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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  • O43.109—

    Malformation of placenta, unspecified, unspecified trimester

  • O43.11—

    Circumvallate placenta

  • O43.111—

    Circumvallate placenta, first trimester

  • O43.112—

    Circumvallate placenta, second trimester

  • O43.113—

    Circumvallate placenta, third trimester

  • O43.119—

    Circumvallate placenta, unspecified trimester

  • O43.12—

    Velamentous insertion of umbilical cord

  • O43.121—

    Velamentous insertion of umbilical cord, first trimester

  • O43.122—

    Velamentous insertion of umbilical cord, second trimester

  • O43.123—

    Velamentous insertion of umbilical cord, third trimester

  • O43.129—

    Velamentous insertion of umbilical cord, unspecified trimester

  • O43.19—

    Other malformation of placenta

  • O43.191—

    Other malformation of placenta, first trimester

  • O43.192—

    Other malformation of placenta, second trimester

  • O43.193—

    Other malformation of placenta, third trimester

  • O43.199—

    Other malformation of placenta, unspecified trimester

  • O43.2—

    Morbidly adherent placenta

  • O43.21—

    Placenta accreta

  • O43.211—

    Placenta accreta, first trimester

  • O43.212—

    Placenta accreta, second trimester

  • O43.213—

    Placenta accreta, third trimester

  • O43.219—

    Placenta accreta, unspecified trimester

  • O43.22—

    Placenta increta

  • O43.221—

    Placenta increta, first trimester

  • O43.222—

    Placenta increta, second trimester

  • O43.223—

    Placenta increta, third trimester

  • O43.229—

    Placenta increta, unspecified trimester

  • O43.23—

    Placenta percreta

  • O43.231—

    Placenta percreta, first trimester

  • O43.232—

    Placenta percreta, second trimester

  • O43.233—

    Placenta percreta, third trimester

  • O43.239—

    Placenta percreta, unspecified trimester

  • O43.8—

    Other placental disorders

  • O43.81—

    Placental infarction

  • O43.811—

    Placental infarction, first trimester

  • O43.812—

    Placental infarction, second trimester

  • O43.813—

    Placental infarction, third trimester

  • O43.819—

    Placental infarction, unspecified trimester

  • O43.89—

    Other placental disorders

  • O43.891—

    Other placental disorders, first trimester

  • O43.892—

    Other placental disorders, second trimester

  • O43.893—

    Other placental disorders, third trimester

  • O43.899—

    Other placental disorders, unspecified trimester

  • O43.9—

    Unspecified placental disorder

  • O43.90—

    Unspecified placental disorder, unspecified trimester

  • O43.91—

    Unspecified placental disorder, first trimester

  • O43.92—

    Unspecified placental disorder, second trimester

  • O43.93—

    Unspecified placental disorder, third trimester

  • O44—

    Placenta previa

  • O44.0—

    Complete placenta previa NOS or without hemorrhage

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