AnnexMedAnnexMedAnnexMed
Corporate Office
USA
299 S. Main Street
Suite 1300
Salt Lake City, UT 84111
Chennai - Tower I
CeeDeeYes Tyche Towers,
Block-1 3rd Floor, Perungudi Bypass Rd, Perungudi,
Chennai - 600096
Chennai - Tower II
4th Floor, IIFL TOWERS
MGR Main Rd,
Perungudi, Chennai - 600096
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No 9, Viswalingam Layout
Villupuram,
Tamil Nadu – 605602

Cardiovascular Surgery Revenue Cycle Management

Specialized RCM for High-Value Cardiovascular Surgical Programs

End-to-end revenue cycle management for CABG, valve replacement, TAVR, vascular surgery, and complex cardiothoracic procedures — protecting high-dollar claims through precision coding, documentation validation, global period tracking, and payer-specific denial prevention

96%+

Clean Claim Rate on Surgical Cases

25–35%

Reduction in
A/R Days

82–90%

Denial Overturn
Rate

18–28%

Average Collections
Increase

20+ Yrs

Healthcare RCM
Experience

Why cardiovascular surgery billing demands specialized expertise?

Cardiovascular surgery represents one of the highest-risk, highest-value billing segments in healthcare. Procedures such as CABG (33510–33536), valve replacement (33400–33478), TAVR (33361–33366), and vascular surgery (35001–37799) generate claims ranging from $20,000 to $100,000+ per case — yet they are consistently exposed to denial, underpayment, and audit risk due to the precision required across coding, documentation, and payer compliance.
Unlike outpatient billing, cardiovascular surgery operates within a complex episode model: pre-operative authorization, surgical procedure coding, assistant and co-surgeon billing, global period tracking, implantable device reimbursement, and post-operative care separation all contribute to whether a high-value claim is paid, partially paid, or denied. A single documentation gap can result in $5,000–$50,000 in lost revenue per case.
AnnexMed delivers end-to-end cardiovascular surgery RCM built for this complexity. Our AAPC and AHIMA certified coders specialize exclusively in cardiac and cardiothoracic surgical programs — from CABG and valve procedures to TAVR and vascular interventions. We manage the full revenue cycle: pre-authorization through surgical coding, global period management, device billing, denial resolution, and financial reporting — protecting the integrity of every high-value claim your program generates.
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Trusted by 100+ healthcare providers | AAPC, AHIMA & AAHAM Certified | SOC 2 Type II

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Billing complexity

Why cardiovascular surgery billing is uniquely complex?

Cardiovascular surgery reimbursement carries financial risk at every stage. Each of the following challenges — if not managed with specialized expertise — results in denied claims, underpayments, or audit exposure on high-value surgical cases.

Procedure Complexity & CPT Selection

Multi-component surgeries requiring precise CPT code selection with add-on codes, vessel counts, graft types, laterality modifiers, and correct sequencing across CABG, valve, and vascular procedures.

Bundling & Unbundling Rules

NCCI edits affecting coronary artery bypass, valve repairs, and concurrent vascular procedures — requiring expert modifier application (51, 59, XS, XU) to prevent inappropriate claim bundling.

High-Value Implantable Device Billing

Separate billing for pacemakers, ICDs, stents, valves, and vascular grafts using precise HCPCS codes, serial number tracking, and Medicare C-code compliance for cost pass-through reimbursement.

Assistant & Co-Surgeon Documentation

Complex billing for assistant surgeons and co-surgeons requiring specific modifiers (80, 81, 82, AS, 62) along with operative documentation confirming medical necessity and physician participation.

Global Period Management (90-Day)

Tracking 90-day global surgical periods, correctly billing complications and unrelated services with modifiers 24, 25, 57, 79 — and managing staged procedures to prevent revenue loss inside the global window.

Split/Shared Visit Compliance

Hospital-based billing with proper documentation of split/shared E&M services between attending surgeons and hospitalists — meeting CMS substantive portion requirements under current split/shared rules.

High-Dollar Claim Audit Exposure

Surgical cases with reimbursements exceeding $50,000 require documentation capable of withstanding payer audits, RAC reviews, and pre-payment reviews — demanding a compliance-first billing approach.

Prior Authorization for Complex Cases

Managing prior authorization for high-cost cardiac procedures including TAVR, complex bypass, and hybrid surgeries — with submission, follow-up, peer-to-peer coordination, and appeals management.

RCM modules

Cardiovascular surgery RCM modules

Our cardiovascular surgery billing platform is built around the specific coding, documentation, and compliance requirements of cardiac and cardiothoracic surgical programs — covering every revenue touchpoint from pre-authorization through final reimbursement

Cardiac Surgery CPT Coding

Precise code selection for CABG (33510–33536), valve procedures (33400–33478), aortic surgery (33860–33877), and hybrid procedures — based on operative technique, vessel count, and graft type.

