CPT code 21750 denotes surgical closure of a sternal separation arising from a previous sternotomy incision. The procedure addresses wound dehiscence, nonunion, or instability of the sternum after prior cardiac or thoracic surgery and is typically performed in an operating room setting, often during an inpatient episode. Nationally, this code captures a focused reconstructive chest-wall service that affects perioperative resource use, postoperative monitoring, and potential readmission risk.

Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find clinical context for when the procedure is used, typical sites of service, and the types of surgical repair represented by this code. The summary highlights benchmarking considerations and policy-relevant billing elements that influence coverage and claim processing for sternal repair procedures. The content does not include payer-specific rates but outlines what to expect in claims documentation and coding practice for this surgical service.

This publication is intended to inform clinicians, coding professionals, and policy analysts about the clinical role of CPT code 21750, common operational settings, and the national payers that commonly process claims for this procedure. Data not available in the input: associated taxonomies, ICD-10 diagnoses, related codes, and detailed payer-specific reimbursement benchmarks.