2024 ICD-10-CM Diagnosis Code O31.8X9

Other complications specific to multiple gestation, unspecified trimester

ICD-10-CM Code:
O31.8X9
ICD-10 Code for:
Oth comp specific to multiple gestation, unsp trimester
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Pregnancy, childbirth and the puerperium
    (O00-O9A)
    • Maternal care related to the fetus and amniotic cavity and possible delivery problems
      (O30-O48)
      • Complications specific to multiple gestation
        (O31)

O31.8X9 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of other complications specific to multiple gestation, unspecified trimester. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Unspecified diagnosis codes like O31.8X9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Specific Coding Applicable to Oth comp specific to multiple gestation, unsp trimester

Non-specific codes like O31.8X9 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for oth comp specific to multiple gestation, unsp trimester:

  • Use O31.8X90 for not applicable or unspecified - BILLABLE CODE

  • Use O31.8X91 for fetus 1 - BILLABLE CODE

  • Use O31.8X92 for fetus 2 - BILLABLE CODE

  • Use O31.8X93 for fetus 3 - BILLABLE CODE

  • Use O31.8X94 for fetus 4 - BILLABLE CODE

  • Use O31.8X95 for fetus 5 - BILLABLE CODE

  • Use O31.8X99 for other fetus - BILLABLE CODE

Patient Education


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


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.