Nondisp intartic fx unsp calcaneus, subs for fx w nonunion

This code signifies a fracture within the joint space of the heel bone that has not shifted from its original position. Importantly, this specific encounter is for ongoing management of the fracture where normal healing has failed, leading to a nonunion.

This code is appropriate for follow-up visits, cast changes, or other treatment sessions for a patient previously diagnosed with a nondisplaced intraarticular calcaneal fracture. It should be used when documentation explicitly states that the fracture is not healing as expected and has progressed to a nonunion.

• Ensure documentation clearly specifies "nonunion" for the calcaneal fracture.
• Verify the fracture is intraarticular and nondisplaced.
• Confirm this is a subsequent encounter, not the initial treatment.