Medicare's first mandatory specialist accountability model, the Ambulatory Specialty Model (ASM), takes effect January 1, 2027, targeting cardiologists and spine/pain specialists in roughly 25% of U.S. metro areas. Unlike voluntary value-based initiatives, ASM has no opt-out or hardship exemption. Participating clinicians face payment adjustments from -9% to +9% in Year One, based on quality, cost, care improvement activities, and interoperability metrics. The CY 2027 proposed rule represents the final opportunity to shape operational details before go-live. Affected practices must act now to confirm participant status, build care coordination infrastructure, and prepare for performance scoring that begins January 1, 2027.

Attribution errors rarely create immediate disruption. They build slowly, often unnoticed, embedded in workflows and data assumptions that appear stable on the surface. By the time these errors are visible, they are no longer easy to correct. They have already influenced performance scores, reporting accuracy, and financial outcomes. The absence of early signals is what makes them dangerous. If you are not actively managing attribution, you are reacting to it.

If your virtual cardiac care program is not mapped to reporting logic, then you are not just missing points, you are leaving defensible revenue on the table. From a CMS perspective, if the data is not captured in the right place, at the right time, and in the right format, it does not exist. The difference between high-performing programs and underperforming ones is no longer the care itself. It is whether that care can be measured, reported, and defended.

The difference between no-shows and closed loops is not subtle. It is measurable in your data, visible in your workflows, and reflected in your reimbursement. If your current system cannot consistently move patients from identification to completed screening within the reporting period, the issue is not patient behavior; it is workflow design.

December is your final checkpoint before the 2025 ACO performance year begins. With APP Plus now the mandatory framework, a few targeted checks can ensure your data, measures, and workflows are aligned. Master the streamlined six-measure set, confirm a single collection type across your entire ACO, and validate your 12-month data plan now to enter 2026 with confidence and control.

The CY 2026 Physician Fee Schedule Proposed Rule introduces major changes for ACOs, including accelerated risk progression, revised quality metrics, and new beneficiary requirements. Learn how these updates impact your financial strategy and operational workflows—and how to prepare before the September 12 comment deadline.

With the passage of the One Big Beautiful Bill Act (OBBBA), ACOs must prioritize clinician engagement in Shared Savings Program (SSP) meetings to maximize performance under new Medicare payment structures. This guide outlines 7 actionable strategies—from aligning incentives with 3.8% APM payment bumps to leveraging peer-to-peer learning and streamlined data insights—to boost participation, improve outcomes, and drive shared savings.

CMS’s seismic shift to HCC V28 is here—and if your ACO isn’t prepared, your RAF scores could plummet, slashing your Medicare Shared Savings Program (MSSP) benchmarks regardless of patient outcomes.

The Urgency:

• 67% of 2025 RAF scores now hinge on V28’s stricter rules—more HCCs, reweighted conditions, and brutal specificity demands.

• Chronic conditions like CKD Stage 3 no longer count unless paired with complications. "Diabetes" alone won’t cut it—documentation must detail complications (e.g., "diabetes with neuropathy").

• Benchmarks = Revenue. Miss the mark, and shared savings vanish—or worse, your ACO triggers shared losses.

Your Survival Kit:

1. Audit Top Codes – Does your #1 diagnosis still map to an HCC?

2. Train Clinicians – V28 demands precision. "Good enough" notes = financial risk.

3. Leverage Annual Wellness Visits – Embed HCC recapture into every AWV.

4. Adopt MEAT Criteria – Every diagnosis must show ongoing Monitor, Evaluate, Assess, Treat.

5. Track Quarterly – Don’t wait for December—run RAF reports now.

 By 2026, V28 is 100% in effect. Delay = years of disadvantage.

Protecting your benchmark isn’t optional—it’s survival.

The 2025 Medicare Shared Savings Program (MSSP) refresh brings critical updates for ACOs—including new risk tracks, quality benchmarks, and payment incentives. Whether you’re a new or experienced ACO participant, choosing between BASIC, ENHANCED, and ENHANCED+ tracks will shape your financial and operational success.