Oth disp fx of base of 1st MC bone, l hand, 7thP

This code signifies a fracture at the base of the first metacarpal (thumb) bone in the left hand that has healed improperly, resulting in a malunion. The fracture was initially displaced, meaning the bone fragments were not in their normal alignment. This specific code is used when the patient is receiving ongoing treatment for this previously fractured and now malunited bone.

Apply this code for follow-up encounters where a patient is being managed for a left thumb metacarpal base fracture that has healed in an unsatisfactory position. This includes scenarios such as evaluating the extent of malunion, planning corrective surgery (e.g., osteotomy), or managing chronic pain or functional limitations directly attributable to the malunion. It is appropriate for any subsequent visit after the initial treatment of the fracture, once malunion has been identified.

• Ensure documentation clearly specifies "left hand" and "base of first metacarpal" to support this precise anatomical site.
• Confirm the fracture is described as "displaced" and that the current encounter addresses a "malunion" for accurate code selection.
• This code indicates a subsequent encounter; do not use for the initial treatment of the fracture or for nonunion.