Torus fx lower end of left ulna, subs for fx w nonunion

This code describes a specific type of incomplete fracture, known as a torus or buckle fracture, affecting the lower portion of the left ulna. It indicates that the patient is receiving ongoing care for this fracture, which has unfortunately failed to heal properly and is now considered a nonunion.

Use this code for follow-up encounters where a patient with a previously diagnosed torus fracture of the distal left ulna is being treated for a nonunion. This includes situations where surgical intervention for the nonunion is being planned or performed, or during ongoing conservative management of the nonunion.

• Ensure documentation clearly states "nonunion" for the left ulnar fracture.
• Verify the fracture location is specifically the lower end (distal) of the ulna.
• Confirm this is a subsequent encounter, not the initial treatment for the fracture.