| Z40 | Encounter for prophylactic surgery | NON-BILLABLE CODE |
| Z40.0 | Encounter for prophylactic surgery for risk factors related to malignant neoplasms | NON-BILLABLE CODE |
| Z40.00 | Encounter for prophylactic removal of unspecified organ | BILLABLE CODE |
| Z40.01 | Encounter for prophylactic removal of breast | BILLABLE CODE |
| Z40.02 | Encounter for prophylactic removal of ovary(s) | BILLABLE CODE |
| Z40.03 | Encounter for prophylactic removal of fallopian tube(s) | BILLABLE CODE |
| Z40.09 | Encounter for prophylactic removal of other organ | BILLABLE CODE |
| Z40.8 | Encounter for other prophylactic surgery | BILLABLE CODE |
