For general cardiology offices, interventional and electrophysiology groups, imaging and device clinics and hospital-affiliated cardiovascular programs, most of the lost revenue is decided before a claim is ever built.
Get a free revenue cycle assessmentCardiology revenue cycle management is the financial system that runs a cardiovascular practice from scheduling and coverage verification through authorization, charge capture, coding, claim submission, denial work, appeals, underpayment recovery and patient collections. Medical billing is one stage inside it: the part that begins only once a service has already been performed.
A cardiology encounter is rarely one service. One visit can produce an office evaluation, an echocardiogram, a stress study and a device interrogation, each with its own coverage rule, component owner and reporting interval. Most of what decides payment is settled before the cardiologist sees the patient, which a claim-side fix cannot reach. Our cardiology billing services page covers the claim-side work on its own.
Advanced cardiac imaging, ablation, device implant and stress echocardiography sit behind prior authorization at most commercial and Medicare Advantage plans, and the review is frequently delegated to an outside vendor. UnitedHealthcare operates a cardiology authorization program covering diagnostic catheterization, electrophysiology implants and stress echocardiogram in the outpatient and office setting. Aetna delegates diagnostic cardiology review across CPT 33206 to 33289, 78429 to 78496 and 93350 to 93597. Scope moves in both directions: UnitedHealthcare withdrew a set of nuclear imaging and echocardiogram procedures from prior authorization on 1 January 2026 while other plans held theirs.
Device clinics, remote physiologic monitoring, cardiac rehabilitation and chronic condition management all pay on intervals rather than on visits. Run those calendars well and the practice collects predictable money monthly. Run them badly and it disappears quietly, because nothing denies. The charge never exists, so it never reaches a denial report.
Five minutes with your own reports settles this. Any three together is a system failure rather than a staffing one.
Recognise three or more of these in your own numbers and the problem is the process, not the payer.
Get a free assessmentCardiology practices are organised by where the work happens and who owns the equipment, not by headcount, because that decides the payer, the authorization path and the component billed.
Evaluation, rhythm testing, echocardiography and stress testing in-house, with the group owning both components. Coverage verification dominates.
The professional fee is billed while the hospital bills separately, against a case record the group does not own.
Implant, ablation and a standing population of monitored patients. The money is a recurring calendar rather than a set of encounters, and it is the line most often under-collected.
Nuclear perfusion, cardiac CT, PET and duplex, each behind a local coverage determination and delegated payer review.
Professional fees across several places of service, captured in one system and billed from another.
Session-limited and physician-supervised under 42 CFR 410.49, so payment depends on tracking a session count against an eligibility window.
Google asks what the 7 steps of the revenue cycle are. Here they are with the cardiology failure mode attached to each, because the generic version reads the same in every specialty.
The study is booked and the financial path is set. Cardiology fails here when a nuclear study or stress echocardiogram reaches the schedule before anyone checks this year's authorization list.
Active coverage, plan type, deductible status and whether Medicare is primary. Cardiology panels skew older and are among the likeliest to carry a second payer.
The approval, its validity window and the exact procedure it covers. The cardiology failure mode is rarely a missing authorization. It is one issued for a different study, or one that lapsed when the case moved.
Turning finished clinical work into a charge. This is where the most invisible money goes, because interrogations, transmissions, rehabilitation sessions and hospital rounds are finalized in systems that create no charge.
Component assignment, modifier selection and scrubbing. A clean claim rate below the mid nineties usually points upstream at registration and authorization data rather than at the coders, which is where our certified coders start.
Remittances read rather than filed, denials sorted by root cause, adjustments checked against the contract. Underpayments appeared on 7.8% of paid claims we audited, and the average underpaid claim was short by $38. Our denials and AR recovery team runs variance and denial as two queues.
Aged AR worked by value and age, and patient balances collected against a deductible that reset in January at $283 for Medicare Part B.
The five leak causes we find most often when auditing a cardiology practice, ordered by cause rather than by code, with annual exposure modelled on a five-physician group collecting $4,200,000 a year.
| Leak point | Codes or rule | What goes wrong | Annual dollars at risk | Luxen audit finding |
|---|---|---|---|---|
| Coverage never confirmed before the study | Medicare Secondary Payer rules and the plan eligibility file | Plan changed or another payer is primary, and nobody looked before the scan | $109,000 | Eligibility and coverage errors caused 23% of cardiology denials |
| Authorization exists but does not match the study | CPT 78452 plus delegated review ranges 93350 to 93597 apply | Approval covers a different study, or lapsed when the case was rescheduled | $68,000 | 16% of denied advanced cardiac imaging claims carried an authorization number that did not match the study performed |
| Finished work that never became a charge | Codes 93296 and 99457 both run on intervals | Reports finalize in a vendor platform that writes no charge into the practice system | $137,000 | Median charge lag was 6 days for studies and 9 days for device clinic work |
| Covered programs stopped short of their limit | Codes 93797 and 93798 under 42 CFR 410.49 limits | Patients drop out and nobody tracks the session count or requests the extension | $89,000 | Cardiac rehabilitation programs billed a median of 24 of the 36 sessions Medicare covers per patient |
| Paid claims that came in under contract | Payer fee schedule and contracted rate file | Posted as paid, with the variance against contract never calculated | $71,000 | Underpayments appeared on 7.8% of paid claims audited |
We will tell you which of these leaks is open in your practice, free, in 30 minutes.
