| ICD-10 Code | Description |
| O31.30X0 | Continuing pregnancy after elective fetal reduction of one fetus or more, unspecified trimester, not applicable or unspecified |
| O31.30X1 | Continuing pregnancy after elective fetal reduction of one fetus or more, unspecified trimester, fetus 1 |
| O31.30X2 | Continuing pregnancy after elective fetal reduction of one fetus or more, unspecified trimester, fetus 2 |
| O31.30X3 | Continuing pregnancy after elective fetal reduction of one fetus or more, unspecified trimester, fetus 3 |
| O31.30X4 | Continuing pregnancy after elective fetal reduction of one fetus or more, unspecified trimester, fetus 4 |
| O31.30X5 | Continuing pregnancy after elective fetal reduction of one fetus or more, unspecified trimester, fetus 5 |
| O31.30X9 | Continuing pregnancy after elective fetal reduction of one fetus or more, unspecified trimester, other fetus |
| O31.31X0 | Continuing pregnancy after elective fetal reduction of one fetus or more, first trimester, not applicable or unspecified |
| O31.31X1 | Continuing pregnancy after elective fetal reduction of one fetus or more, first trimester, fetus 1 |
| O31.31X2 | Continuing pregnancy after elective fetal reduction of one fetus or more, first trimester, fetus 2 |
| O31.31X3 | Continuing pregnancy after elective fetal reduction of one fetus or more, first trimester, fetus 3 |
| O31.31X4 | Continuing pregnancy after elective fetal reduction of one fetus or more, first trimester, fetus 4 |
| O31.31X5 | Continuing pregnancy after elective fetal reduction of one fetus or more, first trimester, fetus 5 |
| O31.31X9 | Continuing pregnancy after elective fetal reduction of one fetus or more, first trimester, other fetus |
| O31.32X0 | Continuing pregnancy after elective fetal reduction of one fetus or more, second trimester, not applicable or unspecified |
| O31.32X1 | Continuing pregnancy after elective fetal reduction of one fetus or more, second trimester, fetus 1 |
| O31.32X2 | Continuing pregnancy after elective fetal reduction of one fetus or more, second trimester, fetus 2 |
| O31.32X3 | Continuing pregnancy after elective fetal reduction of one fetus or more, second trimester, fetus 3 |
| O31.32X4 | Continuing pregnancy after elective fetal reduction of one fetus or more, second trimester, fetus 4 |
| O31.32X5 | Continuing pregnancy after elective fetal reduction of one fetus or more, second trimester, fetus 5 |
| O31.32X9 | Continuing pregnancy after elective fetal reduction of one fetus or more, second trimester, other fetus |
| O31.33X0 | Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester, not applicable or unspecified |
| O31.33X1 | Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester, fetus 1 |
| O31.33X2 | Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester, fetus 2 |
| O31.33X3 | Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester, fetus 3 |
| O31.33X4 | Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester, fetus 4 |
| O31.33X5 | Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester, fetus 5 |
| O31.33X9 | Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester, other fetus |
