Disp fx of unsp tibial spine, subs for clos fx w nonunion

This code signifies a fracture of the tibial spine (a bony prominence on the tibia within the knee joint) that is no longer in its anatomical alignment. The fracture is currently in a state of nonunion, meaning it has failed to heal after a typical period, and the bone is not exposed to the outside environment. This code is used for follow-up care of this specific type of unhealed fracture.

Apply this code for a patient presenting for ongoing management of a previously diagnosed, displaced, closed tibial spine fracture that has not united. This includes scenarios such as follow-up appointments, imaging to assess nonunion progression, or preparation for surgical intervention to address the nonunion. It is appropriate when the initial injury has already occurred and the focus of the encounter is the persistent nonunion.

• Ensure documentation clearly states "nonunion" and "displaced" for a tibial spine fracture.
• Verify the encounter is for subsequent care, not the initial treatment of the fracture.
• Confirm the fracture is closed; open fractures would require a different seventh character.