Bone graft rejection

This code signifies the body's immune response against a transplanted bone graft, leading to its failure to integrate or function properly. This rejection can manifest as pain, swelling, non-union, or eventual graft resorption, compromising the intended surgical outcome.

Apply this code when documentation clearly indicates that a patient's bone graft, whether autograft, allograft, or xenograft, is experiencing an immunological rejection. This includes cases where imaging or clinical findings confirm the graft is failing due to the body's adverse reaction, rather than mechanical failure or infection.

• Ensure documentation explicitly states "rejection" of the bone graft; avoid using this code for non-union or malunion without evidence of rejection.
• Consider additional codes for specific complications or manifestations of the rejection, such as pain or infection, if present.
• Distinguish between bone graft rejection and failure due to other causes, such as infection, mechanical stress, or inadequate vascularization.