CPT code 38530 represents an open excision or biopsy of lymph nodes in the internal mammary gland performed with a scalpel to obtain tissue for diagnostic pathology. This surgical procedure is clinically important for staging, diagnosing, or directing treatment of thoracic and breast-related disease that involves internal mammary lymph nodes. Nationally, accurate coding of this procedure affects clinical documentation, surgical quality metrics, and appropriate case reporting across hospital and ambulatory surgical settings.

Key payers considered in this context include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical framing of the procedure, coding context, and payer relevance. The publication outlines typical sites of service, common clinical indications, and where this code fits within surgical oncology and thoracic surgery service lines.

This resource provides benchmarks and policy-relevant information where available, flags areas with "Data not available in the input" when specific payer policies or associated taxonomies are not provided, and summarizes practical considerations for coding and documentation. The goal is to give clinicians, coders, and policy analysts a clear, national-level summary of what CPT code 38530 represents and why it matters for clinical and administrative workflows.