Unstable burst fx T11-T12 vertebra, subs for fx w nonunion

This code signifies an unstable burst fracture affecting the T11 or T12 thoracic vertebrae, meaning the vertebral body has been severely compressed and shattered, often with retropulsion of bone fragments into the spinal canal. The "unstable" designation indicates a high risk of neurological compromise or further spinal deformity. The "subsequent encounter for fracture with nonunion" specifies that this is not the initial treatment for the fracture, and the bone has failed to heal properly.

This code is appropriate for follow-up encounters where a patient with a previously diagnosed unstable burst fracture of T11 or T12 is being treated for a confirmed nonunion. This includes situations where surgical intervention for nonunion is being planned or performed, or during ongoing management of the unhealed fracture. It would also be used for documentation of conservative management of a nonunion.

• Ensure documentation clearly states "unstable burst fracture" and specifies T11 or T12.
• Verify that the encounter is for a subsequent visit and that nonunion of the fracture is explicitly documented.
• Do not use this code for initial encounters or for fractures that are healing normally.