| O318X14 | Oth comp specific to multiple gest, first trimester, fetus 4 Other complications specific to multiple gestation, first trimester, fetus 4 |
| O318X15 | Oth comp specific to multiple gest, first trimester, fetus 5 Other complications specific to multiple gestation, first trimester, fetus 5 |
| O318X19 | Other complications specific to multiple gestation, first trimester, other fetus |
| O318X2 | Other complications specific to multiple gestation, second trimester |
| O318X20 | Other complications specific to multiple gestation, second trimester, not applicable or unspecified |
| O318X21 | Other complications specific to multiple gestation, second trimester, fetus 1 |
| O318X22 | Other complications specific to multiple gestation, second trimester, fetus 2 |
| O318X23 | Other complications specific to multiple gestation, second trimester, fetus 3 |
| O318X24 | Other complications specific to multiple gestation, second trimester, fetus 4 |
| O318X25 | Other complications specific to multiple gestation, second trimester, fetus 5 |
| O318X29 | Other complications specific to multiple gestation, second trimester, other fetus |
| O318X3 | Other complications specific to multiple gestation, third trimester |
| O318X30 | Other complications specific to multiple gestation, third trimester, not applicable or unspecified |
| O318X31 | Oth comp specific to multiple gest, third trimester, fetus 1 Other complications specific to multiple gestation, third trimester, fetus 1 |
| O318X32 | Oth comp specific to multiple gest, third trimester, fetus 2 Other complications specific to multiple gestation, third trimester, fetus 2 |
| O318X33 | Oth comp specific to multiple gest, third trimester, fetus 3 Other complications specific to multiple gestation, third trimester, fetus 3 |
| O318X34 | Oth comp specific to multiple gest, third trimester, fetus 4 Other complications specific to multiple gestation, third trimester, fetus 4 |
| O318X35 | Oth comp specific to multiple gest, third trimester, fetus 5 Other complications specific to multiple gestation, third trimester, fetus 5 |
| O318X39 | Other complications specific to multiple gestation, third trimester, other fetus |
| O318X9 | Other complications specific to multiple gestation, unspecified trimester |
| O318X90 | Other complications specific to multiple gestation, unspecified trimester, not applicable or unspecified |
| O318X91 | Other complications specific to multiple gestation, unspecified trimester, fetus 1 |
| O318X92 | Other complications specific to multiple gestation, unspecified trimester, fetus 2 |
| O318X93 | Other complications specific to multiple gestation, unspecified trimester, fetus 3 |
| O318X94 | Other complications specific to multiple gestation, unspecified trimester, fetus 4 |
| O318X95 | Other complications specific to multiple gestation, unspecified trimester, fetus 5 |
| O318X99 | Oth comp specific to multiple gestation, unsp trimester, oth Other complications specific to multiple gestation, unspecified trimester, other fetus |
| O32 | Maternal care for malpresentation of fetus |
| O320 | Maternal care for unstable lie |
| O320XX0 | Maternal care for unstable lie, not applicable or unspecified |
| O320XX1 | Maternal care for unstable lie, fetus 1 |
| O320XX2 | Maternal care for unstable lie, fetus 2 |
| O320XX3 | Maternal care for unstable lie, fetus 3 |
| O320XX4 | Maternal care for unstable lie, fetus 4 |
| O320XX5 | Maternal care for unstable lie, fetus 5 |
| O320XX9 | Maternal care for unstable lie, other fetus |
| O321 | Maternal care for breech presentation |
| O321XX0 | Maternal care for breech presentation, not applicable or unspecified |
| O321XX1 | Maternal care for breech presentation, fetus 1 |
| O321XX2 | Maternal care for breech presentation, fetus 2 |
| O321XX3 | Maternal care for breech presentation, fetus 3 |
| O321XX4 | Maternal care for breech presentation, fetus 4 |
| O321XX5 | Maternal care for breech presentation, fetus 5 |
| O321XX9 | Maternal care for breech presentation, other fetus |
| O322 | Maternal care for transverse and oblique lie |
| O322XX0 | Maternal care for transverse and oblique lie, not applicable or unspecified |
| O322XX1 | Maternal care for transverse and oblique lie, fetus 1 |
| O322XX2 | Maternal care for transverse and oblique lie, fetus 2 |
| O322XX3 | Maternal care for transverse and oblique lie, fetus 3 |
| O322XX4 | Maternal care for transverse and oblique lie, fetus 4 |