CPT® Code 42815

The procedure described by CPT® Code 42815 involves the excision of a branchial cleft cyst, vestige, or fistula that extends beneath the subcutaneous tissues and/or into the pharynx. A branchial cleft cyst, vestige, or fistula is a congenital anomaly that occurs in the lateral part of the neck due to the failure of the branchial cleft to close properly during embryonic development. This condition can lead to the formation of cysts or fistulas that may cause discomfort or complications if not addressed. The excision process requires careful surgical intervention, as the cyst or fistula may be located in a complex anatomical area, necessitating precise dissection to ensure complete removal. The procedure may involve horizontal incisions in the skin to access the cyst or fistula, and in cases where the anomaly extends into deeper tissues or the pharynx, additional techniques may be employed to ensure thorough excision. This may include using a peroral route for access or a combined approach for fistulas that extend from the neck into the pharynx, highlighting the intricacies involved in managing this congenital condition.