O31 Complications specific to multiple gestation
ICD-10-CM category O31 sits in Chapter 15 (Pregnancy, childbirth and the puerperium, O00-O9A). It contains 168 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.
Subcategories
O31.0 Papyraceous fetusO31.00 Papyraceous fetus, unspecified trimesterO31.01 Papyraceous fetus, first trimesterO31.02 Papyraceous fetus, second trimesterO31.03 Papyraceous fetus, third trimesterO31.1 Cont pregnancy after spon abortion of one fetus or moreO31.10 Cont preg after spon abortion of one fetus or more, unsp triO31.11 Cont preg after spon abort of one fetus or more, first triO31.12 Cont preg after spon abort of one fetus or more, second triO31.13 Cont preg after spon abort of one fetus or more, third triO31.2 Continuing pregnancy after uterin death of one fetus or moreO31.20 Cont preg after uterin death of one fetus or more, unsp triO31.21 Cont preg after uterin death of one fetus or more, first triO31.22 Cont preg after uterin death of one fetus or more, 2nd triO31.23 Cont preg after uterin death of one fetus or more, third triO31.3 Cont preg after elective fetal rdct of one fetus or moreO31.30 Cont preg aft elctv fetl rdct of one fetus or more, unsp triO31.31 Cont preg aft elctv fetl rdct of one fts or more, first triO31.32 Cont preg aft elctv fetal rdct of one fetus or more, 2nd triO31.33 Cont preg aft elctv fetl rdct of one fts or more, third triO31.4 Cont preg after vanishing twin syndrome of one fetus or moreO31.40 Cont preg aft vanishing twin syn one fts or more, unsp triO31.41 Cont preg aft vanishing twin syn of one fts or more, 1st triO31.42 Cont preg aft vanishing twin syn of one fts or more, 2nd triO31.43 Cont preg aft vanishing twin syn of one fts or more, 3rd triO31.8 Other complications specific to multiple gestationO31.8X Other complications specific to multiple gestationO31.8X1 Oth comp specific to multiple gestation, first trimesterO31.8X2 Oth comp specific to multiple gestation, second trimesterO31.8X3 Oth comp specific to multiple gestation, third trimesterO31.8X9 Oth comp specific to multiple gestation, unsp trimester
Billable codes in O31
| Code | Description |
|---|---|
O31.00X0 | Papyraceous fetus, unspecified trimester, not applicable or unspecified |
O31.00X1 | Papyraceous fetus, unspecified trimester, fetus 1 |
O31.00X2 | Papyraceous fetus, unspecified trimester, fetus 2 |
O31.00X3 | Papyraceous fetus, unspecified trimester, fetus 3 |
O31.00X4 | Papyraceous fetus, unspecified trimester, fetus 4 |
O31.00X5 | Papyraceous fetus, unspecified trimester, fetus 5 |
O31.00X9 | Papyraceous fetus, unspecified trimester, other fetus |
O31.01X0 | Papyraceous fetus, first trimester, not applicable or unspecified |
O31.01X1 | Papyraceous fetus, first trimester, fetus 1 |
O31.01X2 | Papyraceous fetus, first trimester, fetus 2 |
O31.01X3 | Papyraceous fetus, first trimester, fetus 3 |
O31.01X4 | Papyraceous fetus, first trimester, fetus 4 |
O31.01X5 | Papyraceous fetus, first trimester, fetus 5 |
O31.01X9 | Papyraceous fetus, first trimester, other fetus |
O31.02X0 | Papyraceous fetus, second trimester, not applicable or unspecified |
O31.02X1 | Papyraceous fetus, second trimester, fetus 1 |
O31.02X2 | Papyraceous fetus, second trimester, fetus 2 |
O31.02X3 | Papyraceous fetus, second trimester, fetus 3 |
O31.02X4 | Papyraceous fetus, second trimester, fetus 4 |
O31.02X5 | Papyraceous fetus, second trimester, fetus 5 |
O31.02X9 | Papyraceous fetus, second trimester, other fetus |
O31.03X0 | Papyraceous fetus, third trimester, not applicable or unspecified |
O31.03X1 | Papyraceous fetus, third trimester, fetus 1 |
O31.03X2 | Papyraceous fetus, third trimester, fetus 2 |
O31.03X3 | Papyraceous fetus, third trimester, fetus 3 |
O31.03X4 | Papyraceous fetus, third trimester, fetus 4 |
O31.03X5 | Papyraceous fetus, third trimester, fetus 5 |
O31.03X9 | Papyraceous fetus, third trimester, other fetus |
O31.10X0 | Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, not applicable or unspecified |
O31.10X1 | Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, fetus 1 |
O31.10X2 | Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, fetus 2 |
O31.10X3 | Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, fetus 3 |
O31.10X4 | Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, fetus 4 |
O31.10X5 | Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, fetus 5 |
O31.10X9 | Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, other fetus |
O31.11X0 | Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, not applicable or unspecified |
O31.11X1 | Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, fetus 1 |
O31.11X2 | Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, fetus 2 |
O31.11X3 | Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, fetus 3 |
O31.11X4 | Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, fetus 4 |
O31.11X5 | Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, fetus 5 |
