Unsp fx the lower end left rad, subs for clos fx w nonunion

This code signifies a persistent failure of a previously treated, non-displaced fracture at the distal end of the left radius to heal properly. The fracture was initially closed, meaning the skin remained intact, but the bone fragments have not united after a subsequent encounter. This indicates a complication in the healing process of the original injury.

Apply this code when documenting follow-up care for a patient whose left distal radial fracture, initially treated as closed, has failed to show signs of bony union. This would be used in scenarios where the physician is assessing the nonunion, planning further intervention, or managing the ongoing care of this specific complication.

• Ensure documentation clearly states "nonunion" and specifies the left radius.
• Verify the encounter is for follow-up care related to the nonunion, not the initial injury.
• Confirm the fracture was originally closed; open fractures have different coding pathways.