O30.031
✓ Billable
Twin pregnancy, monochorionic/diamniotic, first trimester
ICD-10-CM · FY2026 · Pregnancy, Childbirth and the Puerperium
Code
O30.031
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Pregnancy, Childbirth and the Puerperium
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code O30.031?
ICD-10-CM code O30.031 represents Twin pregnancy, monochorionic/diamniotic, first trimester. It is a billable diagnosis code in the Pregnancy, Childbirth and the Puerperium chapter, effective October 1, 2025 – September 30, 2026.
Is O30.031 billable?
Yes. O30.031 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is O30.031 in?
O30.031 belongs to the Pregnancy, Childbirth and the Puerperium chapter (O00–O9A) of ICD-10-CM.
Related codes in the O30 category
O30
Multiple gestation
Non-billable
O30.0
Twin pregnancy
Non-billable
O30.1
Triplet pregnancy
Non-billable
O30.2
Quadruplet pregnancy
Non-billable
O30.8
Other specified multiple gestation
Non-billable
O30.9
Multiple gestation, unspecified
Non-billable
O30.00
Twin pregnancy, unspecified number of placenta and unspecified number of amniotic sacs
Non-billable
O30.01
Twin pregnancy, monochorionic/monoamniotic
Non-billable
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