Nondisp avulsion fx left ilium, subs for fx w nonunion

This code signifies a specific type of pelvic fracture involving the left ilium, where a small piece of bone has been pulled away by aponte (avulsion) but remains in its anatomical position (nondisplaced). The "K" seventh character indicates that the fracture has not healed as expected and is now being treated for a nonunion, meaning the bone fragments have failed to unite after the typical healing period.

This code is appropriate for encounters where a patient is receiving ongoing care for a previously diagnosed nondisplaced avulsion fracture of the left ilium that has progressed to a nonunion. It should be used when the physician is actively managing the nonunion, such as during follow-up visits, prior to surgical intervention for nonunion, or during conservative management attempts for the nonunion.

• Always verify the laterality (left vs. right) and the specific bone involved (ilium) to ensure accurate coding.
• The "K" seventh character is crucial and indicates a nonunion; ensure this is clearly documented by the provider.
• This code should be sequenced as the primary diagnosis when the nonunion is the focus of the encounter, with any associated conditions coded secondarily.