ICD-10-CM > Z00-Z99 > Z40-Z53 > Z40 Z40 Encounter for prophylactic surgery Non-Billable/Non-Specific Type 1 Excludes organ donations (Z52.-)therapeutic organ removal-code to condition Codes Z40.0Encounter for prophylactic surgery for risk factors related to malignant neoplasmsZ40.00Encounter for prophylactic removal of unspecified organZ40.01Encounter for prophylactic removal of breastZ40.02Encounter for prophylactic removal of ovary(s)Z40.03Encounter for prophylactic removal of fallopian tube(s)Z40.09Encounter for prophylactic removal of other organZ40.8Encounter for other prophylactic surgeryZ40.81Encounter 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 surgeryZ40.9Encounter for prophylactic surgery, unspecified