Fracture of alveolus of maxilla, subs for fx w nonunion

This code signifies a fracture of the alveolar process of the upper jawbone (maxilla) that has not healed properly and is being treated during a follow-up visit. Nonunion indicates that the bone ends have failed to unite after the typical healing period. This condition can lead to pain, malocclusion, and instability of teeth.

Apply this code for patients presenting for ongoing management or treatment of a previously diagnosed maxillary alveolus fracture that has developed nonunion. Documentation should clearly state "nonunion" and indicate that this is a subsequent encounter for the fracture. This code is appropriate for office visits, hospital outpatient visits, or inpatient stays focused on addressing the nonunion.

• Ensure documentation explicitly states "nonunion" and specifies the encounter as subsequent.
• Distinguish from malunion (improper healing) or delayed union (slower than expected healing).
• Always sequence this code after any primary diagnosis related to the reason for the encounter, if applicable.