TAVR & Structural Heart Billing

Specialized coding for transcatheter aortic valve replacement (33361–33366), MitraClip, and structural heart interventions with proper access approach and add-on code application.

Vascular Surgery Coding

End-to-end coding for open and endovascular vascular procedures (35001–37799) including AAA repair, carotid endarterectomy, peripheral bypass, and endovascular stenting with appropriate modifiers.

Global Period Tracking & Management

Systematic 90-day global period tracking per surgical case — identifying billable complications, unrelated services, and staged procedures outside the global window using modifiers 24, 57, 79.

Assistant & Co-Surgeon Billing

Modifier management for assistant (80, 81, 82, AS) and co-surgeon (62) billing — with documentation review confirming operative note requirements and payer-specific assistant surgeon policies.

Implantable Device Billing

Complete device billing cycle for pacemakers, ICDs, CRT devices, and cardiac monitors — including implant coding (33206–33249), interrogation visits (93288–93289), and device registry compliance.

Bundling & NCCI Compliance

All insurance and patient payments are posted accurately and reconciled daily against expected reimbursements, ensuring your books are always clean and audit-ready.

Pre/Post-Operative Visit Billing

Capture of pre-op consults by separate physicians (modifier 57) and post-op visits for unrelated conditions (modifiers 24, 79) — recovering revenue commonly left uncaptured within global surgical periods.

Prior Authorization Management

Full authorization lifecycle for high-value cardiac procedures: submission, payer follow-up, peer-to-peer coordination, clinical summary preparation, and appeals management for denied authorizations.

ICD-10 & Documentation Validation

Precise ICD-10 coding for CAD (I25.x), aortic stenosis (I35.0), mitral insufficiency (I34.0), and complex comorbidities — validated against operative documentation to ensure medical necessity compliance.

Inpatient & Outpatient Place of Service

Setting-specific billing for inpatient hospital, outpatient hospital, and ASC — with correct place of service codes, facility vs. professional fee separation, and site-specific reimbursement optimization.

Conversion Factor & Contract Optimization

Payer contract monitoring for RVU-based reimbursement on high-value surgical procedures — identifying underpayment patterns and ensuring correct conversion factor application across all payer categories.

Core RCM services

Core RCM services for cardiovascular surgery

The following nine services form the foundation of AnnexMed’s standard RCM offering — each customized to the cardiovascular surgery billing environment, payer mix, and documentation standards of your program.

Eligibility & Benefits Verification

We verify patient insurance coverage, deductibles, in/out-of-network status, and cardiac surgery-specific benefit structures before every case — eliminating claim rejections from coverage gaps on high-value procedures.

Prior Authorization Management

Our team manages the full authorization lifecycle for complex cardiac surgeries: submission, payer follow-up, peer-to-peer coordination, and appeals — ensuring procedures are approved before scheduling.

Claims Submission & Tracking

We submit clean claims electronically to all payers and monitor each claim through its entire lifecycle, proactively catching surgical coding errors and modifier issues before they result in rejections.

Denial Management & Appeals

Every denied cardiovascular surgery claim is reviewed, root-cause analyzed, and appealed with complete clinical documentation — targeting the 82–90% overturn rate we achieve across cardiac surgical programs.

Accounts Receivable Follow-Up

Our AR specialists proactively follow up on outstanding surgical balances with payers, prioritizing high-value claims and accelerating collections to keep days in AR below industry benchmarks.

Patient Statements & Collections

We manage the complete patient billing experience for cardiac surgery patients — from clear post-surgical statements to respectful collections follow-up — improving recovery while preserving patient relationships.

Payment Posting & Reconciliation

All insurance and patient payments are posted accurately and reconciled daily against expected surgical reimbursements — ensuring your books are always clean, accurate, and audit-ready.

Provider Credentialing

We manage cardiovascular surgeon enrollment and credentialing with all commercial, Medicare, and Medicaid payers — keeping contracts active and preventing claim delays from expired or missing credentials.

Reporting & Analytics Dashboard

You receive real-time RCM performance dashboards covering collections, denial rates, AR aging, procedure-level revenue, and payer-specific surgical trends — giving your program the data to make informed decisions.
Billing reference

Cardiovascular surgery billing highlights

Key coding and documentation requirements across major cardiovascular surgical procedure categories managed by AnnexMed.
Procedure Category
CPT Range
Payment Rate
Global Period
Documentation Required
CABG — Arterial

