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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