CPT® Code 27556

Open treatment of knee dislocation, includes internal fixation, when performed; without primary ligamentous repair or augmentation/reconstruction

The CPT® Code 27556 refers to the open treatment of a knee dislocation, which is a significant injury involving the displacement of the knee joint. This procedure includes internal fixation when necessary but does not involve primary ligamentous repair or augmentation/reconstruction. Knee dislocations can be categorized into five types: anterior, posterior, lateral, medial, and rotary, each varying in the specific ligaments affected and the severity of the injury. The treatment approach is tailored based on these factors. During the procedure, a surgical incision is made over the knee, allowing access to the joint capsule. The surgeon then incises the capsule to expose the injury site, which is meticulously cleared of any debris, including loose osteochondral fragments that may hinder proper healing. Following this, the dislocated knee is reduced, meaning the bones are realigned into their proper position, and this alignment is confirmed through radiographic imaging. The stability of the knee is subsequently assessed, and if deemed necessary, internal fixation devices are applied to ensure that the knee remains properly aligned and stable during the healing process. Finally, the surgical site is irrigated to prevent infection, and the incision is closed with sutures, completing the procedure.