Cardiology Billing
Maximize your reimbursements with cardiology-specialized billing. We handle 2026 CPT updates, complex catheterization coding, global periods, and insurer denials to optimize your revenue.
Billing in cardiology is one of the most technically demanding specialties and has one of the highest rates of claim denials in the healthcare revenue cycle. With a claim denial rate that reached 11.8% across the sector in 2024, and cardiology consistently exceeding that average, the margin for error is minimal. The selection of catheterization codes, the thoroughness of echocardiography, the overall time frame for device procedures, and the grouping of NCCI codes generate recurring errors that, collectively, translate into significant revenue losses: between 5% and 8% of a typical cardiology practice's annual revenue, or between $250,000 and $400,000 annually on approximately $5 million in revenue.
By 2026, cardiology practices will face a radical shift in coding and reimbursement. The 2026 CPT update introduced a total of 418 changes: 288 new codes, 84 deletions, and 46 revisions, including significant modifications to the reporting of percutaneous coronary interventions (PCI), a complete redesign of the lower extremity revascularization (LER) codes (46 new codes replacing six), and new codes for coronary plaque assessment. Regarding reimbursement, CMS finalized a 2026 conversion factor of $33.40 (a 3.26% increase) for non-qualified APM participants and $33.56 (a 3.77% increase) for qualified practitioners (QPs), but offset this with a -2.5% efficiency adjustment to the relative value units (RVUs) of work and an approximately 10% reduction for hospital-based cardiology services due to the reallocation of practice overhead costs.
At MedMaxbill, Inc., we offer comprehensive cardiology billing services designed to address these 2026 complexities. Our certified cardiology coders understand the specific revenue cycle requirements of cardiovascular practices, from new PCI codes and territorial LER coding to echocardiography comprehensiveness and 90-day global period compliance, ensuring your practice captures every dollar earned while maintaining full regulatory compliance.
The 2026 Cardiology Billing Landscape: Critical Updates
1. Major Revision of CPT Codes
The 2026 CPT update represents one of the most significant changes in recent years for cardiology practice:
Changes in PCI: Two new complex PCI codes were introduced: 92930 for two or more distinct coronary lesions or bifurcation lesions, and 92945 for revascularization of chronic total occlusion using combined antegrade and retrograde approaches. Six PCI codes were removed (92921, 92925, 92929, 92934, 92938, 92944), and the main codes were revised to include "branch(s)."
Complete redesign of the LER: Six codes (37220-37235) were removed and replaced with 46 new codes (37254-37299), organized by vascular territory (iliac, femoral/popliteal, tibial/peroneal, inframalleolar) and classified as simple (stenosis) or complex (occlusion).
Coronary plaque assessment: The new Category I code, 75577, replaces the removed Category III codes, 0623T-0626T, for coronary plaque assessment.
Endovascular repair of the thoracic aorta: Code selection is now based on the most proximal extent of aortic coverage, with imaging and catheterization included in the primary procedures.
2. Changes to the Medicare Fee Schedule and Payments
CMS finalized the 2026 Medicare physician fee schedule conversion factor at $33.4009** for most physicians and $33.5675** for eligible APM participants. However, some key provisions significantly impact cardiology:
Efficiency Adjustment (-2.5%): A new productivity adjustment reduces work relative value units (RVUs) for nearly all non-time-based codes, affecting catheterization, echocardiography, and other diagnostic services.
Pay Differential by Service Delivery Site: The practice overhead allocation for services performed in hospital settings is reduced by 50%, resulting in an overall reduction of approximately 10% in RVUs for pacemaker implants, TAVR, PCI, and ablation performed in hospital settings.
Left Atrial Appendage Occlusion (LAAO) Reduction: A nearly 27% reduction in the relative working value (RVU) for left atrial appendage occlusion (code 33340) was finalized, from 14.00 to 10.25.
Remote Physiological Monitoring: New codes were created and existing ones revised, maintaining values above the lower RUC recommendations due to insufficient survey response.
