Endoscopic ultrasound guided fine needle aspiration biopsy or biopsies (endoscopy with ultrasound imaging) to obtain one or more specimens from either or both of the following: (a) mediastinal masses; (b) locoregional nodes to stage non-small cell lung carcinoma; other than a service associated with a service to which an item in Subgroup 1 of this Group, or item 38417 or 55054, applies (H) (Anaes.)