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Most cardiology practices have built their workflows around the encounter. The Ambulatory Specialty Model (ASM) is built around the interval — the weeks and months between visits when patients are either drifting toward decompensation or being actively kept from it. For select cardiologists managing heart failure (HF) populations, that distinction will carry financial consequences starting January 1, 2027.
ASM is a mandatory CMS Innovation Center payment model placing cardiologists under direct financial accountability for longitudinal HF outcomes. CMS selected participants through a retrospective Medicare claims analysis, targeting clinicians in specific core-based statistical areas (CBSAs) who treated at least 20 original Medicare beneficiaries with HF during a qualifying 12-month period. Cardiologists in designated regions who meet that threshold are automatically enrolled. Performance-based payment adjustments to Medicare Part B claims range from -9% to +9%, assessed annually over five years. Those payment adjustments will apply to all Part B claims — not just those tied to HF patients.
The payment structure has a notable design element: quality and cost performance are evaluated at the individual clinician level, while care improvement activities and promoting interoperability are assessed at the group level. A cardiologist's personal clinical metrics and their practice's organizational workflows both inform the final payment outcome, meaning individual performance alone won't fully protect against group-level gaps, and vice versa.
Physiologic Signals and the Case for Continuous Monitoring
ASM's performance metrics are oriented toward hospitalizations, emergency utilization, and disease stability over time — outcomes shaped by what happens between clinic visits. The CHAMPION trial established the clinical foundation: hemodynamic-guided management using implantable pulmonary artery pressure monitoring reduced heart failure hospitalizations by 37% in NYHA Class III patients. The underlying principle extends well beyond implantable hardware. Physiologic signals precede symptoms, and earlier access to those signals creates earlier intervention opportunities.
Remote patient monitoring (RPM) of daily weight, blood pressure, and peripheral oxygen saturation provides access to these signals, at scale, across an attributed HF population. A two-pound weight gain over 24 to 48 hours — or a sustained upward trend across a week — typically precedes symptomatic fluid overload by enough time to allow diuretic adjustment or direct clinical contact before an acute presentation. For patients on neurohormonal blockade, longitudinal blood pressure data also supports uptitration of ACE inhibitors, ARBs, and angiotensin receptor-neprilysin inhibitors (ARNIs) toward guideline-directed medical therapy (GDMT) targets. Fewer than 25% of eligible HF patients in real-world practice are prescribed all three recommended GDMT medication classes — a gap that continuous monitoring creates a realistic opportunity to close.
Care Management as a Clinical Discipline
Monitoring generates data. When paired with RPM, CCM provides the structured clinical response layer that converts physiologic alerts into timely intervention — closing the loop between data and care. Chronic care management (CCM) requires a minimum of 20 minutes of non-face-to-face care management activity per month for patients with two or more chronic conditions, encompassing care plan maintenance, medication reconciliation, and care coordination. For HF patients — who often carry concurrent diagnoses of hypertension, diabetes, atrial fibrillation, and chronic kidney disease — monthly structured contact provides the framework for adherence assessment, symptom surveillance, and cross-specialty coordination. These are the clinical touchpoints through which subclinical deterioration gets caught and GDMT gets optimized between visits.
Under ASM's group-level assessment of care improvement activities, practices that have operationalized CCM as part of their HF workflow will have a meaningful structural advantage. The documentation discipline CCM requires — care plan maintenance, time tracking, coordination records — also generates the evidence trail that supports quality reporting.
The AFib Dimension
Subclinical deterioration in HF patients doesn't always originate in fluid balance. For a significant portion of the attributed population, atrial fibrillation (AFib) is the hidden driver. AFib is present in roughly 40% of hospitalized heart failure patients, with prevalence rising toward 50% in the most advanced cases, contributing to volume overload and reduced cardiac output through rate-related cardiomyopathy and loss of atrial contribution to ventricular filling. For practices with electrophysiology capabilities, integrating rhythm monitoring into HF management creates an opportunity to identify AFib burden as a driver of decompensation — and to address it through rate control optimization, anticoagulation review, or rhythm control consideration before that deterioration produces the utilization events that register in ASM scoring.
Four Months Out
Cardiologists in designated CBSAs who meet the claims threshold are already identified — CMS made those determinations through historical data, not future enrollment. The practices that will perform well under ASM are those that use the remaining months before launch to build or strengthen remote monitoring programs, operationalize care management workflows, and establish the documentation systems that quality reporting depends on. HF management has always required sustained, proactive engagement. ASM makes the financial stakes of that engagement explicit.
Build Your ASM Infrastructure Now
The practices that earn positive payment adjustments under ASM will be the ones already running remote monitoring and care management when the model launches. Prevounce equips cardiology practices to operate RPM and CCM at scale, handling device logistics, time tracking, and the documentation that quality reporting depends on. Put the workflows in place now, while there's still runway to refine them.
Book a consultation with our experts to see how Prevounce supports your heart failure population.
* Disclaimer: The above information is for informational purposes only and does not constitute legal, medical, or other professional advice. Billing and coding requirements — especially in the telehealth space — can change and be reinterpreted often. You should always consult an attorney and/or medical billing professional prior to submitting claims for services to ensure that all requirements are met.