Summary & Overview
HCPCS C7523: Coronary Catheterization with IVUS/OCT
HCPCS Level II code C7523 represents advanced coronary catheterization that pairs diagnostic coronary angiography and left heart catheterization with endoluminal imaging using intravascular ultrasound (IVUS) or optical coherence tomography (OCT). This combined service captures both the catheter-based angiographic evaluation and the intravascular imaging component used during diagnostic assessment and/or therapeutic intervention, reflecting contemporary practice when detailed vessel or graft visualization is required.
The code matters nationally because it documents higher-complexity coronary procedures that can affect clinical decision-making, resource use, and payment across hospital and ambulatory settings. Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will learn what C7523 represents clinically and operationally, the typical sites of service, and which major payers cover the service. The publication outlines benchmark considerations, common billing modifiers observed with complex coronary interventions, and the clinical context in which intravascular imaging is used alongside angiography and left ventriculography. Data not available in the input includes associated taxonomies, specific ICD-10 diagnosis pairings, and related codes; where present, those elements are summarized in separate sections.
Billing Code Overview
HCPCS Level II code C7523 describes catheter placement in coronary artery(ies) for coronary angiography, including intraprocedural injection(s) for coronary angiography, imaging supervision and interpretation, with left heart catheterization including intraprocedural injection(s) for left ventriculography, when performed, with endoluminal imaging of initial coronary vessel or graft using intravascular ultrasound (ivus) or optical coherence tomography (oct) during diagnostic evaluation and/or therapeutic intervention including imaging supervision, interpretation and report.
Service Type: Diagnostic and interventional coronary catheterization with intravascular imaging (IVUS or OCT)
Typical Site of Service: Hospital-based cardiac catheterization laboratory or outpatient ambulatory surgical center specializing in interventional cardiology
Clinical & Coding Specifications
Clinical Context
A 68-year-old male with exertional chest pain, known coronary artery disease and prior coronary artery bypass grafting is referred for invasive coronary angiography with possible percutaneous intervention. The patient presents to the hospital catheterization laboratory after pre-procedure evaluation, informed consent, and review of recent noninvasive testing (stress imaging demonstrating ischemia in the left anterior descending distribution). Vascular access is obtained (radial or femoral) under sterile conditions. A diagnostic coronary catheter is advanced into the coronary ostia and contrast injections are performed for coronary angiography. Left heart catheterization with left ventriculography is performed when indicated to assess left ventricular function. During diagnostic evaluation or following a percutaneous coronary intervention (PCI), intravascular imaging using intravascular ultrasound (IVUS) or optical coherence tomography (OCT) is performed on the initial coronary vessel or graft to define lesion morphology, guide device sizing, confirm stent expansion/apposition, or evaluate ambiguous angiographic findings. Imaging supervision, interpretation, and a written report are completed. Typical site of service is an outpatient or inpatient cardiac catheterization laboratory within a hospital or ambulatory surgical center. Common clinical workflow steps include pre-procedure assessment, vascular access, coronary angiography, left heart catheterization/ventriculography if indicated, intraluminal IVUS/OCT imaging during diagnostic evaluation or intervention, interpretation and documentation, and post-procedure recovery and discharge planning.
Coding Specifications
| Modifier | Description | When to Use |
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