 O31 |
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Complications specific to multiple gestation  |
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| Excludes2 |
delayed delivery of second twin, triplet, etc. (O63.2)
malpresentation of one fetus or more (O32.9)
placental transfusion syndromes (O43.0-)
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| char7Note |
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.
|
| char7Def |
0: not applicable or unspecified
1: fetus 1
2: fetus 2
3: fetus 3
4: fetus 4
5: fetus 5
9: other fetus
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| O31.0 |
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Papyraceous fetus |
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 O31.00 |
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Papyraceous fetus, unspecified trimester |
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| O31.01 |
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Papyraceous fetus, first trimester |
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| O31.02 |
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Papyraceous fetus, second trimester |
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| O31.03 |
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Papyraceous fetus, third trimester |
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| O31.1 |
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Continuing pregnancy after spontaneous abortion of one fetus or more |
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| O31.10 |
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Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester |
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| O31.11 |
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Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester |
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| O31.12 |
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Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester |
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| O31.13 |
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Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester |
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| O31.2 |
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Continuing pregnancy after intrauterine death of one fetus or more |
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| O31.20 |
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Continuing pregnancy after intrauterine death of one fetus or more, unspecified trimester |
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| O31.21 |
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Continuing pregnancy after intrauterine death of one fetus or more, first trimester |
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| O31.22 |
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Continuing pregnancy after intrauterine death of one fetus or more, second trimester |
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| O31.23 |
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Continuing pregnancy after intrauterine death of one fetus or more, third trimester |
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| O31.3 |
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Continuing pregnancy after elective fetal reduction of one fetus or more |
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| Continuing pregnancy after selective termination of one fetus or more |
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| O31.30 |
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Continuing pregnancy after elective fetal reduction of one fetus or more, unspecified trimester |
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| O31.31 |
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Continuing pregnancy after elective fetal reduction of one fetus or more, first trimester |
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| O31.32 |
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Continuing pregnancy after elective fetal reduction of one fetus or more, second trimester |
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| O31.33 |
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Continuing pregnancy after elective fetal reduction of one fetus or more, third trimester |
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| O31.8 |
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Other complications specific to multiple gestation |
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| O31.8X |
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Other complications specific to multiple gestation |
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| O31.8X1 |
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Other complications specific to multiple gestation, first trimester |
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| O31.8X2 |
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Other complications specific to multiple gestation, second trimester |
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| O31.8X3 |
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Other complications specific to multiple gestation, third trimester |
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| O31.8X9 |
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Other complications specific to multiple gestation, unspecified trimester |
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