Disp fx of nk of 2nd MC bone, l hand, subs for fx w malunion

This code describes a left-hand injury involving a previously treated fracture of the neck of the second metacarpal bone that has healed improperly, resulting in a malunion. The fracture itself was displaced, meaning the bone fragments were not in their normal alignment at the time of the initial injury. This code is used for follow-up care related to this malunited fracture.

Use this code for patients presenting for evaluation or treatment of a malunion of a displaced fracture of the neck of the second metacarpal bone in the left hand. This would include scenarios such as surgical correction of the malunion, physical therapy for functional deficits due to the malunion, or follow-up imaging to assess the malunion. It indicates that the patient is in the healing phase where complications like malunion are being addressed.

• Ensure documentation specifies "left hand" and "second metacarpal neck" to support this specific code.
• Confirm the fracture is indeed a "malunion" and not a nonunion or delayed union, as these have different codes.
• Verify the encounter is "subsequent" for the fracture, indicating ongoing care after the initial treatment phase.