Oth fx upper end l ulna, subs for opn fx type I/2 w malunion

This code describes a situation where a patient has sustained a fracture to the upper portion of their left ulna, specifically an open fracture (Type I or II) that has healed improperly, resulting in malunion. This indicates a follow-up visit for ongoing management of this complicated healing process.

This code is appropriate for subsequent encounters when a patient is being treated for an open fracture of the proximal left ulna that has developed malunion. This includes follow-up appointments for monitoring, physical therapy, or surgical planning related to the malunion. It should be used after the initial treatment of the fracture has occurred.

• Ensure documentation clearly specifies "malunion" and the "subsequent encounter" status for an open fracture type I or II.
• Verify the fracture location is the "upper end" of the ulna and laterality is "left."
• Do not use for initial treatment or for nonunion; specific codes exist for those scenarios.