O24
⚠ Non-billable (Header)Diabetes mellitus in pregnancy, childbirth, and the puerperium
Pregnancy, childbirth and the puerperium (O00-O9A)
⚠️ This is a category header code — not billable. Use a more specific child code below.
✅ No additional coding notes for O24
Child Codes (6)
O24.0Pre-existing type 1 diabetes mellitus, in pregnancy, childbirth and the puerperiumO24.1Pre-existing type 2 diabetes mellitus, in pregnancy, childbirth and the puerperiumO24.3Unspecified pre-existing diabetes mellitus in pregnancy, childbirth and the puerperiumO24.4Gestational diabetes mellitusO24.8Other pre-existing diabetes mellitus in pregnancy, childbirth, and the puerperiumO24.9Unspecified diabetes mellitus in pregnancy, childbirth and the puerperium
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CodeO24
BillableNo — Header code
CategoryPregnancy, childbirth and the puerperium (O00-O9A)
Excludes10 rule(s)
Excludes20 note(s)
Child codes6
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)