Torus fx upper end of left radius, subs for fx w nonunion

This code signifies a specific type of fracture affecting the upper part of the left radius bone, where the bone has buckled or bulged rather than completely breaking through. The "subsequent encounter" indicates that the patient is receiving ongoing care for this injury, and "nonunion" means the fracture has failed to heal properly despite treatment efforts.

Apply this code when documenting follow-up visits for a patient with a left radial head or neck torus fracture that has not united. This would include encounters for continued monitoring, assessment of healing progress (or lack thereof), or planning for further interventions due to the nonunion.

• Ensure the documentation clearly specifies a torus fracture of the upper end of the left radius.
• Verify that the encounter is for follow-up care and that the fracture has been explicitly diagnosed as nonunion.
• Pair this code with external cause codes (V, W, X, Y) to describe the circumstances of the injury, if known and applicable to the encounter.