Oth physl fx low end ulna, left arm, subs for fx w malunion

This code describes a situation where a patient has previously sustained a growth plate fracture at the lower end of their left ulna, and during a subsequent encounter, this fracture is found to have healed improperly, resulting in a malunion. This indicates a complication of the initial injury where the bone fragments have united in an anatomically incorrect position.

Use this code for follow-up visits or treatment encounters for a patient with a documented malunion of a physeal fracture of the distal left ulna. This would apply when assessing the extent of the malunion, planning corrective surgery, or managing ongoing symptoms related to the improper healing.

• Ensure documentation clearly specifies "malunion" and not "nonunion" or "delayed healing."
• Verify the fracture location is the "lower end of ulna" and laterality is "left arm."
• This code is for subsequent encounters; an initial encounter for the fracture would use a different code.