Disp fx of post pro of left talus, subs for fx w nonunion

This code signifies a fracture of the posterior process of the left talus that has not healed properly, meaning the bone fragments have not united. The fracture is also displaced, indicating the bone pieces are out of their normal alignment. This specific code is used when the patient is receiving follow-up care for this nonunion.

Use this code when a patient presents for ongoing treatment of a previously diagnosed displaced fracture of the posterior process of the left talus, and the fracture has failed to heal. This includes situations where the patient is undergoing conservative management, cast changes, or surgical intervention to address the nonunion. It is appropriate for any encounter after the initial treatment phase where nonunion is the primary focus of care.

• Ensure documentation clearly states "nonunion" and "displaced" for the posterior process of the left talus.
• Verify this is a subsequent encounter, not the initial treatment or a sequela of a healed fracture.
• Always pair with an external cause code if the cause of the fracture is known and relevant to the encounter.