CPT® Code 27550

Knee dislocation is classified as a significant and relatively uncommon injury that necessitates prompt recognition and treatment to prevent complications, such as vascular impairment. This condition occurs when the bones of the knee joint are displaced from their normal alignment, which can lead to severe pain, swelling, and potential damage to surrounding structures, including blood vessels and nerves. In the absence of timely intervention, vascular impairment may occur, which is why it is critical to assess peripheral pulses immediately upon diagnosis. If vascular impairment is detected, the physician may proceed with reduction of the dislocation without the need for pre-reduction radiographs. Conversely, if peripheral pulses are intact, the physician may opt to obtain separate radiographs to evaluate the extent of the injury before proceeding with treatment. The reduction process typically involves the application of longitudinal traction to realign the dislocated joint. After the successful reduction, a follow-up set of radiographs may be taken to confirm proper alignment. Post-reduction care includes splinting the leg and providing the patient with instructions to ice and elevate the knee to manage swelling and promote healing. The CPT® code 27550 is specifically utilized when the dislocation is treated without the use of anesthesia, while the code 27552 is designated for cases where anesthesia is administered during the procedure.