Disp fx of distal phalanx of l thm, subs for fx w nonunion

This code signifies a fracture of the furthest bone in the left thumb that has shifted out of its normal alignment. It specifically indicates that the fracture has failed to heal properly and the patient is presenting for ongoing management of this nonunion.

This code is appropriate when a patient is seen for follow-up care of a previously diagnosed displaced fracture of the left thumb's distal phalanx, and the physician documents that the fracture has not united. This would include scenarios where the patient is undergoing further treatment, such as surgical intervention or cast changes, for the nonunion.

• Ensure documentation clearly states "nonunion" and specifies the left thumb's distal phalanx.
• Verify the fracture is explicitly described as "displaced" to support this specific code.
• Confirm this is a subsequent encounter for the nonunion, not the initial treatment.