2026 ICD-10-CM Diagnosis Code O30Multiple gestation

ICD-10-CM Codes›O00-O9A›O30-O48›O30

ICD-10-CM O30
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

O30 is a non-billable ICD-10-CM category code for multiple gestation, so it cannot be submitted on claims. Use a more specific code from this category instead, such as O30.001, O30.002, O30.003, and O30.009.

Code Identity

ICD-10-CM Code
O30
Billable Status
No — Non-Billable Category
Code Describes
Multiple gestation
Chapter
O30-O48
Maternal care related to the fetus and amniotic cavity and possible delivery problems

Code Classification

ChapterO00-O9APregnancy, childbirth and the puerperium
SectionO30-O48Maternal care related to the fetus and amniotic cavity and possible delivery problems
CategoryO30Multiple gestation
This CodeO30Multiple gestation

Specific Coding for Multiple gestationOverview

Non-specific codes like O30 require more characters. Use one of these billable codes instead:

  • O30.0 for Twin pregnancy

  • O30.00 for Twin pregnancy, unspecified number of placenta and unspecified number of amniotic sacs

  • O30.01 for Twin pregnancy, monochorionic/monoamniotic

  • O30.02 for Conjoined twin pregnancy

  • O30.03 for Twin pregnancy, monochorionic/diamniotic

  • O30.04 for Twin pregnancy, dichorionic/diamniotic

  • O30.09 for Twin pregnancy, unable to determine number of placenta and number of amniotic sacs

  • O30.1 for Triplet pregnancy

  • O30.10 for Triplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs

  • O30.11 for Triplet pregnancy with two or more monochorionic fetuses

  • O30.12 for Triplet pregnancy with two or more monoamniotic fetuses

  • O30.13 for Triplet pregnancy, trichorionic/triamniotic

  • O30.19 for Triplet pregnancy, unable to determine number of placenta and number of amniotic sacs

  • O30.2 for Quadruplet pregnancy

  • O30.20 for Quadruplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs

  • O30.21 for Quadruplet pregnancy with two or more monochorionic fetuses

  • O30.22 for Quadruplet pregnancy with two or more monoamniotic fetuses

  • O30.23 for Quadruplet pregnancy, quadrachorionic/quadra-amniotic

  • O30.29 for Quadruplet pregnancy, unable to determine number of placenta and number of amniotic sacs

  • O30.8 for Other specified multiple gestation

  • O30.80 for Other specified multiple gestation, unspecified number of placenta and unspecified number of amniotic sacs

  • O30.81 for Other specified multiple gestation with two or more monochorionic fetuses

  • O30.82 for Other specified multiple gestation with two or more monoamniotic fetuses

  • O30.83 for Other specified multiple gestation, number of chorions and amnions are both equal to the number of fetuses

  • O30.89 for Other specified multiple gestation, unable to determine number of placenta and number of amniotic sacs

  • O30.9 for Multiple gestation, unspecified

  • Use O30.90 for Multiple gestation, unspecified, unspecified trimester

  • Use O30.91 for Multiple gestation, unspecified, first trimester

  • Use O30.92 for Multiple gestation, unspecified, second trimester

  • Use O30.93 for Multiple gestation, unspecified, third trimester

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Code Also

  • any complications specific to multiple gestation

Clinical InformationClinical

  • Multiple Gestation

    a pregnancy involving twins or higher-order multiple fetuses (e.g., triplets, quadruplets).

Patient EducationClinical

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.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About O30Overview

Is O30 (Multiple gestation) a billable code?

No. This is a category header that groups the codes for multiple gestation, and headers cannot be submitted on claims. Claims for multiple gestation need a more specific code from this category, such as O30.001, O30.002, and O30.003.