Unsp fracture of left lower leg, subs for clos fx w nonunion

This code signifies a fracture of the lower leg on the left side, where the specific bone involved (tibia, fibula, or ankle) is not documented. The fracture is closed, meaning the skin is intact, and it has failed to heal properly, indicating a nonunion. This code is used when the patient is receiving follow-up care for this unhealed fracture.

Apply this code for patients presenting for ongoing treatment of a previously diagnosed, unspecified closed fracture of the left lower leg that has not united. This includes situations like cast changes, physical therapy, or surgical planning for nonunion repair, after the initial treatment phase. It is appropriate when the medical record lacks specificity regarding the exact bone fractured in the lower leg.

• Ensure documentation clearly states "left lower leg" and "nonunion" for a closed fracture.
• Verify this is a subsequent encounter, not the initial treatment for the fracture.
• If the specific bone (tibia or fibula) is documented, a more specific code from the S82.2 or S82.4 series should be used.