CPT® Code 27889

Ankle disarticulation, as defined by CPT® Code 27889, is a surgical procedure that involves the complete removal of the foot at the ankle joint. This procedure is typically indicated in cases where there is severe trauma, infection, or other conditions that compromise the viability of the foot. The process begins with the careful marking of incision lines on the skin to guide the surgical approach. Surgeons then make incisions through the skin and underlying soft tissues, allowing access to the deeper structures. The dissection continues down to the muscle layers, where muscle compartments are identified and isolated. This meticulous approach ensures that the muscles are divided appropriately to facilitate the removal of the foot while preserving as much surrounding tissue as possible. During the procedure, neurovascular structures, including nerves and blood vessels, are carefully identified and isolated. It is crucial to separate the nerves from the arteries to prevent any pulsatile irritation that could lead to complications. The nerves are transected and allowed to retract into the surrounding soft tissues, while the blood vessels are ligated and divided to control bleeding. Following the removal of the forefoot, midfoot, talus, and calcaneus, the articular cartilage of the tibia is excised to prepare the site for closure. Finally, the remaining tendons and muscles are reattached to the bone, and the heel pad is rotated and sutured over the end of the tibia to provide a protective covering. This comprehensive approach ensures that the procedure is performed with precision, aiming for optimal outcomes for the patient.