Bent bone of unsp ulna, init for opn fx type 3A/B/C

This code signifies a fracture of the ulna where the bone is bent or angulated, and the skin and soft tissues are significantly compromised, exposing the bone. This type of open fracture (Gustilo-Anderson Type IIIA, IIIB, or IIIC) indicates a high-energy injury with substantial soft tissue damage, contamination, or even bone loss. It is used for the initial treatment of such an injury.

This code is appropriate when a patient presents for the first time with an open ulna fracture, specifically documented as a bent bone, and the orthopedic surgeon or emergency physician classifies the open wound as Gustilo-Anderson Type IIIA, IIIB, or IIIC. This would typically involve surgical debridement and stabilization.

• Ensure documentation clearly specifies "bent bone" or "angulated fracture" of the ulna.
• Verify the Gustilo-Anderson classification (IIIA, IIIB, or IIIC) is explicitly stated in the medical record.
• Confirm this is the initial encounter for the fracture treatment. Subsequent care would use a different encounter character.