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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  • O35.14X2—

    Maternal care for (suspected) chromosomal abnormality in fetus, Turner Syndrome, fetus 2

  • O35.14X3—

    Maternal care for (suspected) chromosomal abnormality in fetus, Turner Syndrome, fetus 3

  • O35.14X4—

    Maternal care for (suspected) chromosomal abnormality in fetus, Turner Syndrome, fetus 4

  • O35.14X5—

    Maternal care for (suspected) chromosomal abnormality in fetus, Turner Syndrome, fetus 5

  • O35.14X9—

    Maternal care for (suspected) chromosomal abnormality in fetus, Turner Syndrome, other fetus

  • O35.15—

    Maternal care for (suspected) chromosomal abnormality in fetus, sex chromosome abnormality

  • O35.15X0—

    Maternal care for (suspected) chromosomal abnormality in fetus, sex chromosome abnormality, not applicable or unspecified

  • O35.15X1—

    Maternal care for (suspected) chromosomal abnormality in fetus, sex chromosome abnormality, fetus 1

  • O35.15X2—

    Maternal care for (suspected) chromosomal abnormality in fetus, sex chromosome abnormality, fetus 2

  • O35.15X3—

    Maternal care for (suspected) chromosomal abnormality in fetus, sex chromosome abnormality, fetus 3

  • O35.15X4—

    Maternal care for (suspected) chromosomal abnormality in fetus, sex chromosome abnormality, fetus 4

  • O35.15X5—

    Maternal care for (suspected) chromosomal abnormality in fetus, sex chromosome abnormality, fetus 5

  • O35.15X9—

    Maternal care for (suspected) chromosomal abnormality in fetus, sex chromosome abnormality, other fetus

  • O35.19—

    Maternal care for (suspected) chromosomal abnormality in fetus, other chromosomal abnormality

  • O35.19X0—

    Maternal care for (suspected) chromosomal abnormality in fetus, other chromosomal abnormality, not applicable or unspecified

  • O35.19X1—

    Maternal care for (suspected) chromosomal abnormality in fetus, other chromosomal abnormality, fetus 1

  • O35.19X2—

    Maternal care for (suspected) chromosomal abnormality in fetus, other chromosomal abnormality, fetus 2

  • O35.19X3—

    Maternal care for (suspected) chromosomal abnormality in fetus, other chromosomal abnormality, fetus 3

  • O35.19X4—

    Maternal care for (suspected) chromosomal abnormality in fetus, other chromosomal abnormality, fetus 4

  • O35.19X5—

    Maternal care for (suspected) chromosomal abnormality in fetus, other chromosomal abnormality, fetus 5

  • O35.19X9—

    Maternal care for (suspected) chromosomal abnormality in fetus, other chromosomal abnormality, other fetus

  • O35.2—

    Maternal care for (suspected) hereditary disease in fetus

  • O35.2XX0—

    Maternal care for (suspected) hereditary disease in fetus, not applicable or unspecified

  • O35.2XX1—

    Maternal care for (suspected) hereditary disease in fetus, fetus 1

  • O35.2XX2—

    Maternal care for (suspected) hereditary disease in fetus, fetus 2

  • O35.2XX3—

    Maternal care for (suspected) hereditary disease in fetus, fetus 3

  • O35.2XX4—

    Maternal care for (suspected) hereditary disease in fetus, fetus 4

  • O35.2XX5—

    Maternal care for (suspected) hereditary disease in fetus, fetus 5

  • O35.2XX9—

    Maternal care for (suspected) hereditary disease in fetus, other fetus

  • O35.3—

    Maternal care for (suspected) damage to fetus from viral disease in mother

  • O35.3XX0—

    Maternal care for (suspected) damage to fetus from viral disease in mother, not applicable or unspecified

  • O35.3XX1—

    Maternal care for (suspected) damage to fetus from viral disease in mother, fetus 1

  • O35.3XX2—

    Maternal care for (suspected) damage to fetus from viral disease in mother, fetus 2

  • O35.3XX3—

    Maternal care for (suspected) damage to fetus from viral disease in mother, fetus 3

  • O35.3XX4—

    Maternal care for (suspected) damage to fetus from viral disease in mother, fetus 4

  • O35.3XX5—

    Maternal care for (suspected) damage to fetus from viral disease in mother, fetus 5

  • O35.3XX9—

    Maternal care for (suspected) damage to fetus from viral disease in mother, other fetus

  • O35.4—

    Maternal care for (suspected) damage to fetus from alcohol

  • O35.4XX0—

    Maternal care for (suspected) damage to fetus from alcohol, not applicable or unspecified

  • O35.4XX1—

    Maternal care for (suspected) damage to fetus from alcohol, fetus 1

  • O35.4XX2—

    Maternal care for (suspected) damage to fetus from alcohol, fetus 2

  • O35.4XX3—

    Maternal care for (suspected) damage to fetus from alcohol, fetus 3

  • O35.4XX4—

    Maternal care for (suspected) damage to fetus from alcohol, fetus 4

  • O35.4XX5—

    Maternal care for (suspected) damage to fetus from alcohol, fetus 5

  • O35.4XX9—

    Maternal care for (suspected) damage to fetus from alcohol, other fetus

  • O35.5—

    Maternal care for (suspected) damage to fetus by drugs

  • O35.5XX0—

    Maternal care for (suspected) damage to fetus by drugs, not applicable or unspecified

  • O35.5XX1—

    Maternal care for (suspected) damage to fetus by drugs, fetus 1

  • O35.5XX2—

    Maternal care for (suspected) damage to fetus by drugs, fetus 2

  • O35.5XX3—

    Maternal care for (suspected) damage to fetus by drugs, fetus 3

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