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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