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ICD-10-CM · FY 2026 APRIL UPDATE

O31.1

Continuing pregnancy after spontaneous abortion of one fetus or more

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
O31.10Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimesterCategory
O31.10X0Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, not applicable or unspecifiedBillable
O31.10X1Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, fetus 1Billable
O31.10X2Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, fetus 2Billable
O31.10X3Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, fetus 3Billable
O31.10X4Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, fetus 4Billable
O31.10X5Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, fetus 5Billable
O31.10X9Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, other fetusBillable
O31.11Continuing pregnancy after spontaneous abortion of one fetus or more, first trimesterCategory
O31.11X0Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, not applicable or unspecifiedBillable
O31.11X1Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, fetus 1Billable
O31.11X2Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, fetus 2Billable
O31.11X3Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, fetus 3Billable
O31.11X4Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, fetus 4Billable
O31.11X5Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, fetus 5Billable
O31.11X9Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, other fetusBillable
O31.12Continuing pregnancy after spontaneous abortion of one fetus or more, second trimesterCategory
O31.12X0Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, not applicable or unspecifiedBillable
O31.12X1Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, fetus 1Billable
O31.12X2Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, fetus 2Billable
O31.12X3Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, fetus 3Billable
O31.12X4Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, fetus 4Billable
O31.12X5Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, fetus 5Billable
O31.12X9Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, other fetusBillable
O31.13Continuing pregnancy after spontaneous abortion of one fetus or more, third trimesterCategory
O31.13X0Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, not applicable or unspecifiedBillable
O31.13X1Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, fetus 1Billable
O31.13X2Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, fetus 2Billable
O31.13X3Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, fetus 3Billable
O31.13X4Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, fetus 4Billable

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.

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