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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  • O40.9XX0|

    Polyhydramnios, unspecified trimester, not applicable or unspecified

  • O40.9XX1|

    Polyhydramnios, unspecified trimester, fetus 1

  • O40.9XX2|

    Polyhydramnios, unspecified trimester, fetus 2

  • O40.9XX3|

    Polyhydramnios, unspecified trimester, fetus 3

  • O40.9XX4|

    Polyhydramnios, unspecified trimester, fetus 4

  • O40.9XX5|

    Polyhydramnios, unspecified trimester, fetus 5

  • O40.9XX9|

    Polyhydramnios, unspecified trimester, other fetus

  • O41|

    Other disorders of amniotic fluid and membranes

  • O41.0|

    Oligohydramnios

  • O41.00|

    Oligohydramnios, unspecified trimester

  • O41.00X0|

    Oligohydramnios, unspecified trimester, not applicable or unspecified

  • O41.00X1|

    Oligohydramnios, unspecified trimester, fetus 1

  • O41.00X2|

    Oligohydramnios, unspecified trimester, fetus 2

  • O41.00X3|

    Oligohydramnios, unspecified trimester, fetus 3

  • O41.00X4|

    Oligohydramnios, unspecified trimester, fetus 4

  • O41.00X5|

    Oligohydramnios, unspecified trimester, fetus 5

  • O41.00X9|

    Oligohydramnios, unspecified trimester, other fetus

  • O41.01|

    Oligohydramnios, first trimester

  • O41.01X0|

    Oligohydramnios, first trimester, not applicable or unspecified

  • O41.01X1|

    Oligohydramnios, first trimester, fetus 1

  • O41.01X2|

    Oligohydramnios, first trimester, fetus 2

  • O41.01X3|

    Oligohydramnios, first trimester, fetus 3

  • O41.01X4|

    Oligohydramnios, first trimester, fetus 4

  • O41.01X5|

    Oligohydramnios, first trimester, fetus 5

  • O41.01X9|

    Oligohydramnios, first trimester, other fetus

  • O41.02|

    Oligohydramnios, second trimester

  • O41.02X0|

    Oligohydramnios, second trimester, not applicable or unspecified

  • O41.02X1|

    Oligohydramnios, second trimester, fetus 1

  • O41.02X2|

    Oligohydramnios, second trimester, fetus 2

  • O41.02X3|

    Oligohydramnios, second trimester, fetus 3

  • O41.02X4|

    Oligohydramnios, second trimester, fetus 4

  • O41.02X5|

    Oligohydramnios, second trimester, fetus 5

  • O41.02X9|

    Oligohydramnios, second trimester, other fetus

  • O41.03|

    Oligohydramnios, third trimester

  • O41.03X0|

    Oligohydramnios, third trimester, not applicable or unspecified

  • O41.03X1|

    Oligohydramnios, third trimester, fetus 1

  • O41.03X2|

    Oligohydramnios, third trimester, fetus 2

  • O41.03X3|

    Oligohydramnios, third trimester, fetus 3

  • O41.03X4|

    Oligohydramnios, third trimester, fetus 4

  • O41.03X5|

    Oligohydramnios, third trimester, fetus 5

  • O41.03X9|

    Oligohydramnios, third trimester, other fetus

  • O41.1|

    Infection of amniotic sac and membranes

  • O41.10|

    Infection of amniotic sac and membranes, unspecified

  • O41.101|

    Infection of amniotic sac and membranes, unspecified, first trimester

  • O41.1010|

    Infection of amniotic sac and membranes, unspecified, first trimester, not applicable or unspecified

  • O41.1011|

    Infection of amniotic sac and membranes, unspecified, first trimester, fetus 1

  • O41.1012|

    Infection of amniotic sac and membranes, unspecified, first trimester, fetus 2

  • O41.1013|

    Infection of amniotic sac and membranes, unspecified, first trimester, fetus 3

  • O41.1014|

    Infection of amniotic sac and membranes, unspecified, first trimester, fetus 4

  • O41.1015|

    Infection of amniotic sac and membranes, unspecified, first trimester, fetus 5

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