Nondisp transverse fx shaft of unsp ulna, 7thM

This code describes a situation where a patient has a transverse fracture of the shaft of an unspecified ulna that is not displaced. The fracture was initially an open fracture (Type I or II), and during a subsequent encounter, it is noted that the bone has failed to heal properly, resulting in a nonunion.

This code is used when documenting follow-up care for an ulnar shaft fracture that was initially open and is now complicated by nonunion. It applies when the fracture is transverse and has not shifted out of alignment. This code would be appropriate for patients undergoing treatment for the nonunion, such as bone grafting or revision surgery.

• Ensure documentation clearly specifies "nondisplaced," "transverse fracture of shaft," and "unspecified ulna."
• Verify the initial injury was an "open fracture type I or II" and that "nonunion" is explicitly stated for the subsequent encounter.
• Always sequence this code after the appropriate external cause code, if applicable, to describe how the injury occurred.