CPT 70330: Bilateral TMJ Radiography, Open and Closed Mouth
CPT code 70330 denotes bilateral temporomandibular joint radiography with open and closed mouth views, a focused diagnostic service used to assess TMJ pain and mechanical symptoms such as clicking that may reflect articular disc displacement. Nationally, this imaging code is relevant to dental, oral maxillofacial, and radiology practices managing patients with orofacial pain and suspected TMJ structural disorders. Payers commonly involved in coverage and claims for this service include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will find clinical context for when this code is used, typical sites of service, and the operational role of these views in diagnosing TMJ disorders. The publication provides benchmarks and policy- and billing-related considerations relevant to payers and providers, including documentation expectations and common utilization patterns. It also summarizes billing implications for outpatient radiology and dental/maxillofacial practices, and highlights areas where coverage criteria and medical necessity documentation can affect claim decisions. Data not available in the input will be noted where applicable.
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Billing Code Overview
CPT code 70330 describes radiographic imaging of both temporomandibular joints (TMJs) with the mouth both open and closed. The procedure is performed to evaluate patients with TMJ arthralgia or those who experience abnormal clicking of the jaw, findings that may indicate an articular disc disorder.
Service Type: Diagnostic radiography of bilateral TMJs with open and closed mouth views
Typical Site of Service: Outpatient radiology suite or dental/maxillofacial imaging clinic, often performed in ambulatory care settings where diagnostic jaw imaging is available.