33533–33536

Vessels bypassed, graft type, cardiopulmonary bypass use

90 Days

Operative report, graft harvest documentation

CABG — Venous/
Combined

33510–33536

Venous vs arterial graft type,
add -on codes per vessel

90 Days

Complete operative note with vessel count

Valve Repair/
Replacement

33400–33478

Approach, valve type (mechanical vs biological), reoperation

90 Days

Valve selection documentation, implant record

TAVR

33361–33366

Access approach (transfemoral
vs transapical), add-ons

90 Days

Imaging, heart team documentation, implant record

Aortic Surgery

33860–33877

Extent of repair, CPB use,
circulatory arrest

90 Days

Operative note with anatomical extent detail

Pacemaker /
ICD Implant

33206–33249

Device type, lead count,
generator replacement vs new

10 Days

Device serial number, implant card, operative note

Vascular — Open

35001–35671

Vessel, procedure type (bypass
vs repair), laterality

90 Days

Operative report with vessel involvement detail

Vascular —
Endovascular

34800–37799

Vessel, stent type, diagnostic
vs interventional component

0 Days

Operative report with vessel involvement detail

Expected outcomes

What cardiovascular surgery programs achieve with AnnexMed?

When anesthesia billing is managed with the right expertise, the financial impact is immediate and measurable. These are the results anesthesia practices achieve working with AnnexMed

18–28%

Increase in Collections

96%+

Clean Claim Rate

25–35%

Reduction in A/R Days

82–90%

Denial Overturn Rate

95%+

Device Billing Accuracy

100%

Staff Overhead Eliminated

Why cardiovascular surgery programs Choose AnnexMed?

Cardiovascular Surgery Billing Expertise

Our certified coders specialize exclusively in cardiac and cardiothoracic surgical programs — with deep expertise in CABG, valve, TAVR, and vascular procedure coding that general RCM firms cannot match.

High-Value Claim Protection

We apply extra scrutiny to surgical claims exceeding $20,000 — ensuring complete documentation, correct modifier usage, and audit-ready compliance on every high-dollar cardiovascular case.

Surgical Document Validation

Our team reviews operative reports, anesthesia notes, and implant records before claim submission — identifying documentation gaps that would otherwise trigger denials or audit flags on complex procedures.

Global Period Revenue Capture

Global Period Revenue CaptureWe systematically track 90-day global periods for all cardiovascular procedures — identifying and billing every legitimate revenue opportunity outside the global package to maximize program collections.

Device & Implant Billing Specialization

Implantable device billing requires specialized knowledge of HCPCS codes, serial number requirements, and cost-pass-through rules. Our platform manages every device from implant through interrogation visit reimbursement.

Compliance-First, Audit-Ready Approach

We maintain strict HIPAA compliance, monitor NCCI quarterly updates, and maintain current CMS cardiovascular surgery guidelines — ensuring your program is protected from payer audits and RAC reviews at all times.

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Evaluate Your Cardiovascular Surgery Revenue

Identify Revenue Gaps. Protect High-Value Claims. Strengthen Your Surgical Program.

Frequently Asked Questions

Most cardiovascular surgery practices are fully operational within 3-4 weeks. We handle credentialing verification, system integration, operative report review processes, and historical data transfer with minimal disruption.
We integrate with all major hospital and practice-based EHR platforms. Our team has extensive experience with Epic, Cerner, Meditech, Allscripts, and specialty cardiovascular surgery documentation systems.
Yes, device management is one of our core competencies. We track all implantable devices, maintain serial number databases, ensure proper HCPCS code billing, and manage device registries with complete accuracy and compliance.
Our team monitors quarterly NCCI updates, subscribes to CMS policy changes, participates in cardiovascular surgery coding webinars, and maintains relationships with major payers to stay ahead of bundling policy changes.
We maintain an 82–90% overturn rate on appealed cardiovascular surgery claims through expert documentation review, modifier justification, and payer-specific appeal strategies with strong clinical validation
Absolutely. We'll conduct an A/R audit focusing on high-dollar surgical claims, identify collectible balances, develop a recovery strategy, and work outstanding claims while starting fresh with new procedures.
Yes, we manage both professional fee billing for surgeons and facility billing scenarios, understanding split/shared visits, global fee arrangements, and hospital-based billing requirements with deep specialty expertise
You'll have 24/7 access to our secure portal with real-time dashboards showing claims status, payments, denials, device reimbursement tracking, A/R aging, case mix analysis, and detailed financial analytics.
We coordinate all peer-to-peer reviews, prepare clinical summaries and supporting documentation, schedule calls with your surgeons, and manage the entire review process with communication, timely follow-ups, and preparation.
Yes, our system tracks 90-day global periods for all cardiovascular procedures, identifies related vs. unrelated services, manages billing for complications, and ensures accurate coding for staged procedures.

Case Studies

See the impact we deliver

Discover how AnnexMed reduces denials, accelerates reimbursements, and strengthens financial performance. Backed by measurable outcomes and proven RCM expertise, we deliver operational excellence, revenue stability, and sustainable growth you can trust.

