Disp fx of base of metacarpal bone, subs for fx w malunion

This code signifies a previously treated fracture of the base of a metacarpal bone (excluding the thumb) that has healed improperly, resulting in a malunion. The fracture itself was displaced, meaning the bone fragments were not in their normal alignment. This specific code is used for follow-up care related to this malunited fracture.

Apply this code when a patient presents for ongoing management of a malunited fracture of the base of a metacarpal (other than the thumb) that was initially displaced. This would include evaluations, physical therapy, or discussions regarding corrective surgery for the malunion. It is used after the initial healing phase, when the malunion has been identified.

• Ensure the documentation clearly states a malunion of a displaced fracture of the base of a non-thumb metacarpal.
• Verify this is a subsequent encounter for the malunion, not the initial treatment of the fracture.
• Confirm the laterality (left/right) is documented and select the appropriate specific code.