Cardiology Billing Services

Cardiology revenue depends on diagnostic testing as much as office visits. A single patient can have an ECG, an echocardiogram, a stress test, and a monitor in the same month. Many of these services split into a technical part and a professional part. Who owns the equipment and where the test happens decides what each party can bill.

Procedures add more layers. Cath lab work, stents, and device checks each follow their own bundling and documentation rules. Prior authorization is common for advanced imaging. Westmont Revenue Partners connects cardiology groups with vetted billing experts who know these rules, so a cardiology billing company can match the way your practice actually works.

Who this is for

• General and interventional cardiologists
• Electrophysiology practices
• Cardiology groups with in-office imaging labs
• Practices that read tests for hospitals
• Cardiology groups that operate cardiac rehab programs
• Independent and hospital-affiliated cardiology practices

What gets billed

• New and established patient office visits
• Resting electrocardiograms
• Transthoracic echocardiograms
• Exercise and pharmacologic stress tests
• Nuclear myocardial perfusion imaging
• Ambulatory ECG monitoring and event monitors
• Left heart catheterization with coronary angiography
• Coronary stent placement
• Pacemaker and defibrillator checks
• Cardiac rehabilitation sessions

Commonly billed codes

Code	Type	What it covers
93000	CPT	Routine 12-lead ECG with tracing, interpretation, and report
93306	CPT	Complete transthoracic echocardiogram with Doppler
93015	CPT	Complete cardiovascular stress test with supervision and report
93224	CPT	External ECG recording for up to 48 hours
78452	CPT	Nuclear myocardial perfusion imaging with multiple studies
93458	CPT	Left heart catheterization with coronary angiography
92928	CPT	Coronary stent placement in a single vessel
93797	CPT	Cardiac rehabilitation session without ECG monitoring
I10	ICD-10-CM	Primary high blood pressure
I48.91	ICD-10-CM	Atrial fibrillation, unspecified
I50.9	ICD-10-CM	Heart failure, unspecified
I25.10	ICD-10-CM	Coronary artery disease without angina

Note

Codes are examples for orientation, not a complete list, and do not guarantee coverage or payment. Always check current code sets and payer policy.

Billing challenges in cardiology

Global, technical, and professional splits. Many tests can be billed whole, or as only the technical or professional piece. The right choice depends on who owns the equipment and where it sits. A biller sets this up per test and place of service.

Prior authorization for imaging. Nuclear studies and advanced echo often need approval first. A biller checks requirements by payer before the test is scheduled so denials do not arrive after the fact.

Same-day test and visit bundling. An office visit billed with a test may need a modifier and a clear, separate note. Experienced billers know when payers expect that support.

Cath lab and stent coding. Diagnostic and interventional procedures can bundle, and vessel counts matter. A biller reads the procedure report closely so every vessel and device is captured.

Device monitoring frequency. Pacemaker and defibrillator checks have limits on how often they can be billed. A biller tracks dates for each patient so a claim is not denied for frequency.

Medical necessity and diagnosis linkage. A test claim needs a diagnosis that supports it. A biller works with clinical staff to make sure documentation names the symptom or condition.

Cardiac rehab documentation. Sessions require supervision and a qualifying diagnosis. A biller confirms eligibility and session counts before claims are sent.

How Westmont can help

• Matching you with vetted billing experts experienced in cardiology
• End-to-end revenue cycle support for office, imaging, and procedure claims
• Denial management for testing and authorization issues
• Credentialing support for new cardiologists and for payer enrollment
• Reporting that shows claim status by service line

Frequently asked questions

What is the difference between global, technical, and professional billing for cardiology tests?

A global claim covers both the equipment and the physician's reading. The technical component covers the equipment, staff, and supplies. The professional component is the physician's interpretation. Which one you bill depends on who owns the equipment and where the test is done. A billing expert sets this up for each test so claims are filed correctly.

Do I need prior authorization for echocardiograms and stress tests?

It depends on the payer and the plan. Many payers require approval for advanced imaging such as nuclear studies, while others do not require it for basic tests. Rules change, so check each payer's current policy. A billing team can build a list of requirements by payer so your front desk knows before scheduling.

How often can I bill pacemaker or ICD checks?

Payers set limits on how often device checks can be billed, and the limits vary by device type and monitoring method. Remote and in-person checks may be counted separately or together. A biller tracks each patient's dates and follows current payer policy so claims are not denied for frequency.

Can I bill an office visit on the same day as a test?

Sometimes. If the visit is significant and separate from the test, a payer may allow it with a modifier. The note needs to show the extra work. Without that support, the visit can be bundled. Billers review notes against payer policy before submitting.

When does cardiology outsourcing make sense?

Many practices consider it when test volume grows, when staff turnover creates gaps, or when denials stay high. Westmont does not submit claims itself. We connect you with vetted billing experts, and you decide whether a match fits your needs.

Related billing services

• Cardiac and Vascular Diagnostic Lab Billing
• Cardiac and Pulmonary Rehab Billing
• Cardiothoracic Surgery Billing
• Vascular Surgery Billing
• Internal Medicine Billing