Disp fx of lateral cuneiform of l ft, subs for fx w nonunion

This code signifies a displaced break in the lateral cuneiform bone, located on the outer side of the midfoot, in the left foot. The fracture has failed to heal properly, resulting in a nonunion, and the patient is presenting for follow-up care or treatment related to this ongoing issue.

Apply this code when documenting a patient encounter for a previously diagnosed, displaced fracture of the left lateral cuneiform that has not united. This would include visits for cast changes, physical therapy, surgical planning for nonunion repair, or evaluation of nonunion progression.

• Ensure documentation clearly specifies "left" foot and "lateral" cuneiform.
• Confirm the fracture is explicitly described as "displaced" and has a "nonunion."
• This is a subsequent encounter code; do not use for initial injury treatment.