ICD-10-CM category
O31: Complications specific to multiple gestation
Codes under O31 (Complications specific to multiple gestation). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| O31.0 | Papyraceous fetus | — |
| O31.0 | Papyraceous fetus | — |
| O31.00 | Papyraceous fetus, unspecified trimester | — |
| O31.00 | Papyraceous fetus, unspecified trimester | — |
| O31.00X0 | Papyraceous fetus, unspecified trimester, not applicable or unspecified | ✓ |
| O31.00X0 | Papyraceous fetus, unspecified trimester, not applicable or unspecified | ✓ |
| O31.00X1 | Papyraceous fetus, unspecified trimester, fetus 1 | ✓ |
| O31.00X1 | Papyraceous fetus, unspecified trimester, fetus 1 | ✓ |
| O31.00X2 | Papyraceous fetus, unspecified trimester, fetus 2 | ✓ |
| O31.00X2 | Papyraceous fetus, unspecified trimester, fetus 2 | ✓ |
| O31.00X3 | Papyraceous fetus, unspecified trimester, fetus 3 | ✓ |
| O31.00X3 | Papyraceous fetus, unspecified trimester, fetus 3 | ✓ |
| O31.00X4 | Papyraceous fetus, unspecified trimester, fetus 4 | ✓ |
| O31.00X4 | Papyraceous fetus, unspecified trimester, fetus 4 | ✓ |
| O31.00X5 | Papyraceous fetus, unspecified trimester, fetus 5 | ✓ |
| O31.00X5 | Papyraceous fetus, unspecified trimester, fetus 5 | ✓ |
| O31.00X9 | Papyraceous fetus, unspecified trimester, other fetus | ✓ |
| O31.00X9 | Papyraceous fetus, unspecified trimester, other fetus | ✓ |
| O31.01 | Papyraceous fetus, first trimester | — |
| O31.01 | Papyraceous fetus, first trimester | — |
| O31.1 | Continuing pregnancy after spontaneous abortion of one fetus or more | — |
| O31.1 | Continuing pregnancy after spontaneous abortion of one fetus or more | — |
| O31.01X0 | Papyraceous fetus, first trimester, not applicable or unspecified | ✓ |
| O31.01X0 | Papyraceous fetus, first trimester, not applicable or unspecified | ✓ |
| O31.01X1 | Papyraceous fetus, first trimester, fetus 1 | ✓ |
| O31.01X1 | Papyraceous fetus, first trimester, fetus 1 | ✓ |
| O31.01X2 | Papyraceous fetus, first trimester, fetus 2 | ✓ |
| O31.01X2 | Papyraceous fetus, first trimester, fetus 2 | ✓ |
| O31.01X3 | Papyraceous fetus, first trimester, fetus 3 | ✓ |
| O31.01X3 | Papyraceous fetus, first trimester, fetus 3 | ✓ |
| O31.01X4 | Papyraceous fetus, first trimester, fetus 4 | ✓ |
| O31.01X4 | Papyraceous fetus, first trimester, fetus 4 | ✓ |
| O31.01X5 | Papyraceous fetus, first trimester, fetus 5 | ✓ |
| O31.01X5 | Papyraceous fetus, first trimester, fetus 5 | ✓ |
| O31.01X9 | Papyraceous fetus, first trimester, other fetus | ✓ |
| O31.01X9 | Papyraceous fetus, first trimester, other fetus | ✓ |
| O31.02 | Papyraceous fetus, second trimester | — |
| O31.02 | Papyraceous fetus, second trimester | — |
| O31.2 | Continuing pregnancy after intrauterine death of one fetus or more | — |
| O31.2 | Continuing pregnancy after intrauterine death of one fetus or more | — |
| O31.02X0 | Papyraceous fetus, second trimester, not applicable or unspecified | ✓ |
| O31.02X0 | Papyraceous fetus, second trimester, not applicable or unspecified | ✓ |
| O31.02X1 | Papyraceous fetus, second trimester, fetus 1 | ✓ |
| O31.02X1 | Papyraceous fetus, second trimester, fetus 1 | ✓ |
| O31.02X2 | Papyraceous fetus, second trimester, fetus 2 | ✓ |
| O31.02X2 | Papyraceous fetus, second trimester, fetus 2 | ✓ |
| O31.02X3 | Papyraceous fetus, second trimester, fetus 3 | ✓ |
| O31.02X3 | Papyraceous fetus, second trimester, fetus 3 | ✓ |
| O31.02X4 | Papyraceous fetus, second trimester, fetus 4 | ✓ |
| O31.02X4 | Papyraceous fetus, second trimester, fetus 4 | ✓ |
| O31.02X5 | Papyraceous fetus, second trimester, fetus 5 | ✓ |
| O31.02X5 | Papyraceous fetus, second trimester, fetus 5 | ✓ |
| O31.02X9 | Papyraceous fetus, second trimester, other fetus | ✓ |
| O31.02X9 | Papyraceous fetus, second trimester, other fetus | ✓ |
| O31.03 | Papyraceous fetus, third trimester | — |
| O31.03 | Papyraceous fetus, third trimester | — |
| O31.3 | Continuing pregnancy after elective fetal reduction of one fetus or more | — |
| O31.3 | Continuing pregnancy after elective fetal reduction of one fetus or more | — |
| O31.03X0 | Papyraceous fetus, third trimester, not applicable or unspecified | ✓ |
| O31.03X0 | Papyraceous fetus, third trimester, not applicable or unspecified | ✓ |
| O31.03X1 | Papyraceous fetus, third trimester, fetus 1 | ✓ |
| O31.03X1 | Papyraceous fetus, third trimester, fetus 1 | ✓ |
| O31.03X2 | Papyraceous fetus, third trimester, fetus 2 | ✓ |
| O31.03X2 | Papyraceous fetus, third trimester, fetus 2 | ✓ |
