Nondisp fx of nk of 4th MC bone, l hand, 7thP

This code signifies a fracture of the neck of the fourth metacarpal bone in the left hand that was initially nondisplaced but has subsequently healed improperly, resulting in a malunion. This indicates a previous injury where the bone fragments did not align correctly during the healing process.

Use this code when a patient presents for follow-up care of a previously treated nondisplaced fourth metacarpal neck fracture of the left hand, and imaging or clinical assessment confirms that the fracture has healed with a malunion. This applies to encounters for ongoing management, evaluation of complications, or planning for corrective procedures related to the malunion.

• Ensure documentation clearly specifies "malunion" and not "nonunion" or "delayed healing" for accurate code selection.
• Verify the laterality (left hand) and the specific bone (fourth metacarpal neck) are documented.
• This code requires an additional code for any associated external cause of the injury.