Last updated: June 19, 2026
A Cardiac Implantable Electronic Device (CIED) includes pacemakers, implantable cardioverter-defibrillators (ICDs), cardiac resynchronization therapy devices (CRT), and implantable loop recorders. Remote Patient Monitoring (RPM) refers to continuous or periodic collection of physiological data from these devices and from wearable sensors outside a clinical setting. Medicare reimburses RPM through CPT codes 99453 (setup), 99454 (device supply and daily recordings), and 99457/99458 (monthly treatment management), while CIED-specific remote interrogation is billed under 93296–93299. In 2026, vendor neutrality defines a leading platform and means the platform ingests, normalizes, and acts on data from every major OEM without separate logins or manual reconciliation.
Any practice implanting devices from more than one manufacturer faces an immediate operational problem. Medtronic, Boston Scientific, Abbott, and Biotronik each maintain separate, non-interoperable portals. Staff must log into each portal individually, manually transcribe findings into the EHR, and track billable events across disconnected systems. The administrative cost is measurable: Medicare spending on RPM rose from $6.8 million in 2019 to $536 million in 2024, and the number of Medicare enrollees receiving RPM grew to nearly 970,000 by 2024. That volume growth amplifies every inefficiency in a fragmented workflow. A federal HHS Office of Inspector General review found that approximately 43% of RPM enrollees from 2019–2022 did not receive all three required billing components, a compliance gap that directly produces rejected claims and lost revenue for practices without automated documentation.
Data normalization across OEMs is technically complex. Each manufacturer transmits device data in different formats, including APIs, HL7 feeds, XML files, and unstructured PDFs. Rhythm360 addresses this with a multi-layer ingestion architecture that combines API connections, HL7 parsing, and computer vision OCR for PDF-based reports. A redundant data feed system acts as a failsafe when an OEM server is unavailable and supports a platform-wide transmissibility rate exceeding 99.9%. The University of Chicago Medicine processed more than 73,000 reports annually through Rhythm360 in calendar year 2025, averaging more than 18,000 reports per quarter. That volume demonstrates that unified data ingestion scales to high-volume academic environments without degradation.
“When large amounts of data are collected on a daily basis, it is overwhelming for clinicians to interpret and use this data to guide decisions,” according to Anjali B. Thakkar, MD, a member of the American College of Cardiology's Health Care Innovation Council. Rhythm360's AI triage layer filters non-actionable transmissions before they reach the clinical queue and reduces critical alert response times by up to 80%. The impact appears clearly in urgent scenarios. When a patient’s device transmits new-onset atrial fibrillation on a Saturday morning, the platform surfaces that alert immediately to the on-call clinician. By Saturday afternoon, the patient can be on anticoagulation therapy or have their device reprogrammed, while manual portal-by-portal workflows often delay that intervention. As noted in UCM's implementation review, “Decision support, including AI-assisted decision support, will become increasingly important as data volumes grow.”
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AI triage reduces the volume of alerts that reach clinicians, and EHR integration determines how usable that filtered information becomes. EHR integration depth separates platforms that reduce documentation burden from those that simply create another data silo. Rhythm360 supports bi-directional integration with Epic, Cerner, Athenahealth, eClinicalWorks, and Greenway Health via HL7 standards. Bi-directional integration means data flows both ways. Device findings push into the EHR as structured observations, and patient demographic or medication data pulls back into the monitoring platform. Thakkar, MD, notes that device data should flow directly into existing clinical systems to facilitate easier use in clinical decision-making, a standard Rhythm360 meets through FHIR Observation mapping that makes rhythm and physiological data visible during clinic visits without tab-switching. Reliable EHR data flow is the primary determinant of billing capture rates for RPM programs, so integration depth functions as a financial variable as well as a clinical one.
Revenue leakage in cardiac RPM programs originates from three sources. Practices miss billable events, submit incomplete documentation for claims, and fail to meet the monthly time thresholds required for 99457 and 99458. Rhythm360 automates tracking of each CPT milestone, including device supply days for 99454, time accumulation for 99457, and interrogation cycles for 93298, and generates audit-ready documentation at the point of care. Practices implementing Rhythm360 have recorded up to a 300% increase in revenue generation through more complete CPT code capture and improved staff efficiency. UCM's clinical team confirmed, “We have improved billing and accountability for our patients after the integration.”
The table below compares five vendor-neutral cardiac RPM platforms on four measurable dimensions. Response-time reduction and revenue lift figures reflect published or vendor-disclosed outcomes. EHR integration depth reflects publicly documented connector support, and onboarding timeline reflects vendor-stated implementation ranges. Qualitative rankings do not appear.
| Platform | Critical Alert Response-Time Reduction | Revenue Lift (CPT Optimization) | Bi-Directional EHR Connectors | Onboarding Timeline |
|---|---|---|---|---|
| Rhythm360 (RhythmScience) | Up to 80% reduction | Up to 300% increase | Epic, Cerner, Athenahealth, eClinicalWorks, Greenway Health via HL7 | Days to weeks |
| Implicity | Not publicly disclosed | Not publicly disclosed | Select EHR integrations, scope not fully published | Not publicly disclosed |
| Murj | Not publicly disclosed | Not publicly disclosed | Select EHR integrations, scope not fully published | Not publicly disclosed |
| PaceMate | Not publicly disclosed | Not publicly disclosed | Select EHR integrations, scope not fully published | Not publicly disclosed |
| Octagos | Not publicly disclosed | Not publicly disclosed | Bi-directional EHR integrations noted, scope not fully published | Not publicly disclosed |
Get a side-by-side fit analysis for your OEM mix and EHR environment.
