Unsp fx low end unsp ulna, 7thM

This code signifies a nonunion of an unspecified fracture of the lower end of the ulna, which was initially an open fracture classified as Type I or II. Nonunion indicates that the bone has failed to heal completely after the initial injury and subsequent treatment.

Apply this code when documenting a patient's follow-up visit for an unhealed open fracture (Type I or II) of the distal ulna. This is appropriate when the provider explicitly diagnoses a nonunion of the fracture.

• Ensure documentation clearly states "nonunion" and specifies the fracture as an open Type I or II.
• Verify the fracture location is the lower end of the ulna; "unspecified" refers to the laterality.
• This code is for subsequent encounters, not the initial treatment of the fracture.