Summary & Overview
HCPCS C7557: Coronary Angiography with Left Heart Cath and 3D FFR Mapping
HCPCS Level II code C7557 identifies a comprehensive coronary catheterization procedure that combines coronary angiography, left heart catheterization and, when performed, left ventriculography with intraprocedural fractional flow reserve (ffr) measurement and 3D color‑coded ffr mapping. This code captures both imaging and real‑time physiologic assessment used to evaluate possible atherosclerotic stenoses and guide interventional decision‑making. Nationally, C7557 matters because it bundles advanced diagnostic imaging with physiologic mapping that can affect care pathways, procedure selection, and billing complexity.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare and Medicare. Readers will learn the clinical scope and components represented by the code, typical sites of service, and implications for billing and documentation. The publication provides benchmarks and policy context relevant to coverage and coding practices for advanced coronary angiography with intraprocedural ffr and 3D mapping, as well as a concise clinical context to inform clinical and administrative stakeholders. Data not available in the input will be noted where applicable in detailed sections.
Billing Code Overview
HCPCS Level II code C7557 describes catheter placement in coronary artery(s) for coronary angiography with intraprocedural injections, imaging supervision and interpretation, and left heart catheterization when performed. The code also covers intraprocedural injections for left ventriculography when performed and includes intraprocedural coronary fractional flow reserve (ffr) with 3D functional mapping of color‑coded ffr values for the coronary tree, derived from coronary angiogram data, for real‑time review and interpretation of possible atherosclerotic stenosis intervention.
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Service type: Diagnostic and interventional cardiovascular imaging and physiologic assessment
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Typical site of service: Cardiac catheterization laboratory or interventional cardiology suite
Clinical & Coding Specifications
Clinical Context
A 62-year-old male with a history of hypertension, hyperlipidemia, and exertional angina presents to the cardiac catheterization laboratory after a positive noninvasive stress test showing inducible ischemia of the anterior wall. Coronary angiography with left heart catheterization is planned to define coronary anatomy and left ventricular function and to evaluate physiologic significance of intermediate coronary lesions. Under conscious sedation, vascular access is obtained (radial or femoral), coronary catheters are placed in the coronary ostia and contrast angiography is performed. Left heart catheterization with left ventriculography is obtained when indicated to assess ejection fraction and wall motion. Intraprocedural fractional flow reserve (FFR) measurement is performed with real-time 3D color-coded mapping derived from the angiographic dataset to identify hemodynamically significant stenoses and to guide immediate revascularization decisions. Imaging supervision and interpretation are performed by the interventional cardiologist, and the procedure may be followed by percutaneous coronary intervention if indicated.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when work required is substantially greater than typical for coronary angiography/left heart catheterization (requires documentation). |