CPT Knowledgebase - Apr 5, 2021

What code is reported for a first metatarsal cuneiform joint fusion with intermediate cuneiform stabilization for correction of hallux valgus, when no bunion is excised? For example, an incision was made at the first metatarsocuneiform joint, and dissection was taken down to the dorsal aspect of the first metatarsocuneiform joint. A jig was placed, and a saw was used to resect a small portion of the surface from the base of the metatarsal and the medial cuneiform. The fusion site was coapted and fixated with two 4-hole plates and screws. It was noted there was laxity between the medial cuneiform and the intermediate cuneiform, which the surgeon believed could increase the risk of pseudoarthrosis of the fusion site. Therefore, a guidewire was placed from the medial side of the first metatarsal into the intermediate cuneiform and it was fixated with a screw placed across the fusion site over the guidewire, thus eliminating the laxity.

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