Disp fx of pisiform, left wrist, subs for fx w malunion

This code signifies a left wrist injury involving a pisiform bone fracture that has healed improperly, resulting in a malunion. The fracture was initially treated, and this encounter addresses the ongoing management or complications related to the bone's incorrect alignment during healing.

Apply this code when a patient presents for follow-up care, evaluation of persistent symptoms, or treatment of complications stemming from a previously treated, displaced pisiform fracture in the left wrist that has healed in a misaligned position. This includes scenarios where surgical correction of the malunion is being planned or performed.

• Ensure documentation clearly states "malunion" and specifies the left wrist and pisiform bone.
• Verify that this is a subsequent encounter, not the initial treatment for the fracture.
• Do not use this code for nonunion, which indicates a complete failure of the bone to heal.