Summary & Overview
CPT 93318: Continuous Transesophageal Echocardiography (2D) Monitoring
CPT code 93318 represents continuous transesophageal echocardiography (TEE) monitoring using multiple or rotating transducers to obtain two-dimensional cardiac images. This code captures services where a clinician performs sustained monitoring and assessment of cardiac function — commonly used during complex cardiac surgery, interventional procedures, or critical care when real-time imaging guides clinical management. Nationally, accurate coding for continuous TEE affects clinical documentation, intraoperative monitoring records, and facility billing for resource-intensive imaging.
Key payers commonly included in coverage analyses are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise review of the clinical context for 93318, typical sites of service, and the implications for facility and professional billing. The publication provides benchmarks and policy-relevant updates where available, including payer coverage considerations and coding practice notes. It also outlines how 93318 relates to perioperative and critical care workflows and what documentation elements support appropriate use. Data not available in the input will be noted as such in detailed sections.
Billing Code Overview
CPT code 93318 describes continuous monitoring and assessment of cardiac function using transesophageal echocardiography (TEE) with multiple transducers or a rotating transducer to obtain two-dimensional (2D) images. This service involves ongoing imaging to evaluate cardiac structure and function in real time over a monitoring period.
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Service type: Continuous transesophageal echocardiography monitoring and assessment
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Typical site of service: Commonly performed in inpatient procedural settings such as operating rooms, cardiac catheterization laboratories, and intensive care units where continuous TEE monitoring is required for intraoperative or critical care management.
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Clinical & Coding Specifications
Clinical Context
A 68-year-old male with known severe aortic stenosis is scheduled for transcatheter aortic valve replacement (TAVR) under general anesthesia. Intraoperative transesophageal echocardiography (TEE) with a rotating or multiple transducer probe is required for continuous two-dimensional monitoring of cardiac function, valve positioning, immediate assessment of prosthetic valve seating and perivalvular leak, and detection of acute complications such as ventricular dysfunction or pericardial effusion. The cardiac anesthesiologist or intraoperative echocardiographer places the TEE probe after induction of anesthesia and performs continuous assessment during key procedural steps: baseline pre-deployment evaluation, guidance during valve positioning and deployment, immediate post-deployment assessment, and periodic checks in the recovery phase. Documentation includes real-time image acquisition, continuous monitoring notes, measurements of valve function and ventricular performance, and a final interpretive report.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | When billing for the interpreting physician's professional component separate from technical services |
27 | Multiple outpatient hospital services |