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

This code signifies a non-displaced fracture affecting a segment of the ulna's shaft in the left arm. It specifically indicates that this is a follow-up encounter for an initial open fracture, classified as either Type I or Type II, which has unfortunately failed to heal properly (nonunion).

Apply this code when documenting ongoing care for a patient with a left ulnar shaft fracture that was initially open, but is now stable and not displaced, and has not united. This would be used during subsequent visits for monitoring, treatment of the nonunion, or preparation for further intervention.

• Ensure documentation clearly specifies "nondisplaced" and "segmental" for the ulnar shaft fracture.
• Verify the original injury was an open fracture (Type I or II) and that nonunion is explicitly stated.
• This code is for subsequent encounters; an initial encounter for this specific fracture and nonunion would use a different code.