CPT code 19284 designates an add-on stereotactic breast localization procedure for placement of a secondary localization device (such as a clip, metallic pellet, wire/needle, or radioactive seed) at an additional lesion during the same session as an initial localization. As an add-on code, 19284 is billed in conjunction with the primary localization service and is relevant to breast imaging, surgical planning, and oncologic workflows. Nationally, accurate coding for add-on localization supports appropriate tracking of procedure complexity and resource use in breast-conserving therapy pathways.

Key payers included in this nationwide review are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The summary outlines payer coverage patterns, common modifiers and billing considerations, and where 19284 fits within breast localization coding practice.

Readers will learn the clinical context for using 19284, the typical sites of service and procedural setting, and the coding relationship between the primary stereotactic localization and this add-on entry. The publication also provides benchmarks and policy-focused context relevant to reimbursement and documentation expectations. Data not available in the input is noted where specific payer policy details, associated taxonomies, ICD-10 pairings, and related codes would otherwise be required.