3. Ambulatory Specialty Model (ASM) for Cardiology
CMS finalized a mandatory five-year ASM for cardiologists in select metropolitan areas, making them financially responsible for the management of chronic conditions, including heart failure. Participants will enter into risk-sharing agreements with payment adjustments of -9% to +9% on Medicare Part B reimbursements beginning in the first year of payment.
The Most Costly Cardiology Billing Errors
1. Errors in Cardiac Catheterization Code Selection
Diagnostic catheterization codes (93452–93461) are determined by the combination of components performed (right heart catheterization, left heart catheterization, coronary angiography, and bypass graft angiography), not by criteria at the time of billing. Percutaneous coronary intervention codes (92920–92943) are based on the type of intervention and vessel involved. Billing an intervention code when the documentation only supports a diagnostic procedure (or vice versa) triggers increased scrutiny from recovery auditors.
2. Incomplete Echocardiography
CPT code 93306 requires documentation of all four components: 2D imaging, M-mode recording, spectral Doppler, and color Doppler. Reports lacking explicit confirmation of both Doppler components are systematically reclassified as 93307, resulting in a 20–30% reduction in reimbursement per claim. For a clinic performing several hundred echocardiograms annually, this gap translates into a significant loss of revenue.
3. Confusion Regarding the Global Period
A common misconception is that all interventional procedures have a 90-day global period. Most PCI procedures (92920–92943) have a 0-day global period under Medicare, meaning that post-procedure visits are billed separately. The 90-day global period applies to procedures involving cardiac devices: pacemaker implants (33206, 33207, 33208), ICD implants, and CRT devices. During this 90-day period, two modifiers govern separately billable services: modifier 24 for unrelated evaluation and management (E/M) services (with a different diagnosis) and modifier 57 for evaluation and management decisions made on the day of the procedure or the day before. Failure to apply modifier 24 to legitimate unrelated visits results in revenue that is not delayed or reduced, but simply lost.
4. Errors in the Technical vs. Professional Component
Hospital cardiologists must apply modifier -26 (professional component) when interpreting studies performed on hospital-owned equipment, while centers that own their own equipment bill globally. Applying -26 when entitled to the global rate results in systematic underpayment, which is exacerbated by a high volume of diagnostic claims.
5. NCCI Procedure Grouping and Misuse of Modifier 59
NCCI standards group many pairs of cardiology procedures performed together. When two codes are grouped, the lower-value code cannot be paid separately unless Modifier 59 (or more specific X modifiers: XE, XS, XP, XU) demonstrates that the services were genuinely distinct. Applying Modifier 59 without supporting documentation is the practice that triggers post-payment audits. NCCI standards are updated quarterly; the applicability of modifiers should be confirmed with the current standards, rather than assumed based on past practice.
6. Prior Authorization Failures
Pre-authorization denials account for more than 40% of lost revenue in cardiology. Cardiac catheterization, myocardial perfusion scintigraphy, echocardiography (depends on the insurer), electrophysiological studies, and implantable devices require prior authorization from most commercial insurers.
Our Comprehensive Cardiology Billing Services
Support for the Transition to CPT 2026 Codes
Our certified cardiology coders ensure that all claims use the updated 2026 codes, including:
New PCI codes 92930 and 92945 with correct lesion complexity and approach classification.
46 new LER codes (37254-37299) with correct vascular territory and simple/complex classification.
Coronary plaque assessment code 75577, replacing the discontinued Category III codes.
Thoracic aortic endovascular repair codes with correct selection of proximal coverage extent.
Accuracy of catheterization codes.
We verify that each diagnostic catheterization claim selects the correct code (93452–93461) based on the documented combination of components: right heart, left heart, coronary angiography, and bypass graft angiography. For interventional PCI, we ensure that the selection of codes 92920–92943 matches the intervention type and vessel documented in the procedure note.
