Summary & Overview
CPT 0361T: Cardiac CT with Contrast and 3D Postprocessing During Catheterization
CPT 0361T documents intra-procedural, contrast-enhanced multi-slice cardiac CT with 3D postprocessing performed during cardiac catheterization. This specialized radiology procedure provides high-resolution cross-sectional and reconstructed images of the heart and coronary anatomy while catheter-based diagnostics or interventions are underway, aiding visualization and procedural decision-making. Nationally, the code is relevant for centers that integrate advanced CT imaging with invasive cardiology workflows, affecting coding, billing, and resource allocation in outpatient hospital settings.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, and Medicare. The publication outlines payer coverage considerations, common billing modifiers and claim components, and how 0361T relates clinically and operationally to related cardiac catheterization and cardiac CT codes.
Readers will find a concise reference to the clinical context of the procedure, coding relationships to related CPT entries, and common diagnosis links used to support medical necessity. The material summarizes billing components and typical site-of-service implications for outpatient hospital delivery, and notes where input is missing: Data not available in the input for service-line metadata. This executive overview is intended to support coding, revenue cycle, and clinical documentation teams seeking a clear national snapshot of 0361T and its role in integrated cardiac imaging and catheterization workflows.
CPT Code Overview
CPT 0361T describes a multi-slice computed tomography (CT) of the heart with intravenous contrast, including three-dimensional image postprocessing, when performed during cardiac catheterization. This procedure is categorized under Radiology services and is typically performed in an Outpatient Hospital (POS 22) setting. The code captures advanced CT imaging of cardiac structures obtained contemporaneously with invasive catheter-based procedures to support diagnostic assessment and procedural planning.
Clinical & Coding Specifications
Clinical Context
A 64-year-old outpatient with known coronary artery disease and prior aortocoronary bypass graft (Z95.1) is undergoing evaluation during a diagnostic coronary catheterization for recurrent chest pain and suspected graft or native vessel stenosis. During the cardiac catheterization procedure, the interventional team performs a multi-slice contrast-enhanced cardiac CT with 3D postprocessing (0361T) to provide high-resolution cross-sectional and volumetric images of coronary anatomy and graft patency while the patient remains on the catheterization table. Imaging is performed in an outpatient hospital setting (POS 22). The procedural workflow typically includes consent and IV contrast screening, coordination between the interventional cardiology and radiology teams, acquisition of CT images during or immediately following catheter-based angiography, and real-time or near-real-time 3D postprocessing to assist in decision-making about percutaneous coronary intervention or further surgical management.
Coding Specifications
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Modifier
26— Professional Component: Use when reporting only the physician work, interpretation, and report for the CT performed during cardiac catheterization. -
Modifier
TC— Technical Component: Use when reporting only the technical component, including use of equipment, technologist services, and contrast administration for the CT performed during cardiac catheterization. -
Modifier
59— Distinct Procedural Service: Use when the CT with 3D postprocessing represents a distinct procedural service separate from another procedure performed on the same day (for example, separate from diagnostic catheter angiography) and the documentation supports separate service distinctness.
| Associated Provider Taxonomy | Taxonomy Code | Specialty Represented |
|---|---|---|
| Radiology, Diagnostic Radiology | 2085R0202X | Diagnostic radiologist performing image acquisition/postprocessing |
| Cardiovascular Disease Physician | 207RC0000X | Cardiologist specializing in cardiovascular disease; may order or interpret cardiac imaging |
| Interventional Cardiology | 207RI0011X | Interventional cardiologist performing catheter-based procedures and integrating CT findings into procedural decisions |
Related Diagnoses
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I25.10— Atherosclerotic heart disease of native coronary artery without angina pectorisThis chronic coronary atherosclerosis can be evaluated for anatomic severity and potential need for revascularization using CT imaging performed during catheterization.
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I20.9— Angina pectoris, unspecifiedAcute or chronic chest pain syndromes may prompt combined catheter angiography and CT with 3D postprocessing to localize lesions and plan intervention.
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I21.9— Acute myocardial infarction, unspecifiedIn the setting of myocardial infarction, CT imaging during catheterization can assist in assessing coronary anatomy, infarct-related vessel pathology, or complications requiring intervention.
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I50.9— Heart failure, unspecifiedHeart failure patients with suspected ischemic etiology may undergo catheterization with adjunctive CT imaging to evaluate coronary disease contributing to ventricular dysfunction.
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Z95.1— Presence of aortocoronary bypass graftCT performed during catheterization is useful to evaluate graft patency, anastomotic sites, and native vessel-graft relationships when surgical bypass grafts are present.
Related CPT Codes
| CPT Code | Description | Relationship to 0361T |
|---|---|---|
93458 | Catheter placement in coronary artery(s) for coronary angiography | Often performed immediately before or concurrent with 0361T during the same cardiac catheterization session; may represent the diagnostic angiography component separate from the CT imaging. Commonly used together when both catheter angiography and CT imaging are needed. |
75574 | CT, heart, with contrast, for evaluation of cardiac structure and morphology | Alternative or related CT-based cardiac study; 75574 represents a standard CT heart exam outside the context of catheterization, whereas 0361T specifies CT with contrast and 3D postprocessing performed during cardiac catheterization. |
92928 | Percutaneous transcatheter placement of intracoronary stent(s) | May follow diagnostic imaging from 0361T if significant stenosis is identified and immediate percutaneous intervention is indicated; commonly used in the same procedural episode when intervention is performed. |
93571 | Intravascular Doppler velocity and/or pressure derived coronary flow reserve measurement | Ancillary physiologic assessments that can be performed during the same catheterization session; may be used in conjunction with 0361T images to guide decision-making. |
National Reimbursement Benchmarks
National mean rates for CPT 0361T show a clear separation between commercial benchmarks and Medicare-level coverage. Blue Cross Blue Shield reports a mean of $22.32, while BUCA (average commercial) and Cigna are clustered near $62.43 and $62.50 respectively; Medicare-level national data is not available in the input. The comparison indicates that BUCA and Cigna means are substantially higher than the Blue Cross Blue Shield mean.
Rate dispersion (P75 minus P25) is narrow for Blue Cross Blue Shield, where the 25th, 50th, and 75th percentiles are all $14.00, indicating virtually no spread. BUCA and Cigna also show tight distributions with interquartile ranges of about $1.13 and $1.17 respectively, reflecting low variability across NPIs. Data not available in the input for Aetna, UHC, and Medicare; the table and chart below present the full breakdown of available national benchmarks.
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