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Navigating CMMI’s LEAD Model: How Is This Model Different from MSSP and ACO REACH?

The newly announced Long-term Enhanced ACO Design (LEAD) Model, details of which were released in the Request for Applications (RFA) on March 31, 2026, represents CMS’ commitment to design a more stable and inclusive framework to expand participation and advance accountability for cost and quality. For organizations considering ACO participation for Performance Year (PY) 2027, it is critical to understand the key success factors that differentiate LEAD from MSSP and ACO REACH.

Organizations have until May 17, 2026 to respond to the RFA, so it is critical to chart out an ACO strategy today. ACO REACH participants in PY-2026 are eligible to submit an abbreviated application. In addition, organizations interested in future cohorts will have an opportunity to submit a standardized Letter of Interest (LOI), which CMS expects to release no later than April 20, 2026.

 

In One Sentence Each

  • MSSP – The broad, flexible entry point into value‑based care for original FFS Medicare.
  • ACO REACH – The full‑risk, equity‑focused model for advanced organizations.
  • LEAD – CMS’s next‑generation, capitation‑driven, specialist‑integrated, high‑needs‑focused ACO model.

Below is a table summarizing the key differences between the models:

LEAD MSSP ACO REACH
Model Purpose and Overview CMS’s next generation, 10-year primary care centric model with capitation, specialist integration, and high needs focus

Professional and Global Risk Options

No AHEAD overlap allowed (except primary care AHEAD in certain circumstances)

Foundational Medicare ACO program; broad entry point into value-based care

Basic (Levels A-E) to Enhanced track, each with greater downside risk

AHEAD overlap allowed

Advanced, full risk model focused on health equity, capitation, and care redesign

Professional and Global Risk Options

Model Length 10-years (2027-2036) Permanent Time-limited (PY-2026 is final participation year)
Risk-Sharing Options No AHEAD overlap allowed (except primary care AHEAD in certain circumstances) Upside-only → partial → full (Track A → ENHANCED) Professional (partial) or Global (full)
Payment Model
Core Payment Capitation-first (PCC, TCC, NPCC) FFS + shared savings/losses Capitation (PCC/TCC) + risk
Upfront Payments Advanced Payment Option (APO)

Administrative add-on (Higher-spending ACOs)

Advanced Infrastructure Payment (AIP) Optional advanced payments
Specialist Alignment Options CARA episodes (CMS‑run specialist risk) None Optional downstream arrangements
Cash Flow Prospective monthly payments Retrospective Prospective
Benchmarking
Method Historical – incorporates new methodology with stability protections Historical + regional blend Historical + regional + risk
Rebasing No rebasing for duration of ACO participation in the model Every new agreement period (5 years) Not rebased over four-year model term
Growth Rate (Trending) More favorable, creates “wedge” for savings

ACPT guardrail

National/regional Model-specific
High Needs Risk Adjustment Integrated throughout Minimal Present – separate for “High Needs” ACOs
Regional Penalty Reduced Significant Minimal
Discounts Present (Global risk only)

Retention incentive (2%)

Not present Present
Beneficiary Alignment
Method Prospective and hybrid

Hybrid alignment: two opportunities – before start of PY and mid-year – to add Participant TINs for claims-based alignment

Prospective or retrospective

No mid-year additions for prospective alignment

Prospective only

Annual basis; no mid-year additions

Voluntary Alignment Very strong; key strategy (monthly if Hybrid) Allowed Strong (quarterly)
TIN Alignment No TIN shuffling across LEAD ACOs affiliated with same convener within 3 PYs Whole TIN approach TIN + NPI split allowed
High Needs Flexibility Integrated across entire model None Separate High Needs track
Thresholds
  • New Entrants: 1,000 in PY1
  • Re-Entering: 5,000
  • Either New Entrants or Re-Entering if over 40% meet High Needs eligibility criteria: 800 in PY1

Alignment buffer offered if within 10% below alignment minimums

5,000 attributed lives minimum for participation 5,000 attributed lives for New Entrant ACOs; 1,250 for High Needs ACOs
Specialist Alignment CARA episodes: CMS‑administered specialist risk, including new falls‑prevention episode (Global track only) Minimal; no structured risk model Optional downstream arrangements
High Needs Beneficiaries High‑Needs policies integrated across the entire model (alignment, risk, benchmark, care delivery) Limited focus Dedicated High Needs track
Care Delivery Requirements
24/7 Access Required Encouraged Required
Home‑Based Care Required for High‑Needs Optional Required for High‑Needs
Advanced Care Planning Required Encouraged Required
Healthy Living Strategy Core program pillar offering Benefit Enhancements and Beneficiary Engagement Incentives, among other initiatives (Tech Enabler Initiative and Prevention and Quality Plan requirement) None None
Waivers
  • 3-Day Skilled Nursing Facility (SNF) Rule
  • Care Management Home Visits
  • Post-Discharge Home Visits
  • Home Health Homebound Services
  • Nurse Practitioner and Physician Assistant Services
  • Concurrent Care for Beneficiaries that Elect Medicare Hospice Benefit
  • Telehealth Benefit
Quality Claims-based and CAHPS, 3% withhold

Phases in two (2) new quality measures on top of ACO REACH core measures (eCQMs) – optional for PYs 1 and 2, pay for reporting for PYs 3 and 4, pay for performance in PY5-10

Claims-based, CAHPS and clinical measures

Larger scale reporting (eCQM/MIPS)

Claims-based, CAHPS and clinical measures, 5% withhold in PY-2026

Five (5) core quality measures

Administrative Complexity Very high; capitation, CARA, High-Needs care, prevention, data integration Moderate; accessible to most groups High; requires advanced capabilities
Model Overlaps CMS prohibits simultaneous participation between LEAD and MSSP at the TIN level. Current ACO Reach participants will have an abridged application for LEAD
Application Timeline May 17, 2026 deadline for PY 2027 applicants June 9, 2026 – June 23, 2026 for Phase I Submission for PY-2027 applicants Model sunsetting end of PY-2026

 

How COPE Health Solutions Can Help

Organizations should assess where they fall along the value-based care maturity spectrum and choose the model that fits best. Given LEAD’s requirement to take some level of downside risk upon entry, participation in the program will require thoughtful preparation across several areas. Organizations should evaluate:

  • Financial readiness, including the ability to manage downside risk from the get-go and model performance under new benchmarking methodologies
  • Operational capabilities, such as care coordination, population health management, and high-needs patient engagement
  • Data and technology infrastructure, including readiness for evolving quality reporting requirements
  • Governance and compliance structures, aligned with CMS expectations for ACO oversight and accountability

COPE Health Solutions supports clients across the full lifecycle of ACO participation, including:

  • Strategic advisory to decide best fit model for your organization and at key decision deadlines throughout 2026
  • Financial assessments and scenario modeling to evaluate performance under various tracks and capitation/quality decisions in each model
  • Network development, funds flow and provider recruitment/relations, including specialist integration, to establish strong ACO governance and provider alignment
  • Care model design, build and/or configuration to service a High Needs population, including home-based primary care
  • Quality/HCC gap closure to meet model goals of true prevention
  • Data integration and real-time analytics
  • Business and operational readiness evaluations aligned with CMS application criteria
  • Implementation and ongoing ACO operations and compliance support to maximize performance

With the LEAD application window already underway, organizations should act now to assess their readiness and define their path forward; those interested in a PY 2027 start with LEAD should begin readiness assessments and applications immediately. COPE Health Solutions is ready to support your journey into the next generation of accountable care.

Contact info@copehealthsolutions.com to schedule a briefing to get started.

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