| O31.03X3 | Papyraceous fetus, third trimester, fetus 3 | ✓ |
| O31.03X3 | Papyraceous fetus, third trimester, fetus 3 | ✓ |
| O31.03X4 | Papyraceous fetus, third trimester, fetus 4 | ✓ |
| O31.03X4 | Papyraceous fetus, third trimester, fetus 4 | ✓ |
| O31.03X5 | Papyraceous fetus, third trimester, fetus 5 | ✓ |
| O31.03X5 | Papyraceous fetus, third trimester, fetus 5 | ✓ |
| O31.03X9 | Papyraceous fetus, third trimester, other fetus | ✓ |
| O31.03X9 | Papyraceous fetus, third trimester, other fetus | ✓ |
| O31.4 | Continuing pregnancy after vanishing twin syndrome of one fetus or more | — |
| O31.8 | Other complications specific to multiple gestation | — |
| O31.8 | Other complications specific to multiple gestation | — |
| O31.8X | Other complications specific to multiple gestation | — |
| O31.8X | Other complications specific to multiple gestation | — |
| O31.8X1 | Other complications specific to multiple gestation, first trimester | — |
| O31.8X1 | Other complications specific to multiple gestation, first trimester | — |
| O31.8X2 | Other complications specific to multiple gestation, second trimester | — |
| O31.8X2 | Other complications specific to multiple gestation, second trimester | — |
| O31.8X3 | Other complications specific to multiple gestation, third trimester | — |
| O31.8X3 | Other complications specific to multiple gestation, third trimester | — |
| O31.8X9 | Other complications specific to multiple gestation, unspecified trimester | — |
| O31.8X9 | Other complications specific to multiple gestation, unspecified trimester | — |
| O31.8X10 | Other complications specific to multiple gestation, first trimester, not applicable or unspecified | ✓ |
| 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 | ✓ |
| O31.8X11 | Other complications specific to multiple gestation, first trimester, fetus 1 | ✓ |
| O31.8X12 | Other complications specific to multiple gestation, first trimester, fetus 2 | ✓ |
| O31.8X12 | Other complications specific to multiple gestation, first trimester, fetus 2 | ✓ |
| O31.8X13 | Other complications specific to multiple gestation, first trimester, fetus 3 | ✓ |
| O31.8X13 | Other complications specific to multiple gestation, first trimester, fetus 3 | ✓ |
| O31.8X14 | Other complications specific to multiple gestation, first trimester, fetus 4 | ✓ |
| O31.8X14 | Other complications specific to multiple gestation, first trimester, fetus 4 | ✓ |
| O31.8X15 | Other complications specific to multiple gestation, first trimester, fetus 5 | ✓ |
| O31.8X15 | Other complications specific to multiple gestation, first trimester, fetus 5 | ✓ |
| O31.8X19 | Other complications specific to multiple gestation, first trimester, other fetus | ✓ |
| 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 | ✓ |
| O31.8X20 | Other complications specific to multiple gestation, second trimester, not applicable or unspecified | ✓ |
| O31.8X21 | Other complications specific to multiple gestation, second trimester, fetus 1 | ✓ |
| O31.8X21 | Other complications specific to multiple gestation, second trimester, fetus 1 | ✓ |
| O31.8X22 | Other complications specific to multiple gestation, second trimester, fetus 2 | ✓ |
| O31.8X22 | Other complications specific to multiple gestation, second trimester, fetus 2 | ✓ |
| O31.8X23 | Other complications specific to multiple gestation, second trimester, fetus 3 | ✓ |
| O31.8X23 | Other complications specific to multiple gestation, second trimester, fetus 3 | ✓ |
| O31.8X24 | Other complications specific to multiple gestation, second trimester, fetus 4 | ✓ |
| O31.8X24 | Other complications specific to multiple gestation, second trimester, fetus 4 | ✓ |
| O31.8X25 | Other complications specific to multiple gestation, second trimester, fetus 5 | ✓ |
| O31.8X25 | Other complications specific to multiple gestation, second trimester, fetus 5 | ✓ |
| O31.8X29 | Other complications specific to multiple gestation, second trimester, other fetus | ✓ |
| 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 | ✓ |
| O31.8X30 | Other complications specific to multiple gestation, third trimester, not applicable or unspecified | ✓ |
| O31.8X31 | Other complications specific to multiple gestation, third trimester, fetus 1 | ✓ |
| O31.8X31 | Other complications specific to multiple gestation, third trimester, fetus 1 | ✓ |
| O31.8X32 | Other complications specific to multiple gestation, third trimester, fetus 2 | ✓ |
| O31.8X32 | Other complications specific to multiple gestation, third trimester, fetus 2 | ✓ |
