Disp fx of nk of 1st MC bone, unsp hand, 7thP

This code indicates a fracture of the neck of the first metacarpal bone (thumb) that has healed improperly, resulting in a deformity (malunion). The fracture was displaced, meaning the bone fragments were not in their normal alignment at the time of the initial injury. This specific code is used during follow-up care for this malunited fracture.

Apply this code when a patient presents for ongoing treatment or evaluation of a previously sustained, displaced fracture of the first metacarpal neck that has healed in a misaligned position. This includes scenarios where the patient is undergoing physical therapy, further imaging to assess the malunion, or discussing potential corrective surgery. It is appropriate for any encounter after the initial treatment phase where the malunion is the focus of care.

• Ensure documentation clearly states "malunion" and specifies the "neck of the first metacarpal."
• Verify the encounter is for subsequent care, not the initial treatment of the fracture.
• Confirm the fracture was originally "displaced" as this is a specific characteristic of the code.