Echocardiography Integrity Validation
Our coders verify that each echocardiography claim includes explicit documentation of the four components required for CPT code 93306: 2D imaging, M-mode recording, spectral Doppler, and color Doppler. Reports lacking any component are correctly billed as 93307 or 93308, thus avoiding the 20–30% reimbursement reductions and undercoding that result from overbilling.
Global Period Management
We track each 90-day global period for device procedures (33206, 33207, 33208, ICD implants, CRT devices) and ensure that modifier 24 is applied to unrelated assessment and management (A/M) services (with different diagnoses) and modifier 57 to A/M consultations for decision-making on the day before or the day of the procedure. For PCI procedures with 0-day global periods, we ensure that post-procedure consultations are billed separately without modifiers.
Compliance with Technical and Professional Components
We verify the correct application of modifiers for each diagnostic claim: modifier -26 for the interpretation of the professional component when the facility owns the equipment, modifier -TC when only the technical component is billed, and a single bill when the facility owns the equipment and performs both components.
Compliance with NCCI Editions and Modifier 59
Our pre-submission review verifies all NCCI editions and ensures that Modifier 59 (or Modifiers XE, XS, XP, XU) is applied only when the documentation supports genuinely distinct services. We confirm the applicability of the modifiers using the current NCCI quarterly updates, rather than relying on past practices.
Prior Authorization Management
We manage prior authorizations for high-risk cardiology procedures: cardiac catheterization, myocardial perfusion scintigraphy, echocardiography (depending on the insurer), electrophysiological studies, and implantable cardiac devices. We provide specific follow-up for each insurer to prevent authorization denials, which account for over 40% of lost revenue in cardiology.
Denial and Appeal Management
Each denied claim is reviewed and appealed with supporting documentation, including verification of catheterization components, complete echocardiogram records, documentation for the entire period, and prior authorization records. We analyze denial trends by payer and procedure to implement preventative strategies.
Accounts Receivable Monitoring and Recovery
Our accounts receivable specialists proactively monitor outstanding balances, maintaining days sales outstanding (DSO) below 35 days, correct claim rates above 97%, denial rates below 5%, and non-compliance rates above 95%.
Why MedMaxbill for Cardiology Billing?
Specialized Cardiology Expertise:
Our AAPC-certified coders work exclusively with cardiology cases, mastering the diagnostic (93000-93799) and interventional (92920-92998) CPT code families, global period distinctions, and NCCI editing standards compliance—aspects often overlooked by generic billing companies.
2026 Compliance Ready:
We stay current with changes to CPT 418 codes, the new PCI codes (92930, 92945), the 46 new LER codes (37254-37299), the 2026 conversion factor ($33.4009/$33.5675), the -2.5% efficiency adjustment, and ASM requirements.
Proactive Denial Prevention:
By identifying errors in catheterization codes, deficiencies in echocardiogram integrity, global period violations, and failures in pre-authorization before claims submission, we reduce denial rates from 14-18% to less than 5%.
Revenue Protection:
Our systematic approach prevents an annual revenue loss of 5-8% (between $250,000 and $400,000 on $5 million in collections) due to recurring coding errors and underpayments.
Audit Defense:
Our pre-submission documentation reviews help you maintain audit-ready records and reduce your exposure to audits by RAC, OIG, and commercial insurers.
Dedicated Support:
You will have access to a dedicated account manager who understands your practice and is available to answer questions and provide updates.
Partner with MedMaxbill for Cardiology Billing Success
Billing in cardiology demands a specialized approach. With changes to CPT 418 in 2026, new PCI and LER codes, payment differences based on care setting, the -2.5% efficiency adjustment, and increasing scrutiny from insurers, generalist billing companies often lose significant revenue and expose clinics to the risk of regulatory noncompliance.
At MedMaxbill, we combine industry expertise, advanced technology, and continuous monitoring to ensure your cardiology practice maximizes revenue and remains compliant with all regulations in 2026 and beyond.
Partner with MedMaxbill, Inc. and enjoy the peace of mind that comes with expert cardiology billing services. Let us handle the complexities of billing so you can focus on what matters most: providing exceptional cardiac care.
