Nondisp transverse fx shaft of l ulna, 7thN

This code describes a situation where a patient has a non-displaced transverse fracture of the shaft of their left ulna, which was originally an open fracture (Type IIIA, IIIB, or IIIC). The current encounter is for the management of a nonunion, meaning the fracture has failed to heal properly.

This code is appropriate for subsequent encounters when a patient with a previously diagnosed open transverse ulnar shaft fracture (left side, non-displaced) is being treated for a nonunion. This would include follow-up appointments, surgical interventions for nonunion, or other management strategies aimed at promoting healing.

• Ensure documentation clearly specifies "nonunion" and the original open fracture type (IIIA, IIIB, or IIIC).
• Verify the fracture is of the shaft of the ulna and is transverse and nondisplaced.
• Confirm this is a subsequent encounter for the nonunion, not the initial treatment of the fracture.