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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  • O36.8219|

    Fetal anemia and thrombocytopenia, first trimester, other fetus

  • O36.822|

    Fetal anemia and thrombocytopenia, second trimester

  • O36.8220|

    Fetal anemia and thrombocytopenia, second trimester, not applicable or unspecified

  • O36.8221|

    Fetal anemia and thrombocytopenia, second trimester, fetus 1

  • O36.8222|

    Fetal anemia and thrombocytopenia, second trimester, fetus 2

  • O36.8223|

    Fetal anemia and thrombocytopenia, second trimester, fetus 3

  • O36.8224|

    Fetal anemia and thrombocytopenia, second trimester, fetus 4

  • O36.8225|

    Fetal anemia and thrombocytopenia, second trimester, fetus 5

  • O36.8229|

    Fetal anemia and thrombocytopenia, second trimester, other fetus

  • O36.823|

    Fetal anemia and thrombocytopenia, third trimester

  • O36.8230|

    Fetal anemia and thrombocytopenia, third trimester, not applicable or unspecified

  • O36.8231|

    Fetal anemia and thrombocytopenia, third trimester, fetus 1

  • O36.8232|

    Fetal anemia and thrombocytopenia, third trimester, fetus 2

  • O36.8233|

    Fetal anemia and thrombocytopenia, third trimester, fetus 3

  • O36.8234|

    Fetal anemia and thrombocytopenia, third trimester, fetus 4

  • O36.8235|

    Fetal anemia and thrombocytopenia, third trimester, fetus 5

  • O36.8239|

    Fetal anemia and thrombocytopenia, third trimester, other fetus

  • O36.829|

    Fetal anemia and thrombocytopenia, unspecified trimester

  • O36.8290|

    Fetal anemia and thrombocytopenia, unspecified trimester, not applicable or unspecified

  • O36.8291|

    Fetal anemia and thrombocytopenia, unspecified trimester, fetus 1

  • O36.8292|

    Fetal anemia and thrombocytopenia, unspecified trimester, fetus 2

  • O36.8293|

    Fetal anemia and thrombocytopenia, unspecified trimester, fetus 3

  • O36.8294|

    Fetal anemia and thrombocytopenia, unspecified trimester, fetus 4

  • O36.8295|

    Fetal anemia and thrombocytopenia, unspecified trimester, fetus 5

  • O36.8299|

    Fetal anemia and thrombocytopenia, unspecified trimester, other fetus

  • O36.83|

    Maternal care for abnormalities of the fetal heart rate or rhythm

  • O36.831|

    Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester

  • O36.8310|

    Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, not applicable or unspecified

  • O36.8311|

    Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, fetus 1

  • O36.8312|

    Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, fetus 2

  • O36.8313|

    Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, fetus 3

  • O36.8314|

    Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, fetus 4

  • O36.8315|

    Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, fetus 5

  • O36.8319|

    Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester, other fetus

  • O36.832|

    Maternal care for abnormalities of the fetal heart rate or rhythm, second trimester

  • O36.8320|

    Maternal care for abnormalities of the fetal heart rate or rhythm, second trimester, not applicable or unspecified

  • O36.8321|

    Maternal care for abnormalities of the fetal heart rate or rhythm, second trimester, fetus 1

  • O36.8322|

    Maternal care for abnormalities of the fetal heart rate or rhythm, second trimester, fetus 2

  • O36.8323|

    Maternal care for abnormalities of the fetal heart rate or rhythm, second trimester, fetus 3

  • O36.8324|

    Maternal care for abnormalities of the fetal heart rate or rhythm, second trimester, fetus 4

  • O36.8325|

    Maternal care for abnormalities of the fetal heart rate or rhythm, second trimester, fetus 5

  • O36.8329|

    Maternal care for abnormalities of the fetal heart rate or rhythm, second trimester, other fetus

  • O36.833|

    Maternal care for abnormalities of the fetal heart rate or rhythm, third trimester

  • O36.8330|

    Maternal care for abnormalities of the fetal heart rate or rhythm, third trimester, not applicable or unspecified

  • O36.8331|

    Maternal care for abnormalities of the fetal heart rate or rhythm, third trimester, fetus 1

  • O36.8332|

    Maternal care for abnormalities of the fetal heart rate or rhythm, third trimester, fetus 2

  • O36.8333|

    Maternal care for abnormalities of the fetal heart rate or rhythm, third trimester, fetus 3

  • O36.8334|

    Maternal care for abnormalities of the fetal heart rate or rhythm, third trimester, fetus 4

  • O36.8335|

    Maternal care for abnormalities of the fetal heart rate or rhythm, third trimester, fetus 5

  • O36.8339|

    Maternal care for abnormalities of the fetal heart rate or rhythm, third trimester, other fetus

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