Disp fx of 4th metatarsal bone, l ft, subs for fx w nonunion

This code signifies a fracture of the fourth metatarsal bone in the left foot that is no longer in its anatomical alignment. The fracture has failed to heal properly after an initial treatment, and the patient is presenting for ongoing management of this nonunion.

Apply this code when a patient with a previously diagnosed and treated displaced fracture of the left fourth metatarsal presents for follow-up care, and documentation clearly indicates that the fracture has not united. This is appropriate for subsequent encounters where the nonunion is the primary focus of the visit.

• Ensure documentation specifies "displaced" and "nonunion" for the fourth metatarsal of the left foot.
• Confirm this is a "subsequent encounter" and not the initial treatment for the fracture.
• Do not use if the fracture is healing normally or if the nonunion is not explicitly documented.