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- One of the following 7th characters is to be assigned to each code under subcategory O60.2. 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 subcategory O60.2 that has a 7th character of 1 through 9.
- 0 not applicable or unspecified
- 1 fetus 1
- 2 fetus 2
- 3 fetus 3
- 4 fetus 4
- 5 fetus 5
- 9 other fetus
- O60.2 Term delivery with preterm labor
- O60.20 Term delivery with preterm labor, unspecified trimester
- O60.22 Term delivery with preterm labor, second trimester
- O60.23 Term delivery with preterm labor, third trimester
O61 Failed induction of labor
- O61.0 Failed medical induction of labor
- Failed induction (of labor) by oxytocin
- Failed induction (of labor) by prostaglandins
- O61.1 Failed instrumental induction of labor
- Failed mechanical induction (of labor)
- Failed surgical induction (of labor)
- O61.8 Other failed induction of labor
- O61.9 Failed induction of labor, unspecified
O62 Abnormalities of forces of labor
- O62.0 Primary inadequate contractions
- Failure of cervical dilatation
- Primary hypotonic uterine dysfunction
- Uterine inertia during latent phase of labor
- O62.1 Secondary uterine inertia
- Arrested active phase of labor
- Secondary hypotonic uterine dysfunction
- O62.2 Other uterine inertia
- Atony of uterus without hemorrhage
- Atony of uterus NOS
- Desultory labor
- Hypotonic uterine dysfunction NOS
- Irregular labor
- Poor contractions
- Slow slope active phase of labor
- Uterine inertia NOS
- Excludes1: atony of uterus with hemorrhage (postpartum) (O72.1)
