Nondisp avulsion fx unsp ischium, subs for fx w nonunion

This code signifies a fracture where a small piece of bone has been pulled away from the main bone by a tendon or ligament, specifically in an unspecified part of the ischium. The fracture fragments are still in their normal anatomical alignment, and the patient is in a later stage of care where the fracture has failed to heal properly.

This code is appropriate for follow-up encounters for patients with an avulsion fracture of the ischium that has not healed as expected. It should be used when documentation confirms the fracture is nondisplaced and the encounter is for ongoing management of the nonunion, such as for further imaging, pain management, or discussion of surgical intervention.

• Ensure documentation explicitly states "nondisplaced avulsion fracture" and "nonunion."
• Verify the encounter is for subsequent care, not the initial treatment.
• Confirm the fracture site is documented as "ischium" but without further specificity.