Book the reviewEvery competing page names these metrics and none publishes a target. The two right-hand columns are sourced differently. Typical is the federal figure where one exists: the CERT FY2025 Medicare Part B improper payment rate of 8.4% is the only federally published error benchmark bearing on this table. No federal source publishes days in AR, net collection rate, clean claim rate or cost to collect, so Typical for those comes from 410 Luxen billing reviews, and Target from Luxen client data across 38 practices.
| Metric | Definition | Typical | Target |
|---|---|---|---|
| Days in AR | Average days from date of service to payment posted | 45 to 52 days | Under 35 days |
| Net collection rate | Payments divided by charges net of contractual adjustments | 91.4% | 97.8% |
| Clean claim rate | Claims paid on first submission with no edit or correction | 89.6% | 97.3% or better |
| First-pass denial rate | Share of submitted claims denied on first adjudication | 13% to 15% | Under 7% |
| Cost to collect | Fully loaded billing cost as a share of collections | 7% to 9% | 3% to 6% |
| Device and monitoring charge capture | Billable device and remote monitoring services reaching a claim | Not federally published | 98% or better |
The last row is the cardiology-specific one, and it is the fastest to move: the gap is a reconciliation problem, not a payer problem.
Typical values come from the named federal source in the table intro. Target values come from Luxen client data.
Authorization is the stage where a cardiology practice has the most control and the least process in place. Two things changed in 2026 and neither one is widely understood yet.
Under the CMS Interoperability and Prior Authorization final rule, CMS-0057-F, impacted payers must return expedited decisions within 72 hours and standard decisions within 7 calendar days, beginning 1 January 2026. The rule binds Medicare Advantage organizations, state Medicaid and CHIP fee-for-service programs, Medicaid managed care plans and CHIP managed care entities. Qualified health plan issuers on the federal exchanges are excluded from the decision timeframe requirement. Those payers must also give a specific reason for every denial and publish their authorization metrics annually. That is a scheduling asset: a practice that records the request date can hold a payer to a published deadline rather than calling to ask.
42 CFR 422.138 states that once a Medicare Advantage organization approves an item or service through prior authorization, it may not later deny coverage for lack of medical necessity, absent good cause or fraud. 42 CFR 422.112 requires an approval for an active course of treatment to stay valid as long as it remains medically necessary, and gives a new enrollee a minimum 90-day transition period during which the plan must not require reauthorization. 42 CFR 422.137 requires a utilization management committee to review every authorization policy at least annually against traditional Medicare coverage. Post-service medical necessity denials on authorized cardiology services are appealable on the regulation, not on the chart.
The WISeR Model runs from 1 January 2026 through 2031 in New Jersey, Ohio, Oklahoma, Texas, Arizona and Washington, covering nerve stimulators, spinal procedures, knee arthroscopy and skin substitutes. No cardiovascular service is in scope. Cardiology authorization exposure is commercial and Medicare Advantage, not Medicare fee for service, so a group in Texas or New Jersey should plan on that basis. Our eligibility and prior authorization team tracks request dates, approved codes and expiry against the live schedule.
Denials get attention because they are visible. The larger cardiology number is revenue that never denies, because no claim was ever created. Four recurring lines produce it.
A remote cardiac device evaluation under 93293 to 93296 is billable once per 90-day interval, and not billable where the monitoring period runs under 30 days. That is a rolling calendar held per patient, and the reports are finalized in a manufacturer platform that writes nothing into the practice system. Reconciling those two systems is the highest-yield workflow in a cardiology revenue cycle.
CMS added two codes for 2026 that close gaps the old thresholds created. CPT 99445 covers daily recordings or program alerts across 2 to 15 days, below the previous 16-day minimum. It cannot be billed alongside the 16 to 30 day device supply code. CPT 99470 covers the first 10 minutes of treatment management in a calendar month, below the previous 20-minute threshold, so time that used to fall short of the bar is now billable. Practices that abandoned remote monitoring because patients rarely cleared the old thresholds should re-run the numbers.