Client Voices

See how our clients succeed

Hear from organizations that trust AnnexMed to reduce denials, accelerate reimbursements, and strengthen cash flow. Our expert support delivers measurable performance gains, operational efficiency, financial stability, and scalable growth.
Cardiovascular surgery coding demands precision our in-house team could not sustain. AnnexMed captured the full complexity of every CABG and valve case. Collections improved 29% in the first quarter.
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Dr. Thomas Hargrove

Ridgeview Heart Institute
Denials from coding inaccuracies dropped to under 2% after AnnexMed took over. They understand surgical workflows completely. Reimbursement per case increased and compliance concerns are no longer an issue
Anx Testimonial

Dr. Elena Vasquez

Summit Cardiovascular Surgeons
AnnexMed audited our billing and found systematic undercoding across complex procedures. They restructured charge capture and corrected modifier usage. We recovered over $185K in the first quarter from previously underbilled cases
Anx Testimonial

Robert Callahan

Meridian Heart and Vascular Center

Proven RCM Expertise. Delivered at Scale.

For over 20 years, AnnexMed has delivered RCM solutions nationwide, combining expert billing, coding, and AR support to drive measurable results and growth.

Certification

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    Results That Speak Volumes

    Upto

    98%

    First-Pass Claim Acceptance

    Upto

    30%

    Faster AR Turnaround

    Easy

    2-Week

    Practice Onboarding

    Upto

    30%

    Higher Net Collections
    17 +
    Years of Experience
    40 +
    Specialties Served
    99.1 %
    Client Retention

    Chiropractic Revenue Cycle Management That Fits Your Practice

    Chiropractic care blends preventive, therapeutic, and ongoing treatment services, each with specific billing requirements. AnnexMed’s chiropractic medical billing services ensure every adjustment, modality, and therapy is coded correctly, claims meet documentation standards, and reimbursements arrive faster. Whether you’re a solo chiropractor or a multi-location clinic, our solutions adapt to your practice and payer mix.

    Chiropractic Billing Challenges That Limit Revenue

    Billing for chiropractic services goes beyond adjustments. Without precise coding and documentation, claims often stall or get denied.

    Why Chiropractors Choose AnnexMed

    As one of the most trusted chiropractic medical billing companies, AnnexMed helps practices protect revenue while staying fully compliant.

    Our Chiropractic Medical Billing Services

    AnnexMed delivers full-spectrum chiropractic medical billing services designed for steady collections, fewer rejections, and better financial visibility.

    Accurate Chiropractic Coding

    We apply correct CPT codes for spinal manipulation (98940–98942) and adjunct therapies, ensuring providers capture every reimbursable service.

    Medicare & Payer Policy Expertise

    Our team specializes in chiropractic billing guidelines and adapts to commercial payer variations, reducing errors tied to visit caps or coverage differences.

    Eligibility Verification & Claim Scrubbing

    We verify patient coverage upfront and scrub claims against payer-specific chiropractic rules before submission, minimizing costly rejections.

    Accounts Receivable Acceleration

    Dedicated AR teams track unpaid chiropractic claims, identify payer bottlenecks, and prioritize recovery strategies to shorten collection cycles.

    Denial Resolution & Resubmission

    We resolve denials tied to coding errors, therapy/adjustment bundling, and medical necessity gaps, resubmitting clean claims for timely payment.

    Performance Reporting & Analytics

    Our reporting tools highlight payer trends, recurring denials, and revenue leakage, giving practices clear visibility into financial performance.

    Stop Revenue Leaks From Crippling Your Chiropractic Practice

    With AnnexMed’s chiropractic billing services, every adjustment and therapy is billed accurately and reimbursed on time.

    Adhering to Industry Standards

    Compliance to Protect Revenue

    Medicare chiropractic billing guidelines demand exact documentation of medical necessity, visit frequency, and treatment notes. A missing AT modifier or incomplete SOAP note can turn a covered adjustment into a denied claim. AnnexMed builds these rules into every billing step so providers don’t lose revenue over technical gaps.

    Our chiropractic medical billing services adapt workflows to each payer, flagging high-risk claims before submission and reducing audit exposure. This keeps practices audit-ready while safeguarding steady reimbursement.

    Annexmed SOC Certification

    SOC 2 Type 1

    Reporting on controls at a service organization
    ISO Certificate

    ISO 27001:2022

    Securing and protecting information
    Annexmed ISO Certification

    ISO 9001:2015

    Achieving quality policy and quality objectives
    Annexmed SOC Certification

    SOC 2 Type 2

    Implemented the SOC 2 approved by AICPA

    Mid-Size Ohio Health System Untangled $22M in Legacy AR with Annexmed

    0 %
    Improved Staff Productivity
    0 %
    Clean Claim Rate Improved
    0 %
    Reduction in AR >180 Days
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