Last updated: July 14, 2026
Practice administrators evaluating cardiology RPM software in 2026 focus on one outcome: stopping revenue leakage from missed or denied claims. A September 2024 OIG review found that roughly 43% of RPM enrollees did not receive all three required service components, so nearly half of enrolled patients generated incomplete claims. Three criteria determine whether a platform closes that gap.
Rhythm360 is built around all three criteria. See how Rhythm360 meets all three criteria in your environment.
The 16-day transmission threshold drives most 99454 denials, so cardiology practices need a clear tracking process. The following checklist reflects 2026 CMS requirements.
The CMS CY 2026 Physician Fee Schedule Final Rule sets the following national non-facility average payment rates.
| CPT Code | Service Description | 2026 National Non-Facility Rate |
|---|---|---|
| 99453 | Initial device setup and patient education (once per episode) | ~$21.71 |
| 99445 (new 2026) | Device supply and transmission, 2–15 days per 30-day period | ~$47 |
| 99454 | Device supply and transmission, 16–30 days per 30-day period | ~$47.43 |
| 99457 | RPM treatment management, first 20 minutes per calendar month | ~$51.77 |
| 99458 | Each additional 20 minutes of RPM treatment management (add-on to 99457) | ~$41.42 |
| 99470 (new 2026) | RPM treatment management, first 10 minutes per calendar month | ~$26 |
| 93298 | Technical component, ILR/ICM remote interrogation (2–15 day window) | Billed per qualifying 90-day cycle; 2026 rule reduced minimum monitoring window |
CMS finalized a conversion factor of $33.57 for qualifying APM participants and $33.40 for non-qualifying APM participants, representing an increase of more than 3% over 2025 rates. A continuously managed RPM patient generates revenue from 99453/99454/99457/99458 before stacking with CIED monitoring codes 93297/93298.
RPM services (CPT 99453–99458) and RTM services (CPT 98975–98981) cannot be billed together for the same patient in the same period. Several additional same-period restrictions apply in 2026.
A unified integration layer resolves the multi-vendor CIED problem by normalizing data into a single triage queue and routing events into the billing engine with the correct CPT pairings already applied, while tracking rolling 30-day transmission windows to prevent 99454 denials. Rhythm360 authenticates with Medtronic CareLink, Abbott Merlin.net, Boston Scientific Latitude, and Biotronik Home Monitoring, normalizing every transmission into one dashboard. Its redundant data feed architecture and AI-powered gap-filling deliver greater than 99.9% transmissibility, which helps maintain the 16-day threshold even when an OEM server experiences downtime.
Automated timestamping of clinical activities to the calendar month is essential for capturing 99457 and 99458. Manual processes in isolated CIED portals miss this requirement and produce audit-fragile claims. Other platforms exist in the market, and practices should evaluate any option against all three criteria defined above before committing.
To illustrate how multi-OEM integration and automated tracking work in practice, consider a typical heart failure patient enrolled in Rhythm360’s RPM service line. This workflow shows how the platform captures every billable code from initial setup through ongoing management.
A heart failure patient enrolled in Rhythm360’s RPM service line transmits daily weight, blood pressure, and SpO2 readings from FDA-cleared cellular devices. The platform ingests each transmission automatically, increments the patient’s rolling 30-day transmission counter, and flags readings outside clinician-defined thresholds for triage. When a patient’s weight increases by three pounds in 24 hours, an alert surfaces in the centralized dashboard with a priority score, allowing clinical staff to initiate a care call without logging into a separate portal.
At month-end, Rhythm360 generates the following documentation and CPT capture for a fully engaged heart failure patient.
When a CIED patient’s device transmits a scheduled or event-triggered interrogation, Rhythm360 ingests the report via API, HL7, XML, or PDF parsing through computer vision, normalizes the data, and routes it to the appropriate clinician queue. The platform tracks each patient’s 90-day billing cycle for implantable loop recorder interrogations and surfaces a billing-ready event when the cycle closes. A certified cardiac technician (CCT) reviews the transmission, documents device function, programmed parameters, and any actionable findings, and signs the interpretation note, all within the platform.
