Displ seg fx shaft of ulna, r arm, 7thR

This code describes a specific type of fracture involving the shaft of the right ulna, where the bone is broken into multiple pieces (segmental) and the fragments are not properly aligned (displaced). It further specifies that this is an open fracture (meaning the skin was broken) of a severe type (IIIA, IIIB, or IIIC) and is being treated during a subsequent encounter for a complication of healing, specifically malunion (healing in an incorrect position).

This code is used when a patient presents for follow-up care or treatment of a right ulnar shaft fracture that was initially an open fracture of a severe type, and the fracture has healed or is healing in a misaligned position. It indicates that the current encounter is addressing the malunion as a complication of the original injury.

• Ensure documentation clearly specifies "right arm" and "ulna shaft" for laterality and bone.
• Verify the original fracture was an open fracture type IIIA, IIIB, or IIIC, and that the current encounter addresses malunion.
• This code is for subsequent encounters, not the initial treatment of the fracture.