Nondisp commnt fx shaft of ulna, unsp arm, 7thH

This code describes a comminuted fracture of the ulna shaft that is not displaced, meaning the bone fragments are still in their anatomical position. It specifically indicates a subsequent encounter for an open fracture (Type I or II) that is experiencing delayed healing.

Use this code for follow-up visits where a patient with a previously diagnosed open comminuted ulnar shaft fracture (Gustilo-Anderson Type I or II) is being treated for delayed union. This applies when the fracture site is not healing at the expected rate, but there is no evidence of nonunion or malunion yet.

• Ensure documentation specifies "nondisplaced" and "comminuted" for the ulna shaft fracture.
• Verify the original injury was an "open fracture type I or II" and that the current encounter is for "delayed healing."
• Do not use this code if the fracture is healing normally, or if it has progressed to nonunion or malunion.