Y84: Other medical procedures as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure

The group of conditions classified under Y84 in the ICD-10 WHO 2016 classification describes scenarios where a patient exhibits an abnormal reaction or develops complications after undergoing a medical procedure. These complications and reactions are not linked to any errors or mishaps that happened during the procedure itself. The exact nature of these abnormal reactions or complications can vary widely, but they generally refer to any unexpected physical or psychological response post-procedure. For example, these can include infections, bleeding, or the body's rejection of a surgical implant. Similarly, an individual might experience mood changes, stress, or anxiety following a procedure. In some cases, these reactions or complications might show up immediately after the procedure. In other cases, they might surface days, weeks, or even months later. The severity and duration of these conditions can also vary from mild and short-term to severe and long-lasting.