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

This code signifies a follow-up encounter for an open fracture of the lower end of the right tibia, specifically an open fracture type I or II, that has healed incorrectly, resulting in a malunion. The exact nature of the fracture at the lower end of the tibia is not specified beyond its location.

This code is appropriate for subsequent encounters when a patient is being treated for a malunion of a previously sustained open fracture (Type I or II) of the distal right tibia. This would include scenarios such as surgical correction of the malunion, cast changes, or ongoing physical therapy related to the improperly healed fracture.

• Ensure documentation clearly specifies "malunion" and a "subsequent encounter" for an open fracture type I or II.
• Verify the laterality is "right" and the fracture location is the "lower end of the tibia."
• Do not use this code for initial encounters or for nonunion, which has a distinct code.