Oth fx upr end unsp rad, subs for opn fx type I/2 w nonunion

This code signifies a nonunion of an unspecified radius fracture, specifically involving the upper end, that was initially an open fracture of type I or II. "Nonunion" indicates that the bone has failed to heal adequately after the initial injury and treatment. The "subsequent encounter" aspect means this code is used for ongoing care related to this unhealed fracture.

Use this code for patients presenting for follow-up care, evaluation, or treatment of an open upper radius fracture (Type I or II) that has not healed and is now considered a nonunion. This applies when the patient is beyond the initial healing phase and the fracture site shows no signs of progression to union. It is appropriate for scenarios such as surgical planning for revision, continued conservative management, or assessment of nonunion status.

• Ensure documentation clearly specifies "nonunion" and the initial open nature of the fracture (Type I or II).
• Verify the fracture location is the "upper end of the radius" and laterality is unspecified if not documented.
• Always pair with an external cause code if applicable, especially for the initial injury.