Oth fx upr end unsp ulna, 7thR

This code signifies a previously sustained, complex open fracture of the upper portion of the ulna (e.g., olecranon or coronoid process) that is now healing in a misaligned position. The initial injury was severe, involving significant soft tissue damage as categorized by Gustilo-Anderson type IIIA, IIIB, or IIIC. The current encounter focuses on the management of this malunion.

This code is appropriate for follow-up visits where a patient is being treated for a malunion of a prior, severe open fracture of the proximal ulna. This includes scenarios where surgical correction of the malunion is being planned or performed, or during conservative management of the malunion. It indicates that the initial injury was an open fracture with extensive soft tissue involvement.

• Always use this code as a subsequent encounter code, never for the initial treatment of the fracture.
• Ensure documentation clearly specifies malunion and the Gustilo-Anderson classification (IIIA, IIIB, or IIIC) of the original open fracture.
• Do not use this code for nonunion; a different code would be required for that complication.