Last updated: July 14, 2026
These eight capabilities work together. Data aggregation feeds accurate billing. Accurate billing prevents denials. Denial prevention protects the revenue practices are otherwise losing every quarter.

Cardiology practices run an 11-14% initial denial rate in 2026, according to specialty benchmarks from Change Healthcare clearinghouse data. A healthy benchmark sits at 5-7%. A mid-size cardiology group can leak $150,000 to $400,000 a year to preventable denials, downcoding, and missed prior authorizations.
Fragmented data, manual documentation, and delayed authorization tracking cause most of this leakage. Automation platforms that connect directly to device data streams and EHRs address these root causes instead of fighting denials after submission. Rhythm360 clients have achieved up to 300% revenue lift through optimized CPT code capture, improved staff efficiency, and new RPM service lines for HF and HTN management.
CPT 93298 covers remote monitoring of a previously implanted CIED system, including data analysis and a signed physician report. Compliant billing requires documented receipt of the transmission, analysis of device diagnostics, and physician sign-off. These steps go wrong easily when handled manually across multiple OEM portals.
Rhythm360 automates each component. The platform ingests the transmission, generates a structured report, and routes it for physician review and signature via the mobile app or desktop dashboard. Every action gets timestamped for audit purposes. This closes the manual gaps that cause CIED transmissions to go unbilled within the 90-day cycle, one of the most common sources of lost cardiac monitoring revenue.
An 8-cardiologist group reduced its overall claim denial rate from 22% to 8.4%, a 62% reduction, using AI-powered cardiology-specific coding and automated prior authorization over 12 months. The group recovered $1.8M in annual revenue, and denial management staff saw reduced workload and faster resolution times.
Three mechanisms drove this result: pre-submission claim scrubbing that validates CPT/ICD pairing and modifier requirements, real-time prior authorization tracking that prevents auth-related denials, and automated documentation that attaches medical necessity evidence at submission. Together, these mechanisms explain why practices implementing structured denial management workflows typically see a 30-60% drop in denial rate from baseline within 90 days.
Cardiac catheterization (CPT 93458 and related codes) carries some of the highest denial risk in cardiology. The dominant denial category for cardiology claims is CO-50 (medical necessity / LCD mismatch), driven by UnitedHealthcare, Aetna, and most BCBS plans. Physicians and staff spend an average of 13 hours per week completing 39 prior authorizations per physician, and AI automation can cut that processing time substantially.
Automating prior authorization for cardiac catheterization involves four steps:
Under CMS-0057-F, effective January 1, 2026, payers must respond to standard PA requests within 7 calendar days and expedited requests within 72 hours. Rhythm360 surfaces authorization status within the clinical workflow, so staff act on payer responses without switching between portals.
As covered earlier, Rhythm360's ingestion pipeline supports every major device manufacturer through API, HL7, XML, and AI-powered PDF parsing. This section explains why that neutrality matters day to day.
Electrophysiology clinics and cardiology groups that implant devices from multiple manufacturers face a real operational cost without vendor neutrality: separate logins, separate interfaces, and manual reconciliation across disconnected systems. Rhythm360's redundant data feed architecture maintains greater than 99.9% transmissibility even when an OEM server goes down. Other platforms exist in the cardiac monitoring space, and practices should evaluate any platform against their specific multi-OEM device mix and billing requirements.
Evaluate Rhythm360's vendor-neutral device coverage against your practice's device population.
The table below pulls together the outcomes referenced throughout this article into one reference point, useful for comparing Rhythm360 against a practice's current billing performance.
| Feature | Metric | Outcome | Source |
|---|---|---|---|
| Multi-OEM CIED data ingestion | >99.9% transmissibility | No missed transmissions due to OEM server downtime | UCM/RhythmScience White Paper, 2025 |
| Critical alert response time | 80% reduction | Faster action on arrhythmias, lead malfunctions, and device alerts | UCM/RhythmScience White Paper, 2025 |
| CPT revenue capture (93298, 99454, 99457, and related codes) | Up to 300% revenue lift | Automated billing documentation recovers previously missed CIED and RPM revenue | RhythmScience platform outcomes data |
| Annual report volume (UCM deployment) | 73,000+ reports/year; 18,000+/quarter | Scalable monitoring for high-volume CIED populations without additional staffing | UCM/RhythmScience White Paper, 2025 |
| EHR integration and onboarding timeline | Days to weeks | Bi-directional integration with Epic, Cerner, Athenahealth, eClinicalWorks, and Greenway Health via HL7; no data migration required | RhythmScience platform specifications |
| Mobile access | HIPAA-compliant iOS/Android app | Same-day intervention for weekend alerts | RhythmScience platform specifications |
Cardiology practices without structured front-end billing controls commonly see first-pass denial rates between 15% and 25%. The industry benchmark for a well-managed cardiology billing operation is a denial rate under 5% and a first-pass clean claim rate above 95%. For a practice billing $1 million annually, cutting the denial rate from 12% to 4% captures roughly $80,000 in additional revenue while freeing staff from denial rework. Rhythm360 supports this by automating the documentation and eligibility tracking steps that most often cause CIED and RPM claims to get denied.
The most frequently underbilled codes are 93298 (remote CIED interrogation with physician report), 93299 (CIED remote monitoring), 99454 (device supply with transmission-day tracking), 99457 (first 20 minutes of clinical staff time with interactive communication), and 99458 (additional 20-minute increments). Practices that don't systematically track transmission days, document staff time, and generate compliant physician reports miss substantial recurring revenue. Under 2026 CMS guidelines, RPM can now be billed with as few as 2 days of device data in a 30-day period, which expands eligibility but requires updated tracking logic. Rhythm360 automates transmission-day counting, staff time documentation, and report generation for each code, so every eligible event gets captured with audit-ready documentation before submission.
Prior authorization for cardiac catheterization and related high-cost procedures has historically taken 3 to 14 days, often causing procedure rescheduling and care disruption. Beginning January 1, 2026, CMS-0057-F requires federally regulated health plans, including Medicare Advantage, Medicaid, CHIP, and Marketplace plans, to respond to standard requests within 7 calendar days and expedited requests within 72 hours. Every denial must include a specific reason, and starting March 31, 2026, payers must publicly report average turnaround times, approval rates, and denial rates. These rules create a more predictable environment, but practices still need automated tracking to monitor payer compliance and escalate delayed requests.
Rhythm360's implementation timeline runs from a few days to a few weeks, depending on the complexity of the practice's EHR environment and device population. Onboarding includes EHR integration setup via HL7 with Epic, Cerner, Athenahealth, eClinicalWorks, and Greenway Health, plus configuration of OEM data feeds for the practice's device manufacturers. No data migration is required. SaaS-based pricing scales with clinic size and usage, eliminating large upfront setup fees. The centralized dashboard reduces reliance on a single "super-user" for daily operations. Practices report measurable billing and workflow improvements within the first quarter of deployment.
Discuss implementation timelines with our team to plan your practice's rollout.


