Disp fx of base of second metacarpal bone, left hand, 7thK

This code describes a fracture at the base of the second metacarpal bone in the left hand that has shifted out of its normal alignment. The fracture has failed to heal properly, indicating a nonunion, and the patient is presenting for follow-up care related to this ongoing issue.

This code is appropriate for documenting subsequent encounters for a patient with a previously diagnosed and treated displaced fracture of the left second metacarpal base, where the fracture has not united. This would include visits for ongoing management, evaluation of nonunion, or preparation for further intervention to address the nonunion.

• Ensure documentation clearly specifies "nonunion" and "displaced" for the left second metacarpal base.
• Verify this is a subsequent encounter, not the initial treatment for the fracture.
• Confirm the laterality is "left hand" to avoid coding errors.