O31.11X9 | Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, other fetus |
O31.12X0 | Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, not applicable or unspecified |
O31.12X1 | Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, fetus 1 |
O31.12X2 | Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, fetus 2 |
O31.12X3 | Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, fetus 3 |
O31.12X4 | Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, fetus 4 |
O31.12X5 | Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, fetus 5 |
O31.12X9 | Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, other fetus |
O31.13X0 | Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, not applicable or unspecified |
O31.13X1 | Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, fetus 1 |
O31.13X2 | Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, fetus 2 |
O31.13X3 | Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, fetus 3 |
O31.13X4 | Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, fetus 4 |
O31.13X5 | Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, fetus 5 |
O31.13X9 | Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, other fetus |
O31.20X0 | Continuing pregnancy after intrauterine death of one fetus or more, unspecified trimester, not applicable or unspecified |
O31.20X1 | Continuing pregnancy after intrauterine death of one fetus or more, unspecified trimester, fetus 1 |
O31.20X2 | Continuing pregnancy after intrauterine death of one fetus or more, unspecified trimester, fetus 2 |
O31.20X3 | Continuing pregnancy after intrauterine death of one fetus or more, unspecified trimester, fetus 3 |
O31.20X4 | Continuing pregnancy after intrauterine death of one fetus or more, unspecified trimester, fetus 4 |
O31.20X5 | Continuing pregnancy after intrauterine death of one fetus or more, unspecified trimester, fetus 5 |
O31.20X9 | Continuing pregnancy after intrauterine death of one fetus or more, unspecified trimester, other fetus |
O31.21X0 | Continuing pregnancy after intrauterine death of one fetus or more, first trimester, not applicable or unspecified |
O31.21X1 | Continuing pregnancy after intrauterine death of one fetus or more, first trimester, fetus 1 |
O31.21X2 | Continuing pregnancy after intrauterine death of one fetus or more, first trimester, fetus 2 |
O31.21X3 | Continuing pregnancy after intrauterine death of one fetus or more, first trimester, fetus 3 |
O31.21X4 | Continuing pregnancy after intrauterine death of one fetus or more, first trimester, fetus 4 |
O31.21X5 | Continuing pregnancy after intrauterine death of one fetus or more, first trimester, fetus 5 |
O31.21X9 | Continuing pregnancy after intrauterine death of one fetus or more, first trimester, other fetus |
O31.22X0 | Continuing pregnancy after intrauterine death of one fetus or more, second trimester, not applicable or unspecified |
O31.22X1 | Continuing pregnancy after intrauterine death of one fetus or more, second trimester, fetus 1 |
O31.22X2 | Continuing pregnancy after intrauterine death of one fetus or more, second trimester, fetus 2 |
O31.22X3 | Continuing pregnancy after intrauterine death of one fetus or more, second trimester, fetus 3 |
O31.22X4 | Continuing pregnancy after intrauterine death of one fetus or more, second trimester, fetus 4 |
O31.22X5 | Continuing pregnancy after intrauterine death of one fetus or more, second trimester, fetus 5 |
O31.22X9 | Continuing pregnancy after intrauterine death of one fetus or more, second trimester, other fetus |
O31.23X0 | Continuing pregnancy after intrauterine death of one fetus or more, third trimester, not applicable or unspecified |
O31.23X1 | Continuing pregnancy after intrauterine death of one fetus or more, third trimester, fetus 1 |
O31.23X2 | Continuing pregnancy after intrauterine death of one fetus or more, third trimester, fetus 2 |
O31.23X3 | Continuing pregnancy after intrauterine death of one fetus or more, third trimester, fetus 3 |
O31.23X4 | Continuing pregnancy after intrauterine death of one fetus or more, third trimester, fetus 4 |
O31.23X5 | Continuing pregnancy after intrauterine death of one fetus or more, third trimester, fetus 5 |
O31.23X9 | Continuing pregnancy after intrauterine death of one fetus or more, third trimester, other fetus |
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 |
O31.40X0 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, unspecified trimester, not applicable or unspecified |
O31.40X1 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, unspecified trimester, fetus 1 |
O31.40X2 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, unspecified trimester, fetus 2 |
O31.40X3 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, unspecified trimester, fetus 3 |
O31.40X4 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, unspecified trimester, fetus 4 |
