CPT code 70336 denotes an MRI of the temporomandibular joint (TMJ), a high‑resolution, noninvasive imaging study that evaluates soft tissues and intra‑articular function using dynamic maneuvers. MRI of the TMJ is the preferred modality for diagnosing disc displacement, joint effusion, inflammatory change, and other periarticular abnormalities because it provides superior soft‑tissue contrast without ionizing radiation. Nationally, utilization of TMJ MRI affects imaging capacity, radiology workflows, and payment policy for specialized musculoskeletal and head/neck imaging services.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context and typical sites of service, comparative benchmarks where available, common billing considerations, and recent policy or coverage themes affecting MRI of the TMJ. The publication also summarizes coding relationships and operational considerations relevant to outpatient imaging centers and hospital radiology departments.

This summary is intended to orient clinicians, billing professionals, and policy analysts to the clinical purpose of CPT code 70336, the payer landscape, and the types of benchmarks and policy updates that influence reimbursement and utilization at a national level.