Fx unsp metatarsal bone(s), l foot, subs for fx w malunion

This code signifies a fracture of an unspecified metatarsal bone in the left foot that has previously been treated but has healed in an anatomically incorrect or misaligned position. This malunion can lead to ongoing pain, functional impairment, and altered biomechanics of the foot.

Apply this code when documenting a patient presenting for follow-up care of a left metatarsal fracture that has healed with malunion, and the malunion itself is the focus of the current encounter. This includes scenarios where the patient is experiencing symptoms related to the malunion or is being evaluated for corrective procedures.

• Ensure documentation clearly specifies "left foot" and "malunion" as the healing complication.
• This code is for a subsequent encounter, meaning the initial fracture treatment has already occurred.
• If the specific metatarsal bone is known, a more specific code from the S92.3- series should be used.