Rhythm360's HIPAA-compliant mobile application keeps electrophysiologists, NPs, and PAs connected to transmissions and care coordination from any location. On-call clinicians no longer remain tethered to a workstation to act on a critical alert. The mobile interface surfaces the same prioritized alert queue as the desktop dashboard and ensures that a ventricular fibrillation flag or ERI/RRT battery indicator reaches the responsible clinician regardless of time or location.
Rhythm360's onboarding process, including EHR integration configuration, typically completes in days to weeks depending on practice size and the number of OEM data feeds. Staff training focuses on the unified dashboard rather than multiple portal interfaces and shortens the learning curve compared with legacy multi-portal workflows. The platform architecture removes dependence on a single “super-user” and distributes operational knowledge across the care team, which improves business continuity during staff transitions.
A practice implanting devices from only one OEM and operating on a single EHR with no plans to expand its device portfolio may find that the OEM's native portal meets immediate needs. Any practice managing patients with devices from two or more manufacturers, operating across multiple clinic sites, or planning to add HF or HTN RPM service lines will encounter fragmentation and billing compliance gaps that vendor-neutral platforms address. The decision threshold usually appears when staff hours spent on portal management exceed the cost of a unified platform subscription.
Three variables determine platform fit: device population mix, EHR environment, and patient volume. Consider the spectrum. A solo EP practice with fewer than 200 monitored patients and a single OEM relationship has fundamentally different workflow needs than a 10-physician cardiology group managing 2,000 CIEDs across four manufacturers. Because Rhythm360's SaaS pricing scales with clinic size and platform usage, the same platform architecture serves both ends of that spectrum without separate product tiers. Within that range, practices already running Epic or Cerner see the fastest time-to-value, since bi-directional FHIR integration eliminates manual transcription from day one. Practices adding HF or HTN RPM service lines gain a second revenue stream through Rhythm360's integrated chronic disease management module and avoid adopting a separate platform.
The appropriate monitoring device depends on the clinical indication. Implantable loop recorders (ILRs) provide continuous long-term rhythm surveillance for unexplained syncope or cryptogenic stroke. ICDs monitor and treat life-threatening ventricular arrhythmias. Pacemakers with remote monitoring capability transmit daily device diagnostics, including arrhythmia burden and lead integrity data. Wearable patch monitors support shorter-term diagnostic needs. For practices managing patients across all of these device types, the monitoring platform, not the device itself, determines whether data from each modality reaches the clinical team in a timely, actionable format. Rhythm360 supports all major CIED categories and wearable RPM sensors for heart failure and hypertension management.
Cardiologists and electrophysiologists use a range of monitoring modalities depending on patient acuity and diagnostic goals. Implanted devices such as pacemakers, ICDs, CRT devices, and ILRs transmit data remotely through OEM networks. External monitors include Holter monitors for 24–48 hour recordings, extended wear patches for 7–30 day monitoring, and event monitors for symptom-triggered recordings. Specialized sensors such as the CardioMEMS pulmonary artery pressure monitor support advanced heart failure management. In mixed-device practices, the operational challenge lies in aggregating data from all of these devices into a single reviewable workflow, which defines the core function of a vendor-neutral platform like Rhythm360.
Epic and Cerner hold the largest market share in cardiology and integrated health system environments and provide strong support for HL7 and FHIR-based data exchange. Athenahealth and eClinicalWorks are common in independent cardiology practices. The EHR itself influences RPM program success less than the depth of integration between the EHR and the monitoring platform. Bi-directional integration, where device data populates the EHR as structured observations and patient records inform the monitoring platform, removes double documentation and helps ensure billing documentation is complete at the point of care. Rhythm360 supports bi-directional integration with all major cardiology EHR systems, including those listed earlier, and fits into existing infrastructure rather than requiring an EHR change.
The evaluation criteria for a cardiac RPM platform in 2026 are concrete: transmissibility rate, OEM coverage, EHR integration depth, AI triage capability, CPT automation, mobile access, and onboarding speed. Rhythm360 addresses each criterion with documented outcomes from high-volume academic implementations and mixed-OEM community practices. As Medicare RPM enrollment approaches one million beneficiaries and data volumes continue to grow, the operational and financial cost of fragmented, manual workflows compounds. A unified, vendor-neutral platform now represents the standard for practices managing mixed-OEM CIED and chronic cardiac populations at scale.
Contact Rhythm360 to discuss your practice's device mix, EHR, and patient volume.
