ICD-10-CM 2027 diagnosis code

O30Multiple gestation

Not billable — use a more specific code

O30 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

O30 is the ICD-10-CM diagnosis code for multiple gestation. It belongs to 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.

To report this condition, pick the subcode that matches the documentation: O30.0 (pregnancy), O30.1 (pregnancy), O30.2 (pregnancy), O30.8 (gestation) and O30.9 (unspecified).

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

Coding notes

Code alsoTwo codes may be needed; sequencing depends on circumstances

any complications specific to multiple gestation

Notes that apply from higher levels

Instructions written at a parent level also apply to O30.

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

Is O30 billable?: No. O30 is a header code. Report one of its more specific subcodes instead.