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.