Unsp fx low end r tibia, subs for opn fx type I/2 w nonunion

This code signifies a non-healing fracture of the lower part of the right shin bone, where the initial injury was an open fracture (bone broke through the skin) classified as Type I or II. The patient is in a later stage of care, beyond the initial treatment, and the fracture has failed to unite.

Use this code for patients presenting for follow-up care, cast changes, or other subsequent treatments related to a previously diagnosed open Type I or II fracture of the distal right tibia that has not healed. This applies when the specific type of fracture (e.g., transverse, oblique) at the lower end of the tibia was not documented.

• Ensure documentation clearly states "nonunion" and specifies the "right tibia" and "lower end."
• Verify the original fracture was an "open fracture type I or II" and that this is a "subsequent encounter."
• Do not use for initial encounters or for closed fractures.