T80-T88: Complications of surgical and medical care, not elsewhere classified

T86: Failure and rejection of transplanted organs and tissues

The ICD-10 group range T86 refers to the failure and rejection of transplanted organs and tissues. Transplants are medical procedures where an organ or tissue is moved from one individual to another, often to replace a damaged or malfunctioning body part. Despite transplant success, complications can arise, which lead to the failure or rejection of the donated organ or tissue. Rejection occurs when the recipient's immune system identifies the transplant as foreign and attacks it. This can happen shortly after transplantation, or much later. Symptoms may vary depending on the transplanted organ but can include fever, fatigue, pain or swelling in the area of the transplant, and decrease in organ function. Disease progression can lead to organ failure requiring re-transplant or cause severe systemic illness. The cardiovascular system, respiratory system, renal system, hepatic system, integumentary system, or other parts of the body may be affected depending on the type and location of the transplant.