Displaced avulsion fx unsp ilium, subs for fx w nonunion

This code signifies a displaced avulsion fracture of an unspecified part of the ilium that has failed to heal properly. The patient is in a subsequent phase of care for this non-healing fracture, indicating ongoing management beyond the initial treatment.

Apply this code for patients presenting for follow-up care, cast changes, or other ongoing treatment for a previously diagnosed displaced avulsion fracture of the ilium that has not united. This is appropriate when documentation explicitly states "nonunion" and the fracture is displaced.

• Ensure documentation clearly specifies "nonunion" and "displaced" for an avulsion fracture of the ilium.
• This code is for subsequent encounters only; do not use for initial treatment.
• If the specific location on the ilium (e.g., anterior superior iliac spine) is known, a more specific code should be used.