution to manage the clinical, operational, and financial layers the model requires through an integrated platform instead of relying on disconnected tools.

From ACO REACH to LEAD: What Changed, What Carried Over, and What ACO Leaders Need to Decide

What Carried Over From ACO REACH