Nondisp seg fx shaft of ulna, l arm, 7thR

This code describes a left ulna fracture that involves a segment of the bone shaft, meaning it's broken in at least two places along its length, but the bone fragments are still in their normal alignment. This specific encounter is for an open fracture (where the bone broke through the skin) that was initially classified as a severe type IIIA, IIIB, or IIIC, and has now healed incorrectly, resulting in malunion.

Use this code when documenting follow-up care for a patient with a previously treated open segmental ulna shaft fracture of the left arm that has developed malunion. This applies to situations where the initial injury was a high-energy trauma causing significant soft tissue damage, as indicated by the open fracture type. The patient is no longer in the initial healing phase, but rather addressing complications of healing.

• Confirm the fracture is specifically of the ulna shaft and is segmental, not just a single break.
• Verify the encounter is for a subsequent visit addressing malunion, not initial treatment or routine follow-up for uncomplicated healing.
• Ensure documentation clearly specifies the left arm and the initial open fracture type (IIIA, IIIB, or IIIC).