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O30.03

⚠ Non-billable (Header)

Twin pregnancy, monochorionic/diamniotic

Pregnancy, childbirth and the puerperium (O00-O9A)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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Also Known As

Twin pregnancy, one placenta, two amniotic sacs
✅ No additional coding notes for O30.03

Child Codes (4)

O30.031Twin pregnancy, monochorionic/diamniotic, first trimesterO30.032Twin pregnancy, monochorionic/diamniotic, second trimesterO30.033Twin pregnancy, monochorionic/diamniotic, third trimesterO30.039Twin pregnancy, monochorionic/diamniotic, unspecified trimester

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Code Information

CodeO30.03
BillableNo — Header code
ParentO30.0
CategoryPregnancy, childbirth and the puerperium (O00-O9A)
Excludes10 rule(s)
Excludes20 note(s)
Child codes4

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)