ICD-10-CM > Z00-Z99 > Z40-Z53 > Z40 > Z40.8 Z40.8 Encounter for other prophylactic surgery Non-Billable/Non-Specific Codes Z40.81Encounter for prophylactic surgery for removal of ovary(s) for persons without known genetic/familial risk factorsZ40.82Encounter for prophylactic surgery for removal of fallopian tube(s) for persons without known genetic/familial risk factorsZ40.89Encounter for other prophylactic surgery