Fx unsp metatarsal bone(s), unsp ft, subs for fx w nonunion

This code signifies a fracture of one or more metatarsal bones in an unspecified foot that has failed to heal properly after initial treatment. The patient is presenting for ongoing management of this persistent nonunion.

Apply this code when a patient returns for follow-up care of a metatarsal fracture where the bone fragments have not united, and the specific metatarsal and foot are not documented. This is appropriate for subsequent visits after the initial treatment of the fracture.

• Ensure documentation clearly states "nonunion" and that it's a subsequent encounter for the fracture.
• Avoid using this code if the specific metatarsal bone (e.g., first, second) or the laterality (left, right) of the foot is known; instead, use a more specific code.
• Always review the medical record for any additional complications or associated conditions that may require separate coding.