tci Outpatient Facility Coding Alert - 2016 Issue 2

Reader Question: Opt for 64400 for a Mandibular Trigeminal Nerve Block

Question: Our surgeon recently reviewed a patient with masseter muscle hypertrophy and pain. He opted to inject lidocaine into the masseter muscle bilaterally to help the patient get relief from the pain. How do I report this procedure? New York Subscriber Answer: Since your clinician administered an injection of a local anesthetic (lidocaine) into the masseter muscle, you will have to choose a code from the range 64400-64489 (Introduction/injection of anesthetic agent [nerve block], diagnostic or therapeutic procedures on the somatic nerves) based on the nerve that your clinician attempted to block. As the masseter muscle is innervated by...

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