Wiki Bicoronal flap

AN2114

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The doctor is planning on doing a bicoronal flap in the hairline and diamond burr to smooth down bone. Patient had frontal bone trauma. Trying to figure out what code to use for pre cert but I have never coded this before. Does anyone have an idea? I wasn't sure if this would be an advancement flap or something else. Any input is helpful.
 
From coder desk reference consider this:
21137
The physician performs surgery on the forehead to correct a skeletal deformity. With the patient under anesthesia, the physician makes an incision in the hairline to expose the forehead of the skull. The deformity in the bone is identified and fully exposed. The physician uses a variety of surgical instruments to reshape the bone to make it follow a more normal contour. The wound is irrigated and closed in layers.
 
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