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CPT 00529: Anesthesia for Mediastinoscopy With One-Lung Ventilation
CPT code 00529 represents anesthesia services for mediastinoscopy with possible concurrent thoracoscopy that require one-lung ventilation. This code captures the anesthesiologist’s role in providing airway management, controlled ventilation, and hemodynamic support during thoracic procedures that visualize structures in the mediastinum and pleural space. Nationally, accurate use of this code matters for appropriate billing, clinical documentation, and resource allocation for complex thoracic anesthesia cases.
Key payers included in the coverage review are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication summarizes payer coverage practices and common claim considerations across these major payers to inform coding accuracy and administrative preparation.
Readers will learn the clinical context and typical service setting for 00529, common claim modifiers encountered in thoracic anesthesia billing (listed elsewhere in the full publication), and how this code relates to high-acuity cardiovascular and thoracic procedures. The report also links 00529 to relevant inpatient and ambulatory procedural scenarios where one-lung ventilation is required and highlights associated operative procedures commonly performed alongside these anesthesia services. Data not available in the input is noted where applicable.
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Billing Code Overview
CPT code 00529 describes anesthesia services provided for mediastinoscopy and related thoracoscopic procedures requiring one-lung ventilation. The anesthesiologist manages general anesthesia and advanced airway and ventilatory techniques to permit surgical visualization of the mediastinum via an opening at the base of the neck and, when performed, thoracoscopy through a lateral chest incision.
Service Type: Anesthesia for thoracic surgical procedures involving mediastinal and pleural visualization with one-lung ventilation.
Typical Site of Service: Operating room or procedure suite in an inpatient or outpatient surgical facility where thoracic surgical procedures are performed.
National Reimbursement Benchmarks
Commercial reimbursement for CPT 00529 centers around a BUCA average of $69.40, with payer-specific means ranging from $62.00 (Aetna) to $92.90 (Cigna). Blue Cross Blue Shield and UnitedHealth Group both show mid-to-high central tendencies (medians $58.30 and $64.00 respectively), while Cigna posts the highest median at $85.70, indicating a generally higher payment level for that carrier compared with others.
Dispersion varies notably: Blue Cross Blue Shield has a P75–P25 range of $40.20 ($85.50 − $45.30), Aetna’s range is $44.40 ($81.30 − $37.00), UnitedHealth Group’s range is $29.00 ($81.00 − $52.00), and Cigna’s range is $53.30 ($120.00 − $67.70). Cigna therefore exhibits the widest interquartile spread at $53.30, while UnitedHealth Group is the tightest at $29.00, with BUCA’s quartiles ($49.00 to $89.80) implying a range of $40.80 around the average commercial level.