Nondisp fx of ant pro of r calcaneus, subs for fx w malunion

This code describes a situation where the front part of the right heel bone (calcaneus) was previously broken, and although the bone fragments were not out of alignment, it has since healed improperly. This malunion indicates that the bone has joined together in a way that is anatomically incorrect or functionally impaired, even if the initial fracture was nondisplaced.

Use this code when a patient presents for follow-up care, rehabilitation, or management of complications related to a previously diagnosed nondisplaced fracture of the anterior process of the right calcaneus, and imaging or clinical assessment confirms malunion. This applies to situations where the malunion is the primary focus of the current encounter.

• Ensure documentation clearly states "malunion" and specifies the "anterior process" of the "right calcaneus."
• Verify the encounter is for subsequent care related to the fracture and its malunion, not the initial treatment.
• Distinguish from nonunion, which implies a complete failure of bone healing rather than improper healing.