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

This code signifies a fracture of the shaft of the first metacarpal bone (thumb) that has healed in an unsatisfactory position, resulting in a deformity (malunion). The specific hand affected is not documented. This code is used for follow-up care after the initial treatment of the fracture.

Apply this code when a patient presents for ongoing management of a malunited fracture of the first metacarpal shaft, where the initial injury occurred on an unspecified hand. This would include scenarios such as evaluation for corrective surgery, physical therapy for functional deficits due to the malunion, or monitoring of the malunion's stability.

• Ensure documentation clearly states "malunion" and specifies the shaft of the first metacarpal.
• Verify that the encounter is subsequent to the initial fracture treatment.
• If the specific hand (left or right) is documented, a more specific code should be selected.