Nondisp pilon fx unsp tibia, subs for clos fx w nonunion

This code describes a subsequent encounter for a fracture of the pilon, which is the weight-bearing surface of the distal tibia, that is not displaced. The fracture is currently undergoing treatment for a nonunion, meaning the bone fragments are failing to heal together. This specific code indicates the fracture was initially treated non-surgically (closed treatment).

Use this code for follow-up visits where a patient with a previously diagnosed nondisplaced pilon fracture of an unspecified tibia is being managed for a nonunion. This applies when the initial treatment was conservative (e.g., casting, splinting) and the fracture has not healed as expected. This code would be appropriate for ongoing monitoring, assessment of nonunion progression, or planning for further intervention.

• Ensure documentation clearly states "nonunion" and "nondisplaced" for the pilon fracture.
• Verify that the encounter is for subsequent care of the fracture, not the initial treatment.
• Confirm the fracture was treated closed; if open treatment was performed, a different code would be necessary.