Unsp fracture of oth metacarpal bone, subs for fx w malunion

This code signifies a follow-up encounter for a fracture of an unspecified metacarpal bone (excluding the thumb) that has healed incorrectly, resulting in a malunion. The patient is no longer in the initial healing phase but is being seen for complications arising from the improper alignment of the bone fragments.

Use this code when documenting a patient visit for ongoing management or evaluation of a previously sustained metacarpal fracture (not the thumb) that has healed with a deformity or misalignment. This applies to situations where the malunion is causing functional impairment, pain, or cosmetic concerns, and the patient is past the initial treatment period.

• Ensure documentation clearly specifies "malunion" and that the fracture is of a metacarpal other than the thumb.
• This code requires an additional code to specify the laterality (left or right hand).
• Do not use this code for initial fracture treatment or for nonunion (failure to heal).