O31.40X5 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, unspecified trimester, fetus 5 |
O31.40X9 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, unspecified trimester, other fetus |
O31.41X0 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, first trimester, not applicable or unspecified |
O31.41X1 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, first trimester, fetus 1 |
O31.41X2 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, first trimester, fetus 2 |
O31.41X3 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, first trimester, fetus 3 |
O31.41X4 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, first trimester, fetus 4 |
O31.41X5 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, first trimester, fetus 5 |
O31.41X9 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, first trimester, other fetus |
O31.42X0 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, second trimester, not applicable or unspecified |
O31.42X1 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, second trimester, fetus 1 |
O31.42X2 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, second trimester, fetus 2 |
O31.42X3 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, second trimester, fetus 3 |
O31.42X4 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, second trimester, fetus 4 |
O31.42X5 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, second trimester, fetus 5 |
O31.42X9 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, second trimester, other fetus |
O31.43X0 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, third trimester, not applicable or unspecified |
O31.43X1 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, third trimester, fetus 1 |
O31.43X2 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, third trimester, fetus 2 |
O31.43X3 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, third trimester, fetus 3 |
O31.43X4 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, third trimester, fetus 4 |
O31.43X5 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, third trimester, fetus 5 |
O31.43X9 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, third trimester, other fetus |
O31.8X10 | Other complications specific to multiple gestation, first trimester, not applicable or unspecified |
O31.8X11 | Other complications specific to multiple gestation, first trimester, fetus 1 |
O31.8X12 | Other complications specific to multiple gestation, first trimester, fetus 2 |
O31.8X13 | Other complications specific to multiple gestation, first trimester, fetus 3 |
O31.8X14 | Other complications specific to multiple gestation, first trimester, fetus 4 |
O31.8X15 | Other complications specific to multiple gestation, first trimester, fetus 5 |
O31.8X19 | Other complications specific to multiple gestation, first trimester, other fetus |
O31.8X20 | Other complications specific to multiple gestation, second trimester, not applicable or unspecified |
O31.8X21 | Other complications specific to multiple gestation, second trimester, fetus 1 |
O31.8X22 | Other complications specific to multiple gestation, second trimester, fetus 2 |
O31.8X23 | Other complications specific to multiple gestation, second trimester, fetus 3 |
O31.8X24 | Other complications specific to multiple gestation, second trimester, fetus 4 |
O31.8X25 | Other complications specific to multiple gestation, second trimester, fetus 5 |
O31.8X29 | Other complications specific to multiple gestation, second trimester, other fetus |
O31.8X30 | Other complications specific to multiple gestation, third trimester, not applicable or unspecified |
O31.8X31 | Other complications specific to multiple gestation, third trimester, fetus 1 |
O31.8X32 | Other complications specific to multiple gestation, third trimester, fetus 2 |
O31.8X33 | Other complications specific to multiple gestation, third trimester, fetus 3 |
O31.8X34 | Other complications specific to multiple gestation, third trimester, fetus 4 |
O31.8X35 | Other complications specific to multiple gestation, third trimester, fetus 5 |
O31.8X39 | Other complications specific to multiple gestation, third trimester, other fetus |
O31.8X90 | Other complications specific to multiple gestation, unspecified trimester, not applicable or unspecified |
O31.8X91 | Other complications specific to multiple gestation, unspecified trimester, fetus 1 |
O31.8X92 | Other complications specific to multiple gestation, unspecified trimester, fetus 2 |
O31.8X93 | Other complications specific to multiple gestation, unspecified trimester, fetus 3 |
O31.8X94 | Other complications specific to multiple gestation, unspecified trimester, fetus 4 |
O31.8X95 | Other complications specific to multiple gestation, unspecified trimester, fetus 5 |
O31.8X99 | Other complications specific to multiple gestation, unspecified trimester, other fetus |
Search within ICD-10-CM for O31 and related codes