Under 42 CFR 410.49, cardiac rehabilitation allows a maximum of 2 one-hour sessions per day and 36 sessions across 36 weeks, with a second 36 available where a significant intercurrent illness or comorbidity occurred and exit criteria were not met. Covered indications include acute myocardial infarction within 12 months, coronary bypass, stable angina, valve repair or replacement, stenting, transplant, and stable chronic heart failure with an ejection fraction of 35% or less. Virtual direct supervision of cardiac and intensive cardiac rehabilitation is now permanent, which removes the staffing constraint that capped session volume at many programs.
Principal care management, 99424 through 99427, is built for a single high-risk chronic condition managed by a specialist, which describes a cardiology heart failure panel exactly. Chronic care management codes 99490, 99439, 99491 and 99437 apply where two or more conditions are managed. CMS states plainly that specialty practitioners may bill these.
Six of the eight pages ranking for this subject mention eligibility in one bullet. It is the largest denial category in our cardiology audit and the cheapest thing on this page to fix.
An eligibility response confirms the plan is active. It does not tell you whether this plan is primary, whether the benefit sits behind a delegated review vendor, whether the deductible has reset, or whether the scheduled study needs authorization under this year's list. Those questions need a person who knows what was ordered.
Providers must determine whether Medicare is the primary payer before submitting, and must ask patients about other coverage at each visit. Medicare is secondary for working aged patients on a group plan at an employer with 20 or more employees, for disability at an employer with 100 or more, during the 30-month end-stage renal disease coordination period, and behind liability, no-fault and workers compensation. Getting this wrong rarely produces a clean denial. It produces a payment that gets recovered later.
None of this works if the rendering provider is not enrolled and linked to the right group and location. A lapsed re-credentialing holds payment on every claim that provider touches, and claims that do pay may pay at the wrong rate. We keep credentialing and enrollment inside the cycle, not beside it.
Practices lost 3.1% of collections to patient balances written off before a second statement was sent, while plain-language statements plus text reminders raised patient collections 22% across 14 practices. For uninsured and self-pay patients a good faith estimate is required under 45 CFR 149.610, due within 1 business day of scheduling when the service is at least 3 business days out. Our patient billing team owns it.
Dataset: the Luxen claim audit of 61,400 claims reviewed between January 2025 and June 2026, of which 8,700 were cardiology and cardiovascular, read alongside the cardiology practices inside 410 Luxen billing reviews over the same window. Counted: denial cause by dollar value, authorization records matched against the procedure performed, charge lag, session counts against covered limits, and paid-claim variance against contracted rates.
Cite as: Luxen Cardiology Revenue Cycle Audit 2026, 8,700 cardiology claims, January 2025 to June 2026.
Six-cardiologist group, in-house imaging lab and device clinic, over 11 months.
The practice arrived with $214,000 in AR past 120 days, a first-pass denial rate of 15.4% and 58 days in AR. The largest cause was not coding. Imaging was scheduled before the authorization list was checked against the current plan year, and monitoring transmissions were read in the manufacturer platform without creating a charge.
We loaded payer authorization requirements against the schedule, built a device interval register per patient, and worked aged AR by dollar value rather than date order. Across 11 months days in AR fell from 58 to 31, first-pass denial rate from 15.4% to 5.9%, and $163,400 was recovered from AR the practice had stopped working.
Reported by the practice administrator, cardiology and electrophysiology group.
Four Luxen datasets sit behind this page. Client outcomes: 38 practices, January 2024 through June 2026. Practice billing reviews: 410, January 2025 through June 2026. Claim audit: 61,400 claims, same window. Practice Manager Survey 2026: 286 managers, March 2026.
Worked arithmetic for the same group, sitting at the typical end of the benchmark table above: five cardiologists, $4,200,000 collected annually, 48 days in AR, a 14% first-pass denial rate, 28,000 claims a year at an average allowed amount of $118.
$4,200,000 divided by 365 is $11,507 of charges a day. Moving from 48 days in AR to 34 removes 14 days, and 14 multiplied by $11,507 is $161,098 released once. A one-time cash event, not recurring revenue.
At 14%, 28,000 claims produce 3,920 denials. If 19% are never reworked, 745 are abandoned, which at $118 each is $87,910 a year. At 7% the denied pool falls to 1,960 claims and the abandoned share to about $43,896, a recurring recovery of roughly $44,000.
24,080 paid claims, 7.8% underpaid at $38 average shortfall is $71,373 of annual variance. Assume half recoverable after contract review and the recurring figure is about $35,700.
At 4.5% the fee is $189,000 against $358,000 in-house. Recurring items total roughly $79,700 before any charge capture improvement, and the AR release adds $161,098 in year one.
Want this arithmetic run on your own collections and denial rate?
Run my numbersOne page per search result publishes a number. Everyone else says it depends.
Pricing runs from 3% to 6% of collections. Three things set where a practice lands: monthly charge volume, the number of service lines in scope, and whether the front end is ours or yours. A single-site office with in-house echo and stress sits mid-band. A group adding a device clinic, cardiac rehabilitation and hospital-based professional fees sits higher, because there are more calendars to run.
