Unsp fx lower end of r tibia, subs for clos fx w malunion

This code signifies a follow-up encounter for an unspecified fracture located at the lower end of the right tibia. The fracture was initially closed, meaning the skin remained intact, but has subsequently healed in an unsatisfactory position, known as a malunion.

Use this code when a patient presents for ongoing management or evaluation of a previously treated, closed right distal tibia fracture that has healed with a deformity or misalignment. This applies to situations where the malunion is being monitored, or further intervention (e.g., osteotomy) is being planned or performed due to the malunion.

• Requires a seventh character of 'P' for subsequent encounter with malunion.
• Ensure documentation clearly specifies "right tibia" and "lower end" or "distal" to support this specific site.
• Distinguish from nonunion ('N') where the fracture has failed to heal completely.