Oth fracture of unsp lower leg, subs for clos fx w nonunion

This code signifies a fracture in an unspecified part of the lower leg, excluding the ankle or malleoli, that is not healing properly (nonunion) and is being treated in a subsequent encounter. The fracture itself is closed, meaning the skin remains intact over the injury site.

Apply this code when a patient presents for follow-up care of a previously diagnosed lower leg fracture (not ankle/malleolus) that has failed to unite. This is appropriate for ongoing management of a closed fracture with documented nonunion.

• Ensure documentation clearly states "nonunion" and specifies a "subsequent encounter."
• Verify the fracture location is in the lower leg but not specifically the ankle or malleolus.
• Confirm the fracture was initially closed; if it was open, a different code would be necessary.