Oth fx upr end l ulna, 7thR

This code signifies a malunion of a previously sustained open fracture of the proximal (upper) end of the left ulna, specifically an open fracture classified as Type IIIA, IIIB, or IIIC. Malunion indicates that the bone has healed in an incorrect or deformed position, impacting function.

Use this code when documenting a patient presenting for follow-up care, evaluation, or treatment of a malunited open fracture of the upper left ulna, where the original injury was a severe open fracture. This applies to situations where the fracture has healed, but the alignment is poor.

• Ensure documentation clearly specifies "malunion" and the "subsequent encounter" for the fracture.
• Verify the original open fracture was classified as Type IIIA, IIIB, or IIIC based on Gustilo-Anderson classification.
• Confirm the fracture location is the "upper end" of the "left ulna."