| O31.8X33 | Other complications specific to multiple gestation, third trimester, fetus 3 | ✓ |
| O31.8X33 | Other complications specific to multiple gestation, third trimester, fetus 3 | ✓ |
| O31.8X34 | Other complications specific to multiple gestation, third trimester, fetus 4 | ✓ |
| O31.8X34 | Other complications specific to multiple gestation, third trimester, fetus 4 | ✓ |
| O31.8X35 | Other complications specific to multiple gestation, third trimester, fetus 5 | ✓ |
| O31.8X35 | Other complications specific to multiple gestation, third trimester, fetus 5 | ✓ |
| O31.8X39 | Other complications specific to multiple gestation, third trimester, other fetus | ✓ |
| 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 | ✓ |
| O31.8X90 | Other complications specific to multiple gestation, unspecified trimester, not applicable or unspecified | ✓ |
| O31.8X91 | Other complications specific to multiple gestation, unspecified trimester, fetus 1 | ✓ |
| O31.8X91 | Other complications specific to multiple gestation, unspecified trimester, fetus 1 | ✓ |
| O31.8X92 | Other complications specific to multiple gestation, unspecified trimester, fetus 2 | ✓ |
| O31.8X92 | Other complications specific to multiple gestation, unspecified trimester, fetus 2 | ✓ |
| O31.8X93 | Other complications specific to multiple gestation, unspecified trimester, fetus 3 | ✓ |
| O31.8X93 | Other complications specific to multiple gestation, unspecified trimester, fetus 3 | ✓ |
| O31.8X94 | Other complications specific to multiple gestation, unspecified trimester, fetus 4 | ✓ |
| O31.8X94 | Other complications specific to multiple gestation, unspecified trimester, fetus 4 | ✓ |
| O31.8X95 | Other complications specific to multiple gestation, unspecified trimester, fetus 5 | ✓ |
| O31.8X95 | Other complications specific to multiple gestation, unspecified trimester, fetus 5 | ✓ |
| O31.8X99 | Other complications specific to multiple gestation, unspecified trimester, other fetus | ✓ |
| O31.8X99 | Other complications specific to multiple gestation, unspecified trimester, other fetus | ✓ |
| O31.10 | Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester | — |
| O31.10 | Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester | — |
| O31.10X0 | Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, not applicable or unspecified | ✓ |
| 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 | ✓ |
| O31.10X1 | 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 | ✓ |
| O31.10X2 | 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 | ✓ |
| O31.10X3 | 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 | ✓ |
| O31.10X4 | 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 | ✓ |
| O31.10X5 | 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 | ✓ |
| O31.10X9 | Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, other fetus | ✓ |
| O31.11 | Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester | — |
| O31.11 | Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester | — |
| O31.11X0 | Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, not applicable or unspecified | ✓ |
| 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 | ✓ |
| O31.11X1 | 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 | ✓ |
| O31.11X2 | 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 | ✓ |
| O31.11X3 | 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 | ✓ |
| O31.11X4 | 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 | ✓ |
| O31.11X5 | 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 | ✓ |
| O31.11X9 | Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, other fetus | ✓ |
| O31.12 | Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester | — |
| O31.12 | Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester | — |
| O31.12X0 | Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, not applicable or unspecified | ✓ |
| 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 | ✓ |
| O31.12X1 | 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 | ✓ |
| O31.12X2 | 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 | ✓ |
| O31.12X3 | 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 | ✓ |
| O31.12X4 | 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 | ✓ |
| O31.12X5 | 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 | ✓ |
| O31.12X9 | Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, other fetus | ✓ |
| O31.13 | Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester | — |
| O31.13 | Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester | — |
