MCMedicalCodingSoftware
O31.3

O31.3: Continuing pregnancy after elective fetal reduction of one fetus or more

Non-billable headerICD-10-CM

O31.3 is a non-billable header ICD-10-CM code for continuing pregnancy after elective fetal reduction of one fetus or more. 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

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Continuing pregnancy after selective termination of one fetus or more

Excludes2 inherited from the categories above O31.3

Not part of this code, but both may be coded when both are present.

Written on O31: Complications specific to multiple gestation

  • delayed delivery of second twin, triplet, etc. (O63.2)
  • malpresentation of one fetus or more (O32.9)
  • placental transfusion syndromes (O43.0-)

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 O31.3

4 child codes. Green means billable.

Other codes under O31

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.