Oth fx shaft of right ulna, init for opn fx type 3A/B/C

This code signifies a fracture located in the main body (shaft) of the right ulna that is not further specified as a greenstick, transverse, oblique, or spiral fracture. Critically, it indicates an open fracture where the bone has broken through the skin, classified as a severe type IIIA, IIIB, or IIIC injury according to the Gustilo-Anderson classification, and is being treated for the first time.

Use this code for a patient presenting with a newly diagnosed, non-specific shaft fracture of the right ulna that involves a significant open wound exposing the bone. This applies when the injury is classified by the treating physician as a Gustilo-Anderson type IIIA, IIIB, or IIIC open fracture, and the patient is receiving initial active treatment for this specific injury.

• Ensure documentation clearly specifies "right ulna shaft" and an "open fracture" with a Gustilo-Anderson type IIIA, IIIB, or IIIC classification.
• Verify this is the patient's initial encounter for active treatment of this specific fracture, not a follow-up or subsequent care.
• Do not use for closed fractures, other specific fracture types (e.g., greenstick), or fractures of the distal or proximal ulna.