Summary & Overview
CPT 93459: Coronary Angiography with Left Heart Catheterization and Bypass Graft Imaging
CPT code 93459 represents a comprehensive diagnostic cardiac catheterization procedure, including coronary angiography, left heart catheterization, and bypass graft angiography. This procedure is essential for evaluating coronary artery disease, assessing bypass graft patency, and guiding clinical decision-making in cardiology. Nationally, this code is recognized by major payers such as Aetna, Blue Cross Blue Shield, Cigna Health, Medicare, and UnitedHealthcare, reflecting its widespread clinical and billing relevance.
This publication provides an in-depth overview of 93459, covering payer coverage, clinical indications, and recent policy updates. Readers will gain insight into typical sites of service, common clinical scenarios, and associated diagnoses, including cardiac amyloidosis, myocardial infarction, and various forms of heart failure. The analysis also highlights related CPT codes for similar procedures, offering context for coding and billing distinctions. Key modifiers used in reporting this service are also discussed, ensuring clarity on professional and distinct procedural components.
Healthcare professionals, administrators, and policy analysts will find benchmarks, coding guidance, and payer policy trends relevant to diagnostic cardiac catheterization. The summary equips readers with the latest information on coverage, clinical context, and procedural details for 93459, supporting accurate reporting and understanding of this critical cardiology service.
CPT Code Overview
CPT code 93459 is used to report catheter placement in coronary artery(s) for coronary angiography, including intraprocedural injection(s) for coronary angiography, imaging supervision and interpretation. This code also includes left heart catheterization with intraprocedural injection(s) for left ventriculography, when performed, and catheter placement(s) in bypass graft(s) (internal mammary, free arterial, venous grafts) with bypass graft angiography.
Service type: Cardiology — Diagnostic cardiac catheterization procedures
Typical site of service: Hospital outpatient or inpatient facility settings, often designated as POS 22 or 21.
Clinical & Coding Specifications
Clinical Context
A typical patient scenario involves an adult patient with a history of coronary artery bypass graft surgery presenting with symptoms suggestive of myocardial ischemia, such as chest pain or shortness of breath. The patient may have underlying conditions like heart failure or suspected myocardial infarction. The clinical workflow includes hospital admission (either inpatient or outpatient), evaluation by a cardiologist, and scheduling for diagnostic cardiac catheterization. The procedure described by CPT code 93459 involves catheter placement in the coronary arteries and bypass grafts, intraprocedural injections for angiography, and left heart catheterization with possible left ventriculography. Imaging supervision and interpretation are performed during the procedure to assess graft patency, coronary anatomy, and ventricular function.
Coding Specifications
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Modifiers:
- Modifier
26: Used when reporting only the professional component of imaging supervision and interpretation. Applicable when the provider does not own the equipment or facility. - Modifier
59: Indicates a distinct procedural service, used when the procedure is separate and distinct from other services performed on the same day.
- Modifier
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Provider Taxonomies:
| Taxonomy Code | Specialty Name |
|---|---|
207RC0000X | Interventional Cardiology |
207RP1001X | Cardiovascular Disease |
These taxonomies represent providers specializing in interventional cardiology and general cardiovascular disease, who are typically qualified to perform and interpret diagnostic cardiac catheterization procedures.
Related Diagnoses
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E85.81: Cardiac amyloidosis (replaced E85.8 in group 2 of relevant LCD)- Relevant for patients with suspected or known cardiac amyloidosis, which can affect heart function and may necessitate diagnostic catheterization.
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E85.82: Other heredofamilial amyloidosis (added to group 2)- Indicates hereditary forms of amyloidosis affecting the heart, warranting evaluation by catheterization.
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E85.89: Other amyloidosis (added to group 2)- Covers other types of amyloidosis that may involve the heart and require assessment.
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I21.9: Acute myocardial infarction, unspecified (added to groups 2 and 3 in the LCD)- Used for patients presenting with acute MI, where catheterization is needed to assess coronary anatomy and graft patency.
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I21.A1: Other type 1 myocardial infarction (added to groups 2 and 3)- Represents specific type 1 MI, relevant for diagnostic evaluation.
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I21.A9: Myocardial infarction type 1, unspecified (added to groups 2 and 3)- Used for unspecified type 1 MI, indicating need for coronary assessment.
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I50.810: Acute systolic (congestive) heart failure- Indicates acute heart failure, which may prompt catheterization to evaluate underlying coronary disease or graft function.
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I50.811: Chronic systolic (congestive) heart failure- Chronic heart failure patients may require periodic assessment of coronary and graft status.
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I50.812: Acute on chronic systolic (congestive) heart failure- For patients with acute exacerbation of chronic heart failure, diagnostic catheterization may be indicated.
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I50.814: Combined systolic and diastolic (congestive) heart failure- Patients with both systolic and diastolic dysfunction may need comprehensive cardiac evaluation.
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I50.82: Chronic diastolic (congestive) heart failure- Chronic diastolic heart failure may be associated with coronary disease, requiring catheterization.
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I50.89: Other heart failure- Covers other forms of heart failure that may necessitate diagnostic cardiac catheterization.
Related CPT Codes
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93458: Catheter placement in coronary artery(s) 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.- This code is similar to
93459but does not include catheter placement in bypass grafts or bypass graft angiography. It is used when only native coronary arteries are evaluated.
- This code is similar to
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93460: Includes catheter placement in both left and right sides of heart for coronary angiography with left heart catheterization etc.- This code extends the procedure to include right heart catheterization in addition to left heart catheterization and coronary angiography. It may be used when a more comprehensive hemodynamic assessment is required.
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93461: Further extension including additional angiography procedures.- This code is used when additional angiographic procedures are performed beyond those described in
93459or93460, such as imaging of additional grafts or vessels.
- This code is used when additional angiographic procedures are performed beyond those described in
These codes are related in that they represent variations or extensions of diagnostic cardiac catheterization procedures. Depending on the clinical scenario, they may be used together or as alternatives to 93459.
National Reimbursement Benchmarks
Medicare's national mean rate for CPT code 93459 is $751.83, which is significantly lower than the BUCA (Blue Cross Blue Shield, UnitedHealth Group, Cigna, and Aetna) commercial average of $1,078.65. Among commercial payers, UnitedHealth Group and Cigna have the highest mean rates, both exceeding $1,300, while Aetna is the lowest at $896.33.
Rate dispersion, measured by the difference between the 75th and 25th percentiles, varies notably across payers. Medicare shows the widest spread at $714.00, indicating substantial variability in reimbursement. Aetna has the tightest range at $255.30, suggesting more consistent rates. Cigna and UnitedHealth Group also display wide dispersions, with $634.00 and $633.20 respectively.
The table and chart below present the full breakdown of national benchmarks for CPT code 93459 by payer, including mean rates and percentile values.
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