2006 ICD-9-CM Volume 1 Diagnosis Codes > Supplementary Classification Of External Causes Of Injury And Poisoning E800-E999 > Surgical And Medical Procedures As The Cause Of Abnormal Reaction Of Patient Or Later Complication, Without Mention Of Misadventure At The Time Of Procedure E878-E879 > E878 Surgical operation and other surgical procedures as the cause of abnormal reaction of patient or of later complication without mention of misadventure at the time of operation E879 Other procedures without mention of misadventure at the time of procedure as the cause of abnormal reaction of patient or of later complication