Displaced comminuted fx shaft of ulna, left arm, init

This code signifies a severe break in the main part of the left ulna bone, where the bone has shattered into multiple fragments and the pieces are no longer in their normal alignment. The skin over the fracture remains intact, indicating a closed injury.

Apply this code for patients presenting with a newly diagnosed, comminuted, and displaced fracture of the left ulnar shaft. This is appropriate for the initial treatment phase of such an injury, prior to definitive surgical or non-surgical management.

• Confirm the fracture is specifically of the ulnar shaft, not the proximal or distal ends.
• Verify documentation explicitly states "displaced" and "comminuted" for accurate coding.
• Ensure "initial encounter" is appropriate; subsequent care will require different seventh characters.