Nondisp avulsion fx left ischium, subs for fx w nonunion

This code signifies a fracture of the left ischium where a small piece of bone has been pulled away by a tendon or ligament, but the main bone fragments remain in their normal alignment. It specifically indicates that the fracture is not healing as expected (nonunion) and the patient is in a subsequent phase of care for this ongoing issue.

Apply this code for patients presenting for follow-up care, evaluation, or treatment of a previously diagnosed avulsion fracture of the left ischium that has failed to unite. This includes scenarios where the provider is monitoring the nonunion, considering further intervention, or managing complications related to the lack of healing.

• Ensure documentation clearly specifies "left" ischium and "avulsion" fracture type.
• Confirm the "subsequent encounter" and "nonunion" status are explicitly supported in the medical record.
• Always sequence this code as the primary diagnosis when the nonunion is the focus of the encounter.