Oth fx shaft of unsp ulna, 7thM

This code signifies a nonunion of an open fracture (Type I or II) involving the shaft of the ulna, where the specific location of the fracture on the shaft is not documented. Nonunion indicates that the bone has failed to heal completely after a previous injury. This code is used during subsequent encounters for ongoing management of this persistent fracture.

Apply this code when a patient presents for follow-up care, treatment, or evaluation of an open ulnar shaft fracture that has not healed. This includes situations where surgical intervention for nonunion is being planned or has already occurred, or when conservative management for the nonunion is ongoing. It is appropriate when the initial injury was an open fracture classified as Type I or II.

• Ensure documentation clearly states "nonunion" and specifies an open fracture type I or II.
• Verify that the fracture is located on the shaft of the ulna, even if the exact segment is unspecified.
• This code is for subsequent encounters only; do not use for the initial treatment of the fracture.