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CPT 93456: Imaging Supervision and Interpretation for Coronary Angiography with Right Heart Catheterization
CPT code 93456 denotes the imaging supervision and interpretation component of a coronary angiography performed with right heart catheterization, including the necessary contrast injections to assess coronary artery disease or stenosis. Nationally, this code matters because it delineates the professional interpretation service separate from catheter placement and technical components, affecting billing, payer adjudication, and clinician documentation practices. Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, United Healthcare, and Medicare. Readers will learn how 93456 fits within the clinical workflow of diagnostic coronary angiography with right heart catheterization, how it relates to adjacent procedural codes (such as codes for right heart catheterization and catheter placement), and which clinical scenarios commonly justify its reporting. The publication also provides benchmarks and policy-relevant context for coding and reimbursement patterns, clarifies the scope of services represented by the code, and outlines common billing considerations and associated procedural coding relationships. This summary is intended for a national audience of clinicians, coding professionals, and policy analysts seeking concise guidance on the clinical and billing role of CPT code 93456.
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Billing Code Overview
CPT code 93456 describes imaging supervision and interpretation for coronary angiography performed with right heart catheterization, including injections to evaluate coronary artery disease or arterial stenosis. This code represents only the imaging supervision and interpretation component of the procedure rather than catheter placement or other technical services.
Service type: Imaging supervision and interpretation for coronary angiography with right heart catheterization
Typical site of service: Hospital catheterization laboratory or outpatient/inpatient cardiac catheterization suite
National Reimbursement Benchmarks
Commercial averages sit notably above Medicare: Blue Cross Blue Shield’s mean ($4,681.10) and BUCA’s mean ($3,158.30) contrast with Medicare’s mean ($756.80), indicating a substantial premium for commercial contracts relative to the federal program. Blue Cross Blue Shield leads on mean compensation, while Medicare’s mean aligns closer to lower-mid commercial tiers such as Aetna and Cigna.
Dispersion measured by the interquartile range (P75–P25) is widest for Blue Cross Blue Shield at $5,087.10, reflecting heavy variation across geographies or contract structures. UnitedHealth Group ($970.20) and Cigna ($1,037.20) show moderate dispersion. The tightest spreads are Aetna ($693.00) and BUCA ($3,294.40), though BUCA’s larger absolute mean means its IQR reflects high but relatively concentrated commercial pricing compared with Blue Cross Blue Shield.