CPT® Code 40652

The procedure described by CPT® Code 40652 involves a full-thickness repair of the lip, specifically addressing injuries that affect up to half of the vertical height of the lip. The lips are anatomically divided into three distinct regions: the cutaneous, vermilion, and mucosal areas. The cutaneous region encompasses the outer skin of the lip, while the vermilion region is the pinkish-red area that is more delicate and composed of modified mucosal membrane. The mucosal portion is located inside the mouth and is adjacent to the teeth. In the context of this procedure, a full-thickness repair means that all layers of the lip, including skin, muscle, and mucosa, are involved in the repair process. The surgical technique requires careful alignment of the vermilion border to ensure aesthetic outcomes, and the repair is performed in a specific sequence to promote optimal healing and minimize scarring. This procedure is indicated for lacerations that do not exceed half of the vertical height of the lip, distinguishing it from more extensive repairs that may require additional techniques or considerations.