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

This code describes a situation where a patient has a non-displaced fracture affecting a segment of the ulna bone in their right forearm. This particular encounter is for follow-up care of 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 a malunion.

Use this code for subsequent encounters when a patient with a previously treated severe open segmental ulna shaft fracture of the right arm presents with evidence of malunion. This applies to follow-up visits for monitoring, planning further intervention, or managing complications related to the malunion.

• Ensure documentation clearly specifies "right arm," "ulna shaft," "segmental," and "nondisplaced" for the fracture.
• Verify the initial open fracture was Type IIIA, IIIB, or IIIC and that malunion is explicitly documented.
• Confirm this is a subsequent encounter, not the initial treatment of the malunion or the acute fracture.