| O31.13X0 | Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, not applicable or unspecified | ✓ |
| 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 | ✓ |
| O31.13X1 | 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 | ✓ |
| O31.13X2 | 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 | ✓ |
| O31.13X3 | 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 | ✓ |
| O31.13X4 | 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 | ✓ |
| O31.13X5 | 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 | ✓ |
| O31.13X9 | Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, other fetus | ✓ |
| O31.20 | Continuing pregnancy after intrauterine death of one fetus or more, unspecified trimester | — |
| O31.20 | Continuing pregnancy after intrauterine death of one fetus or more, unspecified trimester | — |
| O31.20X0 | Continuing pregnancy after intrauterine death of one fetus or more, unspecified trimester, not applicable or unspecified | ✓ |
| 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 | ✓ |
| O31.20X1 | 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 | ✓ |
| O31.20X2 | 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 | ✓ |
| O31.20X3 | 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 | ✓ |
| O31.20X4 | 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 | ✓ |
| O31.20X5 | 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 | ✓ |
| O31.20X9 | Continuing pregnancy after intrauterine death of one fetus or more, unspecified trimester, other fetus | ✓ |
| O31.21 | Continuing pregnancy after intrauterine death of one fetus or more, first trimester | — |
| O31.21 | Continuing pregnancy after intrauterine death of one fetus or more, first trimester | — |
| O31.21X0 | Continuing pregnancy after intrauterine death of one fetus or more, first trimester, not applicable or unspecified | ✓ |
| 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 | ✓ |
| O31.21X1 | 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 | ✓ |
| O31.21X2 | 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 | ✓ |
| O31.21X3 | 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 | ✓ |
| O31.21X4 | 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 | ✓ |
| O31.21X5 | 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 | ✓ |
| O31.21X9 | Continuing pregnancy after intrauterine death of one fetus or more, first trimester, other fetus | ✓ |
| O31.22 | Continuing pregnancy after intrauterine death of one fetus or more, second trimester | — |
| O31.22 | Continuing pregnancy after intrauterine death of one fetus or more, second trimester | — |
| O31.22X0 | Continuing pregnancy after intrauterine death of one fetus or more, second trimester, not applicable or unspecified | ✓ |
| 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 | ✓ |
| O31.22X1 | 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 | ✓ |
| O31.22X2 | 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 | ✓ |
| O31.22X3 | 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 | ✓ |
| O31.22X4 | 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 | ✓ |
| O31.22X5 | 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 | ✓ |
| O31.22X9 | Continuing pregnancy after intrauterine death of one fetus or more, second trimester, other fetus | ✓ |
| O31.23 | Continuing pregnancy after intrauterine death of one fetus or more, third trimester | — |
| O31.23 | Continuing pregnancy after intrauterine death of one fetus or more, third trimester | — |
| O31.23X0 | Continuing pregnancy after intrauterine death of one fetus or more, third trimester, not applicable or unspecified | ✓ |
| 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 | ✓ |
| O31.23X1 | 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 | ✓ |
| O31.23X2 | 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 | ✓ |
| O31.23X3 | 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 | ✓ |
| O31.23X4 | 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 | ✓ |
| O31.23X5 | 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 | ✓ |
| O31.23X9 | Continuing pregnancy after intrauterine death of one fetus or more, third trimester, other fetus | ✓ |
| O31.30 | Continuing pregnancy after elective fetal reduction of one fetus or more, unspecified trimester | — |
| O31.30 | Continuing pregnancy after elective fetal reduction of one fetus or more, unspecified trimester | — |
| O31.30X0 | Continuing pregnancy after elective fetal reduction of one fetus or more, unspecified trimester, not applicable or unspecified | ✓ |