The agreement is month to month with 30 days notice. No setup fee, no exit fee. Credentialing is quoted separately.
Nobody ranking for this subject publishes a line-item comparison. Modelled on the same five-physician group at a 4.5% rate.
| Line item | In-house | Luxen |
|---|---|---|
| Fully loaded staffing, three billers and an AR specialist | $248,000 | Included |
| Authorization and eligibility staff time | $54,000 | Included |
| Clearinghouse, scrubbing and payer portal access | $13,000 | Included |
| Denial rework and appeal handling | $32,000 | Included |
| Vacancy and turnover coverage | $11,000 | Included |
| Fee at 4.5% of collections | Not applicable | $189,000 |
| Annual total | $358,000 | $189,000 |
| As a share of collections | 8.5% | 4.5% |
Keep it in-house if you have a tenured cardiology biller who owns denial root cause, your device and rehabilitation calendars are reconciled, and you have redundancy for holidays and resignations. Open biller roles took a median 67 days to fill and 34% of practice managers replaced a biller in the past two years, so redundancy is the part that fails. There is also a state-by-state view of medical billing companies.
People search for the top 5 RCM companies in the country. No such list survives contact with a specialty: the right partner for a device-heavy electrophysiology group is the wrong one for a hospital-affiliated interventional practice. Score candidates instead, weighting each criterion 1 to 5 and asking for evidence, not an answer.
Two questions separate most candidates on their own: what is our expected-payment variance, and what happens to a denial on day 91.
You already have a biller, and the fear is a gap in cash during handover. That is a sequencing problem, not a risk you have to accept.
Work begins once the business associate agreement is signed and system access granted. Claims are moving inside the first two weeks, and current claims keep flowing from day one while the oldest money is worked in parallel, so nothing pauses. First recovered payments arrived a median of 17 days after work began. We recovered 61% of the dollar value of claims aged 90 to 180 days that practices had stopped working, and 23% of dollar value on claims aged past 180 days, so the backlog you are about to write off is worth keeping.
Nothing migrates. We work inside the practice management system, imaging platform and device portals you run.
We work inside what you already run and nothing migrates, which matters more than a vendor pitch suggests: 38% of practice managers had changed their EHR or practice management system in the past five years, and 71% of those said collections dipped for at least six months afterwards. Our full-service billing team builds in this order.
Practice managers estimated 11 staff hours a week on insurance calls and portal checks. Steps one and three are where it goes.
Pre-registration and scheduling, eligibility and coordination of benefits, prior authorization and utilization review, charge capture, coding and claim submission, payment posting and denial management, then AR follow-up and patient collections. Longer 12-step versions split the same work more finely without adding a stage. In cardiology the third and fourth steps hold most of the money, because imaging sits behind authorization and a remote device evaluation is billable once per 90-day interval.
No ranking holds across specialties, because the criteria that matter to a device-heavy electrophysiology group differ from those that matter to a hospital-affiliated interventional practice. Score candidates on seven criteria instead: front-end ownership, device and monitoring reconciliation, denial reporting by root cause and dollar value, underpayment detection, cardiology coder credentials, contract terms and system fit. 52% of practices that switched vendors cited missing denial reporting as the main reason.
Treating eligibility as a check mark rather than a decision, which is why eligibility and coverage errors caused 23% of cardiology denials in our audit. Assuming an authorization covers whatever study is eventually performed: 16% of denied advanced cardiac imaging claims carried an authorization number that did not match the procedure. Letting device reports finalize in a vendor platform without creating a charge. And posting remittances as paid without checking variance against the contract.
The Luxen range is 3% to 6% of collections. Charge volume, the number of service lines in scope and front-end ownership decide the rate. A five-cardiologist group collecting $4,200,000 annually pays $189,000 at 4.5%. The same group running billing in-house, counting authorization and eligibility staff time, lands at $358,000 or 8.5% of collections.
Claims are being worked inside the first two weeks, and first recovered payments arrived a median of 17 days after work began. Clean claim rate moves fastest: it rose from 89.6% to 97.3% in the first 90 days across our client base. Days in AR lags that by a quarter. Appeals run on the payer's clock, with median appeal turnaround at 34 days from filing to decision.
Medical billing is one stage of the revenue cycle, the part beginning after a service has been performed: coding it, submitting the claim and chasing payment. Revenue cycle management starts before the patient arrives, with scheduling, eligibility, coordination of benefits and authorization, and continues after payment with underpayment recovery and patient balances. In cardiology that distinction decides most of the money, because 23% of denials in our audit began at eligibility, a stage billing never touches.
A free 30 minute review of your AR ageing and denial reasons. We tell you what is recoverable and what it would take. No deck, no commitment, no fee.
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