O09.21
⚠ Non-billable (Header)Supervision of pregnancy with history of pre-term labor
Pregnancy, childbirth and the puerperium (O00-O9A)
⚠️ This is a category header code — not billable. Use a more specific child code below.
⚠️ Excludes2
inherited from O09.2Rules from parent category O09.2: Supervision of pregnancy with other poor reproductive or obstetric history
- • pregnancy care for patient with history of recurrent pregnancy loss (O26.2-)
Child Codes (4)
O09.211Supervision of pregnancy with history of pre-term labor, first trimesterO09.212Supervision of pregnancy with history of pre-term labor, second trimesterO09.213Supervision of pregnancy with history of pre-term labor, third trimesterO09.219Supervision of pregnancy with history of pre-term labor, unspecified trimester
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CodeO09.21
BillableNo — Header code
ParentO09.2
CategoryPregnancy, childbirth and the puerperium (O00-O9A)
Excludes10 rule(s)
Excludes21 note(s)
Child codes4
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)