tci Part B Insider - 2010 Issue 31

Reader Questions: Anatomy Offers Obturator Block Clues

Question:What codes should we submit for an obturator nerve block and obturator muscle injection?Answer:The obturator nerve is a somatic nerve, so report a local anesthetic injection with 64450 (Injection, anesthetic agent; other peripheral nerve or branch). If your doctor documents that he injected trigger points in the obturator muscles separate from the injection location for the obturator nerve injection, then you should also look at code 20552 (Injection[s]; single or multiple trigger point[s], 1 or 2 muscle[s]).Anatomy: The obturator nerve originates from the second, third, and fourth lumbar nerves. The obturator innervates the adductor, gracilis, and obturator...

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