CPT code 19126 denotes the surgical removal of an additional breast lesion that was preoperatively localized with a radiological marker and excised through an open incision after an initial lesion from the same breast has been removed. This code captures an important intraoperative scenario in breast-conserving surgery where multiple lesions are targeted in a single operative session. Accurate reporting affects surgical case documentation, facility billing, and surgical quality measurement across the country. Key payers considered in typical analyses include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.

Readers will learn the clinical context for using CPT code 19126, common sites of service, and how the code fits within breast surgery workflows. The publication outlines benchmarks and coding conventions relevant to this service line, explains typical payer coverage considerations at a national level, and summarizes implications for facility and professional billing. Data not available in the input will be noted where applicable. The content is intended to support coding accuracy, administrative clarity, and alignment between clinical documentation and billing practices for additional marked-lesion excisions in breast surgery.