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O31 Complications specific to multiple gestation
BackO31.0Papyraceous fetusCategory4 →O31.00Papyraceous fetus, unspecified trimesterCategoryO31.01Papyraceous fetus, first trimesterCategoryO31.02Papyraceous fetus, second trimesterCategoryO31.03Papyraceous fetus, third trimesterCategoryO31.1Continuing pregnancy after spontaneous abortion of one fetus or moreCategory4 →O31.10Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimesterCategoryO31.11Continuing pregnancy after spontaneous abortion of one fetus or more, first trimesterCategoryO31.12Continuing pregnancy after spontaneous abortion of one fetus or more, second trimesterCategoryO31.13Continuing pregnancy after spontaneous abortion of one fetus or more, third trimesterCategoryO31.2Continuing pregnancy after intrauterine death of one fetus or moreCategory4 →O31.20Continuing pregnancy after intrauterine death of one fetus or more, unspecified trimesterCategoryO31.21Continuing pregnancy after intrauterine death of one fetus or more, first trimesterCategoryO31.22Continuing pregnancy after intrauterine death of one fetus or more, second trimesterCategoryO31.23Continuing pregnancy after intrauterine death of one fetus or more, third trimesterCategoryO31.3Continuing pregnancy after elective fetal reduction of one fetus or moreCategory4 →O31.30Continuing pregnancy after elective fetal reduction of one fetus or more, unspecified trimesterCategoryO31.31Continuing pregnancy after elective fetal reduction of one fetus or more, first trimesterCategoryO31.32Continuing pregnancy after elective fetal reduction of one fetus or more, second trimesterCategoryO31.33Continuing pregnancy after elective fetal reduction of one fetus or more, third trimesterCategoryO31.8Other complications specific to multiple gestationCategory1 →O31.8XOther complications specific to multiple gestationCategory4 →O31.8X1Other complications specific to multiple gestation, first trimesterCategoryO31.8X2Other complications specific to multiple gestation, second trimesterCategoryO31.8X3Other complications specific to multiple gestation, third trimesterCategoryO31.8X9Other complications specific to multiple gestation, unspecified trimesterCategory
Category
O31
Complications specific to multiple gestation
EXCLUDES
Excludes2: delayed delivery of second twin, triplet, etc. (O63.2)
malpresentation of one fetus or more (O32.9)
placental transfusion syndromes (O43.0-)
malpresentation of one fetus or more (O32.9)
placental transfusion syndromes (O43.0-)
NOTE
7th character: 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.
7th character definitions: not applicable or unspecified
fetus 1
fetus 2
fetus 3
fetus 4
fetus 5
other fetus
7th character definitions: not applicable or unspecified
fetus 1
fetus 2
fetus 3
fetus 4
fetus 5
other fetus
- Chapter
- XV · Pregnancy, childbirth and the puerperium
- Section
- O30-O48
- Valid from
Source
CMS ICD-10-CM Tabular List, edition FY2026.