CPT codes captured and documentation generated for a CIED remote interrogation episode include the following.
| Capability | Rhythm360 Process | Outcome |
|---|---|---|
| 16-day transmission tracking | Rolling 30-day counter per patient across all connected devices, with a day-10 alert that triggers outreach if the threshold is at risk and 99445 auto-selected when the count falls below 16 | Reduces 99454 denials from threshold misses and captures 99445 revenue previously forfeited |
| Clinical-time logging | Every alert review, trend analysis, and patient outreach is timestamped to the calendar month. 99457 triggers at the 20-minute mark, and 99458 units increment automatically. | Automated workflows improve 99457 capture rates compared to manual logs |
| 90-day CIED billing cycle management | The platform tracks each patient’s 93294/93295/93298 cycle across all OEM portals and surfaces a billing-ready event automatically at cycle close. | Automated 90-day cycle tracking helps capture additional revenue from CIED monitoring |
| Revenue lift | Automated CPT stacking across RPM and CIED codes, with EHR-integrated audit documentation generated at the point of care | Large increase in captured revenue for practices transitioning from manual CPT capture across RPM and CIED service lines |
At 7:14 a.m. on a Saturday, a 68-year-old ICD patient’s device transmits a high-density ventricular tachycardia episode. Rhythm360’s AI-powered alert triage assigns the event a critical priority score and pushes a notification to the on-call electrophysiologist’s HIPAA-compliant mobile app. The EP reviews the transmission, the patient’s medication list, and the device’s programmed therapy zones in the same platform, without logging into a separate OEM portal.
By 9:30 a.m., the EP has initiated anticoagulation and scheduled a same-day device-reprogramming appointment. The platform logs the EP’s review time, the outreach call, and the clinical decision to the patient’s record. That interaction satisfies the synchronous-communication requirement for 99457, and the timestamped review time contributes toward a second unit of 99458 for the month. The interpretation note for 93295 is auto-populated and routed to the EHR. Without a unified platform, the Saturday transmission might have remained unreviewed until Monday, which increases stroke risk for a patient in sustained VT.
Bi-directional EHR integration converts Rhythm360’s timestamped activity logs into auditable 99457/99458 documentation. The following HL7 fields must be present in every integrated record.
Rhythm360 integrates bi-directionally with Epic, Cerner, Athenahealth, eClinicalWorks, Greenway Health, and other systems via HL7, with implementation typically completed in days to a few weeks.
Rhythm360 clients have documented two headline outcomes. Critical-alert response times are reduced by up to 80%, driven by AI-powered triage that filters nonactionable transmissions and surfaces clinically significant events to the right clinician immediately. The University of Chicago Medicine’s implementation of Rhythm360 enabled clinicians to review more transmissions daily and identify more abnormalities, managing over 73,000 reports annually with stable dismissal rates. As noted following implementation, “We have improved billing and accountability for our patients after the integration.”
On the revenue side, a cardiology practice with a 500-patient RPM panel using automated workflows typically sees $300,000 to $500,000 per year in incremental captured revenue from closing 99457 gaps, adding 99458 units, eliminating 99454 denials, and capturing the 93296 RVU increase. Practices that move from manual processes to automated CPT capture across RPM and CIED service lines can achieve substantial revenue increases. Calculate your practice’s potential revenue lift with our ROI estimator.
The following criteria help administrators determine whether Rhythm360 fits their current environment.
| Practice Profile | Key Challenge | Rhythm360 Fit |
|---|---|---|
| Multi-OEM CIED panel (2+ manufacturers) | Staff logging into separate CareLink, Merlin.net, Latitude, and Biotronik portals daily | Single dashboard ingests all OEM data streams and removes redundant logins |
| HF/HTN RPM program, 50–500 patients | Manual 16-day tracking causing 99454 denials and missed 99458 units | Automated transmission counter and clinical-time logger, with 99445 fallback for sub-16-day months |
| High-volume EP clinic (500+ CIED patients) | 90-day 93298 cycles tracked manually across a mixed-vendor panel | Automated 90-day cycle management with a billing-ready event surfaced at cycle close |
| Practice without EHR-integrated RPM documentation | Audit-fragile claims and time logs reconstructed at month-end | Bi-directional HL7 integration with Epic, Cerner, Athenahealth, and others, with auto-populated interpretation notes |
| Solo practitioner or small group adding an RPM service line | No existing infrastructure for device onboarding, patient education, or billing documentation | Turnkey HF/HTN RPM service line with onboarding checklists and SaaS pricing that scales with patient volume |
The 2026 CMS Physician Fee Schedule Final Rule introduced two new RPM codes that change how practices bill for partial-month monitoring. CPT 99445 covers device supply and data transmission for 2–15 days at approximately the same rate as 99454, closing the prior all-or-nothing gap when patients fall short of the 16-day threshold. CPT 99470 covers the first 10–19 minutes of RPM treatment management with at least one synchronous patient interaction, allowing billing for months when clinical time does not reach the 20-minute threshold required for 99457.
