O31.13: Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester
O31.13 is a non-billable header ICD-10-CM code for continuing pregnancy after spontaneous abortion of one fetus or more, third trimester. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 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.
- 0
- not applicable or unspecified
- 1
- fetus 1
- 2
- fetus 2
- 3
- fetus 3
- 4
- fetus 4
- 5
- fetus 5
- 9
- other fetus
Excludes2 inherited from the categories above O31.13
Not part of this code, but both may be coded when both are present.
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead O31.13
7 child codes. Green means billable.
- O31.13X0Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, not applicable or unspecified
- O31.13X1Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, fetus 1
- O31.13X2Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, fetus 2
- O31.13X3Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, fetus 3
- O31.13X4Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, fetus 4
- O31.13X5Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, fetus 5
- O31.13X9Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, other fetus