Oth fx upper end of left ulna, init for opn fx type 3A/B/C

This code signifies a fracture of the upper portion of the left ulna that is not specifically classified as an olecranon or coronoid process fracture. It indicates an open fracture where the skin and soft tissues are severely damaged, exposing the bone, and the patient is receiving initial treatment for this injury.

Apply this code for patients presenting with a newly diagnosed, non-specific fracture of the proximal left ulna that meets the criteria for an open fracture of Gustilo-Anderson type IIIA, IIIB, or IIIC. This is appropriate for the initial surgical or non-surgical management of such a severe injury.

• Ensure documentation clearly specifies "left ulna" and "upper end" to differentiate from other forearm fractures.
• Confirm the open fracture type (IIIA, IIIB, or IIIC) is explicitly stated or clearly inferable from the physician's notes regarding soft tissue damage and bone exposure.
• This "initial encounter" code is only used for the period of active treatment for the fracture. Subsequent care will require a different encounter character.