CPT code 38900 covers intraoperative sentinel lymph node mapping by injection of a nonradioactive dye and direct examination of regional lymph nodes to detect disease and identify primary draining nodes. This procedure is commonly performed concurrently with tumor resection or lymph node biopsy and is an important step in staging and surgical planning for cancers with lymphatic spread. Nationally, accurate coding of sentinel node mapping affects surgical documentation, case mix classification, and cross-payer comparability of oncologic operative care.

Key payers covered in this summary include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a clinical and billing context for CPT code 38900, including the procedure’s typical use during operative oncology, common sites of service, and considerations that influence coverage and claim adjudication. The publication also outlines benchmarks for utilization, recent policy updates affecting intraoperative mapping procedures, and implications for surgical workflow and coding accuracy.

Intended readers will learn how CPT code 38900 fits into perioperative cancer care, what documentation supports appropriate use, and where policy distinctions among major national payers and Medicare commonly arise. Data not available in the input will be noted where relevant.