Displ commnt fx shaft of ulna, unsp arm, 7thC

This code signifies a severe break in the main part of the ulna bone, where the bone has shattered into multiple fragments and is out of alignment. The fracture is exposed to the outside environment, indicating a significant soft tissue injury and high risk of infection.

This code is appropriate for initial treatment encounters of patients presenting with a comminuted ulnar shaft fracture that is visibly open, classified as Gustilo-Anderson Type IIIA, IIIB, or IIIC. This typically occurs due to high-energy trauma, such as motor vehicle accidents or falls from significant heights, where the bone has pierced the skin.

• Ensure the documentation clearly specifies "comminuted" and "displaced" for the ulnar shaft fracture.
• Verify the Gustilo-Anderson classification (IIIA, IIIB, or IIIC) for the open fracture type.
• This "C" seventh character indicates an initial encounter for an open fracture, not subsequent care.