Y88.3: Sequelae of surgical and 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

Sequelae of surgical and medical procedures refer to unexpected outcomes that occur after a patient has undergone a surgery or a medical procedure. This can happen even when there's no mention of any mishap during the procedure itself. These sequelae, or resulting conditions, can be seen as abnormal reactions in a patient, or they could be a complication that develops at a later stage. They can be directly attributable to the procedure that was undergone and are not part of the natural progression of the patient's original condition. These outcomes may vary widely, from minor to major, depending on the type of procedure and individual patient characteristics. Symptoms can be diverse and depend on the specific repercussion, which may impact any system in the body. Sequelae can develop immediately post-procedure or may take time to emerge. Identifying them involves patient observation, as well as diagnostic tests as applicable, based on presented symptoms.