O31: Complications specific to multiple gestation excludes2 delayed delivery of second twin, triplet, etc. (O63.2) malpresentation of one fetus or more (O32.9) placental transfusion syndromes (O43.0-) sevenChrNote One of the following 7th characters is to be assigned to each code under category O31. 7th character 0 is for single gestations and multiple gestations where the fetus is unspecified. 7th characters 1 through 9 are for cases of multiple gestations to identify the fetus for which the code applies. The appropriate code from category O30, Multiple gestation, must also be assigned when assigning a code from category O31 that has a 7th character of 1 through 9. sevenChrDef 0: not applicable or unspecified 1: fetus 1 2: fetus 2 3: fetus 3 4: fetus 4 5: fetus 5 9: other fetus |
| O31.0: Papyraceous fetus |
| O31.1: Continuing pregnancy after spontaneous abortion of one fetus or more |
| O31.2: Continuing pregnancy after intrauterine death of one fetus or more |
| O31.3: Continuing pregnancy after elective fetal reduction of one fetus or more |
| O31.8: Other complications specific to multiple gestation |