ICD-10-CM Code O31.8

Other complications specific to multiple gestation

Version 2020 Non-Billable Code

Not Valid for Submission

O31.8 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of other complications specific to multiple gestation. The code is NOT valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10:O31.8
Short Description:Other complications specific to multiple gestation
Long Description:Other complications specific to multiple gestation

Consider the following ICD-10 codes with a higher level of specificity:

  • O31.8X - Other complications specific to multiple gestation
  • O31.8X1 - ... first trimester
  • O31.8X10 - ... first trimester, not applicable or unspecified
  • O31.8X11 - ... first trimester, fetus 1
  • O31.8X12 - ... first trimester, fetus 2
  • O31.8X13 - ... first trimester, fetus 3
  • O31.8X14 - ... first trimester, fetus 4
  • O31.8X15 - ... first trimester, fetus 5
  • O31.8X19 - ... first trimester, other fetus
  • O31.8X2 - ... second trimester
  • O31.8X20 - ... second trimester, not applicable or unspecified
  • O31.8X21 - ... second trimester, fetus 1
  • O31.8X22 - ... second trimester, fetus 2
  • O31.8X23 - ... second trimester, fetus 3
  • O31.8X24 - ... second trimester, fetus 4
  • O31.8X25 - ... second trimester, fetus 5
  • O31.8X29 - ... second trimester, other fetus
  • O31.8X3 - ... third trimester
  • O31.8X30 - ... third trimester, not applicable or unspecified
  • O31.8X31 - ... third trimester, fetus 1
  • O31.8X32 - ... third trimester, fetus 2
  • O31.8X33 - ... third trimester, fetus 3
  • O31.8X34 - ... third trimester, fetus 4
  • O31.8X35 - ... third trimester, fetus 5
  • O31.8X39 - ... third trimester, other fetus
  • O31.8X9 - ... unspecified trimester
  • O31.8X90 - ... unspecified trimester, not applicable or unspecified
  • O31.8X91 - ... unspecified trimester, fetus 1
  • O31.8X92 - ... unspecified trimester, fetus 2
  • O31.8X93 - ... unspecified trimester, fetus 3
  • O31.8X94 - ... unspecified trimester, fetus 4
  • O31.8X95 - ... unspecified trimester, fetus 5
  • O31.8X99 - ... unspecified trimester, other fetus

Code Classification

  • Pregnancy, childbirth and the puerperium (O00–O99)
    • Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)
      • Complications specific to multiple gestation (O31)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Twins, Triplets, Multiple Births

If you are pregnant with more than one baby, you are far from alone. Multiple births are up in the United States. More women are having babies after age 30 and more are taking fertility drugs. Both boost the chance of carrying more than one baby. A family history of twins also makes multiples more likely.

Years ago, most twins came as a surprise. Now, most women know about a multiple pregnancy early. Women with multiple pregnancies should see their health care providers more often than women who are expecting one baby. Multiple pregnancy babies have a much higher risk of being born prematurely and having a low birth weight. There is also more of a risk of disabilities. Some women have to go on bed rest to delay labor. Finally, they may deliver by C-section, especially if there are three babies or more.

Parenting multiples can be a challenge. Volunteer help and support groups for parents of multiples can help.

Dept. of Health and Human Services Office on Women's Health


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