Displaced avulsion fx unsp ischium, subs for fx w nonunion

This code signifies a fracture where a piece of the ischium bone has been pulled away by a tendon or ligament, and the fractured fragments are not in their normal anatomical alignment. Furthermore, this specific code indicates that the fracture has failed to heal properly, and the patient is presenting for follow-up care related to this ongoing nonunion.

Apply this code when documenting a patient encounter for an avulsion fracture of an unspecified ischium that is displaced and has not healed. This is appropriate for subsequent visits where the focus is on managing the established nonunion, such as for evaluation of healing progress, pain management, or preparation for further intervention.

• Ensure documentation clearly states "nonunion" and "displaced" for an avulsion fracture of the ischium.
• This code is for subsequent encounters; an initial encounter would use a different seventh character.
• Confirm the specific ischium (left or right) is not documented; otherwise, a more specific code would be required.