Disp fx of neck of metacarpal bone, subs for fx w malunion

This code signifies a previously treated fracture of the neck of a metacarpal bone (excluding the thumb) that has healed in an anatomically incorrect position, resulting in a malunion. The patient is presenting for follow-up care related to this complication, rather than initial treatment or routine healing.

Apply this code when a patient presents with a documented malunion of a metacarpal neck fracture (other than the first metacarpal) during a subsequent encounter. This would typically involve assessment of function, pain management, or consideration of corrective surgery for the malunion.

• Ensure documentation clearly specifies "malunion" and not just delayed healing or nonunion.
• Verify the specific metacarpal involved to confirm it's not the thumb (first metacarpal).
• This code is for subsequent encounters; an initial encounter for the malunion would use a different code.