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ICD-10-CM · FY 2026 APRIL UPDATE

O30.0

Twin pregnancy

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
O30.00Twin pregnancy, unspecified number of placenta and unspecified number of amniotic sacsCategory
O30.001Twin pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, first trimesterBillable
O30.002Twin pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, second trimesterBillable
O30.003Twin pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, third trimesterBillable
O30.009Twin pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, unspecified trimesterBillable
O30.01Twin pregnancy, monochorionic/monoamnioticCategory
O30.011Twin pregnancy, monochorionic/monoamniotic, first trimesterBillable
O30.012Twin pregnancy, monochorionic/monoamniotic, second trimesterBillable
O30.013Twin pregnancy, monochorionic/monoamniotic, third trimesterBillable
O30.019Twin pregnancy, monochorionic/monoamniotic, unspecified trimesterBillable
O30.02Conjoined twin pregnancyCategory
O30.021Conjoined twin pregnancy, first trimesterBillable
O30.022Conjoined twin pregnancy, second trimesterBillable
O30.023Conjoined twin pregnancy, third trimesterBillable
O30.029Conjoined twin pregnancy, unspecified trimesterBillable
O30.03Twin pregnancy, monochorionic/diamnioticCategory
O30.031Twin pregnancy, monochorionic/diamniotic, first trimesterBillable
O30.032Twin pregnancy, monochorionic/diamniotic, second trimesterBillable
O30.033Twin pregnancy, monochorionic/diamniotic, third trimesterBillable
O30.039Twin pregnancy, monochorionic/diamniotic, unspecified trimesterBillable
O30.04Twin pregnancy, dichorionic/diamnioticCategory
O30.041Twin pregnancy, dichorionic/diamniotic, first trimesterBillable
O30.042Twin pregnancy, dichorionic/diamniotic, second trimesterBillable
O30.043Twin pregnancy, dichorionic/diamniotic, third trimesterBillable
O30.049Twin pregnancy, dichorionic/diamniotic, unspecified trimesterBillable
O30.09Twin pregnancy, unable to determine number of placenta and number of amniotic sacsCategory
O30.091Twin pregnancy, unable to determine number of placenta and number of amniotic sacs, first trimesterBillable
O30.092Twin pregnancy, unable to determine number of placenta and number of amniotic sacs, second trimesterBillable
O30.093Twin pregnancy, unable to determine number of placenta and number of amniotic sacs, third trimesterBillable
O30.099Twin pregnancy, unable to determine number of placenta and number of amniotic sacs, unspecified trimesterBillable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.