tci Part B Insider - 2008 Issue 32

Reader Question: TMJ Arthrography May Merit 70332

But keep your eye on the diagnoses to confirm accuracyQuestion: What are the differences among TMJ codes 70328, 70330, and 70332?Answer: Codes 70328 (Radio-logic examination, temporomandibular joint, open and closed mouth; unilateral) and 70330 (... bilateral) both describe x-rays of the temporomandibular joint (TMJ).If the documentation indicates a TMJ x-ray in two projections of one side, one film with the mouth open, and one with the mouth closed, you should report 70328 (unilateral). Report bilateral code 70330 if the documentation shows this TMJ exam on both sides.Note: Having separate codes for unilateral and bilateral TMJ x-rays...

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