therapeutic procedure surgical procedure OAE:0000067 A diagnostic or treatment procedure performed by manual and/or instrumental means, often involving an incision and the removal or replacement of a diseased organ or tissue; of or relating to or involving or used in surgery or requiring or amenable to treatment by surgery. NCRO:0000228 NCIT:C17173 ERO:0000378 NCIT:C15329 SCDO:1000017 surgical intervention surgery operation surgical operation