The two new codes are mutually exclusive with their counterparts. 99445 and 99454 cannot both be billed in the same 30-day period, and 99470 and 99457 cannot both be billed in the same calendar month. Payment rates for the established codes increased modestly, with 99457 rising approximately 8.2% and 99458 rising approximately 7.7% over 2025 rates. The technical component for pacemaker and ICD remote monitoring under CPT 93296 saw its RVU increase approximately 60% on January 1, 2026, from 0.60 to 0.95, which makes automated 90-day cycle tracking more financially significant than in prior years.
The OIG announced a formal audit of Medicare Part B RPM billing in December 2024, with Medicare and Medicare Advantage RPM payments totaling $536 million in 2024. The most common denial triggers include billing 99454 without 16 documented transmission days in the preceding 30-day window, billing 99457 without at least 20 cumulative documented minutes of clinical-staff time, billing 99458 without a corresponding 99457 in the same calendar month, and billing 99457 or 99458 without a documented synchronous patient interaction. Asynchronous text messages do not satisfy the interactive communication requirement.
Additional red flags include double-counting RPM time with CCM or other care management services, billing 99453 more than once per episode without a documented new episode, and using non-FDA-cleared consumer devices as the basis for device-supply claims. Practices should conduct regular self-audits of randomized RPM claims and maintain a digital audit binder containing policies, vendor contracts, FDA device documents, patient consents, and annotated sample claims.
When a practice manages patients with devices from multiple manufacturers, each OEM portal operates independently with its own data architecture and export format. Staff must manually reconstruct transmission logs at month-end to verify the 16-day threshold for 99454 and track 90-day billing cycles for 93298. This manual process consistently undercounts billable events.
A unified integration layer that authenticates with all major OEM portals normalizes transmissions into a single queue, enforces the 16-day threshold in real time, and pairs each remote interrogation event with its correct 90-day billing cycle automatically. The result is that 99454 denials from threshold misses fall, 93298 cycles close without gaps, and clinical-staff time spent across multiple portals is consolidated into a single timestamped log that satisfies 99457/99458 documentation requirements without double-counting.
CIED remote monitoring typically bills under the cardiac-specific codes 93294–93298 rather than the general RPM codes 99453–99458. For patients who also have chronic conditions such as heart failure or hypertension monitored with separate FDA-cleared devices like weight scales, blood pressure cuffs, or pulse oximeters, the RPM codes 99453–99458 may be stacked with CIED codes when the services are distinct and documentation supports both.
A complex cardiac patient on an ICD and an RPM cuff can generate substantial monthly revenue when 99454, 99457, two units of 99458, and 93297/93298 are correctly stacked. Practices must ensure that clinical-staff time is not double-counted across the two service lines and that each claim is tied to a specific monitored condition with a corresponding ICD-10-CM code.
Rhythm360 produces four categories of audit-ready documentation for every 99457/99458 claim. First, a timestamped activity log records every alert review, trend analysis, and patient outreach event to the calendar month, with start and stop times for each activity. Second, a synchronous-interaction record captures the date, time, modality, and duration of every qualifying patient or caregiver contact.
Third, a cumulative monthly time summary is auto-calculated and surfaced for billing review before claim submission. Fourth, a clinician attestation note, pre-populated with device type, manufacturer, monitored condition, ICD-10-CM code, and actionable findings, is routed to the EHR via bi-directional HL7 integration and stored as a discrete, searchable record. All four artifacts are generated within the platform at the point of care, which removes the month-end reconstruction that produces audit-fragile claims.
Revenue leakage in cardiology RPM programs has a consistent source: fragmented OEM portals, manual 16-day tracking, and incomplete clinical-time documentation that leaves 99453, 99454, 99457, 99458, and 93298 claims either unfiled or denied. The 2026 CMS Physician Fee Schedule introduced new codes and higher rates that increase the financial stakes of accurate billing, while the OIG’s active audit program raises the cost of noncompliance.
Rhythm360 addresses all three root causes with automated 16-day transmission tracking, vendor-neutral CIED integration across Medtronic, Boston Scientific, Abbott, and Biotronik, and bi-directional EHR connectivity that produces auditable documentation at the point of care. The platform’s AI-powered alert triage and automated CPT capture mechanics deliver the response-time and revenue improvements documented above for practices transitioning from manual workflows. Request a personalized implementation roadmap for your RPM and CIED programs.
