CPT code 38550 represents the surgical excision of a cystic hygroma in the neck or armpit, a targeted procedure to remove superficial lymphatic malformations without deep dissection around major nerves and blood vessels. This code is important nationally because it documents a specific operative service used by surgeons and facilities to classify and bill for treatment of congenital or acquired cystic lymphatic lesions in pediatric and adult populations.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a clear description of the clinical service, typical sites of care, and the operational context in which CPT code 38550 is used. The publication outlines common billing considerations, expected care settings, and the clinical context for use. It also summarizes available benchmarks and policy-relevant elements where data exist and notes when input data are not available.

The report is intended for clinicians, billing professionals, and policy analysts seeking a concise reference on CPT code 38550, what it represents clinically, and the payer landscape relevant to this specific excision procedure.