CPT code 70328 denotes unilateral temporomandibular joint (TMJ) radiographs obtained with the mouth open and closed to evaluate joint pain or clicking that may reflect articular disc disorders. Nationally, this code captures a common, focused diagnostic imaging service used by oral surgeons, dentists, and radiologists to characterize TMJ mechanics and guide further diagnostic or therapeutic steps. Coverage and reimbursement for TMJ radiography affect access to timely diagnosis for patients with TMJ dysfunction.

Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical context for the procedure, typical sites of service, common billing modifiers, and how this service is categorized in procedural coding. The publication summarizes benchmark payment considerations, coding guidance, and areas where payers often apply clinical necessity criteria for TMJ imaging. It also highlights potential documentation elements that support billing and medical necessity determinations.

This summary serves clinicians, billing professionals, and policy analysts seeking a national-level briefing on CPT code 70328, its clinical purpose, and the payer landscape affecting access to TMJ radiographic evaluation.