| 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 | ✓ |
| O31.30X1 | 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 | ✓ |
| O31.30X2 | 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 | ✓ |
| O31.30X3 | 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 | ✓ |
| O31.30X4 | 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 | ✓ |
| O31.30X5 | 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 | ✓ |
| O31.30X9 | Continuing pregnancy after elective fetal reduction of one fetus or more, unspecified trimester, other fetus | ✓ |
| O31.31 | Continuing pregnancy after elective fetal reduction of one fetus or more, first trimester | — |
| O31.31 | Continuing pregnancy after elective fetal reduction of one fetus or more, first trimester | — |
| O31.31X0 | Continuing pregnancy after elective fetal reduction of one fetus or more, first trimester, not applicable or unspecified | ✓ |
| 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 | ✓ |
| O31.31X1 | 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 | ✓ |
| O31.31X2 | 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 | ✓ |
| O31.31X3 | 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 | ✓ |
| O31.31X4 | 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 | ✓ |
| O31.31X5 | 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 | ✓ |
| O31.31X9 | Continuing pregnancy after elective fetal reduction of one fetus or more, first trimester, other fetus | ✓ |
| O31.32 | Continuing pregnancy after elective fetal reduction of one fetus or more, second trimester | — |
| O31.32 | Continuing pregnancy after elective fetal reduction of one fetus or more, second trimester | — |
| O31.32X0 | Continuing pregnancy after elective fetal reduction of one fetus or more, second trimester, not applicable or unspecified | ✓ |
| 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 | ✓ |
| O31.32X1 | 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 | ✓ |
| O31.32X2 | 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 | ✓ |
| O31.32X3 | 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 | ✓ |
| O31.32X4 | 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 | ✓ |
| O31.32X5 | 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 | ✓ |
| O31.32X9 | Continuing pregnancy after elective fetal reduction of one fetus or more, second trimester, other fetus | ✓ |
| O31.33 | Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester | — |
| O31.33 | Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester | — |
| O31.33X0 | Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester, not applicable or unspecified | ✓ |
| 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 | ✓ |
| O31.33X1 | 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 | ✓ |
| O31.33X2 | 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 | ✓ |
| O31.33X3 | 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 | ✓ |
| O31.33X4 | 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 | ✓ |
| O31.33X5 | 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 | ✓ |
| O31.33X9 | Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester, other fetus | ✓ |
| O31.40 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, unspecified trimester | — |
| 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 | ✓ |
| O31.41 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, first trimester | — |
| 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 | ✓ |
| O31.42 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, second trimester | — |
| 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 | ✓ |
| O31.43 | Continuing pregnancy after vanishing twin syndrome of one fetus or more, third trimester | — |
| 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 | ✓ |
Frequently asked questions
What is ICD-10-CM code O31?
O31 is an ICD-10-CM category covering Complications specific to multiple gestation. It contains 365 more specific diagnosis codes, 308 of which are billable.
Is O31 a billable code?
No — O31 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example O31.0 — Papyraceous fetus). 308 of the 365 codes under O31 are billable.
What codes fall under O31?
O31 includes O31.0, O31.0, O31.00, O31.00, O31.00X0, plus 360 more. See the full list with descriptions and billable status above.
More free billing tools: all ICD-10 categories · ICD-10 search · denial codes · Medicare fees
Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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