Nondisp oblique fx shaft of unsp ulna, 7thM

This code describes a situation where a patient has a non-displaced oblique fracture of the shaft of the ulna, which was initially an open fracture (Type I or II), and is now experiencing nonunion during a subsequent encounter. Nonunion indicates that the bone fragments are not healing together as expected.

This code is used when documenting follow-up care for an open ulnar shaft fracture that has failed to heal properly. It applies to patients presenting for continued management of this specific type of fracture complication, such as for evaluation of delayed healing or surgical intervention for nonunion.

• Ensure documentation clearly specifies "nonunion" and that the initial fracture was an "open fracture type I or II."
• Verify the encounter is "subsequent" and not the initial treatment for the fracture.
• Confirm the fracture is of the "shaft" of the ulna and is "nondisplaced" and "oblique."