O24.311
✓ BillableUnspecified pre-existing diabetes mellitus in pregnancy, first trimester
Pregnancy, childbirth and the puerperium (O00-O9A)
✅ No additional coding notes for O24.311
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CodeO24.311
BillableYes
ParentO24.31
CategoryPregnancy, childbirth and the puerperium (O00-O9A)
Excludes10 rule(s)
Excludes20 note(s)
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)