Oth fx upper end of left ulna, init for opn fx type I/2

This code signifies a fracture affecting the upper portion of the left ulna, excluding specific types like Monteggia or olecranon fractures, where the skin is broken but the wound is relatively clean and small (Type I or II open fracture). This indicates the initial treatment phase for such an injury.

Apply this code for a patient presenting with a newly diagnosed open fracture of the proximal left ulna, classified as Gustilo-Anderson Type I or II. This is appropriate when the patient is receiving their first definitive medical care for this specific injury.

• Ensure documentation clearly specifies "left" ulna and an "open" fracture type I or II.
• Verify this is the initial encounter for treatment; subsequent care would require a different encounter character.
• Distinguish from closed fractures or other specified fracture types of the upper ulna.