| Z31.41 | Encounter for fertility testing | BILLABLE CODE |
| Z31.42 | Aftercare following sterilization reversal | BILLABLE CODE |
| Z31.43 | Encounter for genetic testing of female for procreative management | NON-BILLABLE CODE |
| Z31.430 | Encounter of female for testing for genetic disease carrier status for procreative management | BILLABLE CODE |
| Z31.438 | Encounter for other genetic testing of female for procreative management | BILLABLE CODE |
| Z31.44 | Encounter for genetic testing of male for procreative management | NON-BILLABLE CODE |
| Z31.440 | Encounter of male for testing for genetic disease carrier status for procreative management | BILLABLE CODE |
| Z31.441 | Encounter for testing of male partner of patient with recurrent pregnancy loss | BILLABLE CODE |
| Z31.448 | Encounter for other genetic testing of male for procreative management | BILLABLE CODE |
| Z31.49 | Encounter for other procreative investigation and testing | BILLABLE CODE |
