Unsp fx lower end of left ulna, init for opn fx type 3A/B/C

This code signifies an unspecified fracture of the distal (lower) end of the ulna in the left arm. It specifically indicates an open fracture, classified as Type IIIA, IIIB, or IIIC, meaning there is a significant soft tissue injury and communication between the fracture site and the external environment.

Use this code when documentation confirms an open fracture of the left distal ulna, but the specific type of fracture (e.g., transverse, oblique) is not detailed. This code is appropriate for the initial treatment of severe open fractures where extensive soft tissue damage, contamination, or vascular/nerve injury is present.

• Ensure the documentation clearly specifies "left ulna" and "lower end" or "distal ulna."
• Verify the "initial encounter" status and the Gustilo-Anderson classification of Type IIIA, IIIB, or IIIC for the open fracture.
• Do not use this code if the fracture type (e.g., transverse, comminuted) is specified; instead, select a more specific code.