ICD-10-CM 2027 diagnosis code
O30.1Triplet pregnancy
O30.1 is a header code, so it can't be reported by itself. Choose one of the 5 more specific codes beneath it.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About O30.1
O30.1 is the ICD-10-CM diagnosis code for triplet pregnancy. It belongs to category O30 (multiple gestation), block O30-O48 (maternal care related to the fetus and amniotic cavity and possible delivery problems) and chapter 15 (pregnancy, childbirth and the puerperium). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.
Within O30 (multiple gestation), O30.1 is specifically for triplet pregnancy. Related codes cover twin pregnancy (O30.0), Quadruplet pregnancy (O30.2), other specified multiple gestation (O30.8) and unspecified (O30.9).
To report this condition, pick the subcode that matches the documentation: O30.10 (unspecified number of placenta and unspecified number of amniotic sacs), O30.11 (with two or more monochorionic fetuses), O30.12 (with two or more monoamniotic fetuses), O30.13 (trichorionic/triamniotic) and O30.19 (unable to determine number of placenta and number of amniotic sacs).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under O30.1
- O30.10Triplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs
- O30.101Triplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, first trimesterBillable
- O30.102Triplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, second trimesterBillable
- O30.103Triplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, third trimesterBillable
- O30.109Triplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, unspecified trimesterBillable
- O30.11Triplet pregnancy with two or more monochorionic fetuses
- O30.111Triplet pregnancy with two or more monochorionic fetuses, first trimesterBillable
- O30.112Triplet pregnancy with two or more monochorionic fetuses, second trimesterBillable
- O30.113Triplet pregnancy with two or more monochorionic fetuses, third trimesterBillable
- O30.119Triplet pregnancy with two or more monochorionic fetuses, unspecified trimesterBillable
- O30.12Triplet pregnancy with two or more monoamniotic fetuses
- O30.121Triplet pregnancy with two or more monoamniotic fetuses, first trimesterBillable
- O30.122Triplet pregnancy with two or more monoamniotic fetuses, second trimesterBillable
- O30.123Triplet pregnancy with two or more monoamniotic fetuses, third trimesterBillable
- O30.129Triplet pregnancy with two or more monoamniotic fetuses, unspecified trimesterBillable
- O30.13Triplet pregnancy, trichorionic/triamniotic
- O30.131Triplet pregnancy, trichorionic/triamniotic, first trimesterBillable
- O30.132Triplet pregnancy, trichorionic/triamniotic, second trimesterBillable
- O30.133Triplet pregnancy, trichorionic/triamniotic, third trimesterBillable
- O30.139Triplet pregnancy, trichorionic/triamniotic, unspecified trimesterBillable
- O30.19Triplet pregnancy, unable to determine number of placenta and number of amniotic sacs
- O30.191Triplet pregnancy, unable to determine number of placenta and number of amniotic sacs, first trimesterBillable
- O30.192Triplet pregnancy, unable to determine number of placenta and number of amniotic sacs, second trimesterBillable
- O30.193Triplet pregnancy, unable to determine number of placenta and number of amniotic sacs, third trimesterBillable
- O30.199Triplet pregnancy, unable to determine number of placenta and number of amniotic sacs, unspecified trimesterBillable
Notes that apply from higher levels
Instructions written at a parent level also apply to O30.1.
› From O30 Multiple gestation
- any complications specific to multiple gestation
Broader instructions also apply from Chapter 15: Pregnancy, childbirth and the puerperium.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about O30.1
Is O30.1 billable?
- No. O30.1 is a header code. Report one of its more specific subcodes instead.