Unsp fx third MC bone, right hand, subs for fx w nonunion

This code signifies a fracture of the third metacarpal bone in the right hand, where the specific type of fracture is not documented. It indicates that the patient is presenting for follow-up care for this fracture, and the bone has failed to heal properly, resulting in a nonunion.

This code is appropriate for subsequent encounters when a patient with a previously diagnosed, but unspecified, right third metacarpal fracture is being treated for a confirmed nonunion. This would include situations where surgical intervention for the nonunion is being planned or performed, or during ongoing conservative management of the nonunion.

• Ensure documentation clearly states "nonunion" for the right third metacarpal fracture.
• Verify that this is a subsequent encounter, not the initial treatment for the fracture.
• If the specific type of fracture (e.g., transverse, oblique) is known, a more specific code should be used.