All ICD10 Codes
Chapter 15

O00–O9A: Pregnancy, Childbirth and the Puerperium

Pregnancy, Childbirth and the Puerperium diagnostic classification updated for 2026.

Chapter Instructions

Excludes1(Not coded here. Use a different code.)
  • supervision of normal pregnancy (Z34.-)
Excludes2(Not included here. Code separately if applicable.)
  • mental and behavioral disorders associated with the puerperium (F53.-)
  • obstetrical tetanus (A34)
  • postpartum necrosis of pituitary gland (E23.0)
  • puerperal osteomalacia (M83.0)
Use Additional Code
  • code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
All CodesBillable Only
Internal Codes
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  • O44.31—

    Partial placenta previa with hemorrhage, first trimester

  • O44.32—

    Partial placenta previa with hemorrhage, second trimester

  • O44.33—

    Partial placenta previa with hemorrhage, third trimester

  • O44.40—

    Low lying placenta NOS or without hemorrhage, unspecified trimester

  • O44.41—

    Low lying placenta NOS or without hemorrhage, first trimester

  • O44.42—

    Low lying placenta NOS or without hemorrhage, second trimester

  • O44.43—

    Low lying placenta NOS or without hemorrhage, third trimester

  • O44.50—

    Low lying placenta with hemorrhage, unspecified trimester

  • O44.51—

    Low lying placenta with hemorrhage, first trimester

  • O44.52—

    Low lying placenta with hemorrhage, second trimester

  • O44.53—

    Low lying placenta with hemorrhage, third trimester

  • O45.001—

    Premature separation of placenta with coagulation defect, unspecified, first trimester

  • O45.002—

    Premature separation of placenta with coagulation defect, unspecified, second trimester

  • O45.003—

    Premature separation of placenta with coagulation defect, unspecified, third trimester

  • O45.009—

    Premature separation of placenta with coagulation defect, unspecified, unspecified trimester

  • O45.011—

    Premature separation of placenta with afibrinogenemia, first trimester

  • O45.012—

    Premature separation of placenta with afibrinogenemia, second trimester

  • O45.013—

    Premature separation of placenta with afibrinogenemia, third trimester

  • O45.019—

    Premature separation of placenta with afibrinogenemia, unspecified trimester

  • O45.021—

    Premature separation of placenta with disseminated intravascular coagulation, first trimester

  • O45.022—

    Premature separation of placenta with disseminated intravascular coagulation, second trimester

  • O45.023—

    Premature separation of placenta with disseminated intravascular coagulation, third trimester

  • O45.029—

    Premature separation of placenta with disseminated intravascular coagulation, unspecified trimester

  • O45.091—

    Premature separation of placenta with other coagulation defect, first trimester

  • O45.092—

    Premature separation of placenta with other coagulation defect, second trimester

  • O45.093—

    Premature separation of placenta with other coagulation defect, third trimester

  • O45.099—

    Premature separation of placenta with other coagulation defect, unspecified trimester

  • O45.8X1—

    Other premature separation of placenta, first trimester

  • O45.8X2—

    Other premature separation of placenta, second trimester

  • O45.8X3—

    Other premature separation of placenta, third trimester

  • O45.8X9—

    Other premature separation of placenta, unspecified trimester

  • O45.90—

    Premature separation of placenta, unspecified, unspecified trimester

  • O45.91—

    Premature separation of placenta, unspecified, first trimester

  • O45.92—

    Premature separation of placenta, unspecified, second trimester

  • O45.93—

    Premature separation of placenta, unspecified, third trimester

  • O46.001—

    Antepartum hemorrhage with coagulation defect, unspecified, first trimester

  • O46.002—

    Antepartum hemorrhage with coagulation defect, unspecified, second trimester

  • O46.003—

    Antepartum hemorrhage with coagulation defect, unspecified, third trimester

  • O46.009—

    Antepartum hemorrhage with coagulation defect, unspecified, unspecified trimester

  • O46.011—

    Antepartum hemorrhage with afibrinogenemia, first trimester

  • O46.012—

    Antepartum hemorrhage with afibrinogenemia, second trimester

  • O46.013—

    Antepartum hemorrhage with afibrinogenemia, third trimester

  • O46.019—

    Antepartum hemorrhage with afibrinogenemia, unspecified trimester

  • O46.021—

    Antepartum hemorrhage with disseminated intravascular coagulation, first trimester

  • O46.022—

    Antepartum hemorrhage with disseminated intravascular coagulation, second trimester

  • O46.023—

    Antepartum hemorrhage with disseminated intravascular coagulation, third trimester

  • O46.029—

    Antepartum hemorrhage with disseminated intravascular coagulation, unspecified trimester

  • O46.091—

    Antepartum hemorrhage with other coagulation defect, first trimester

  • O46.092—

    Antepartum hemorrhage with other coagulation defect, second trimester

  • O46.093—

    Antepartum hemorrhage with other coagulation defect, third trimester

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