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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  • O41.91X2—

    Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 2

  • O41.91X3—

    Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 3

  • O41.91X4—

    Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 4

  • O41.91X5—

    Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 5

  • O41.91X9—

    Disorder of amniotic fluid and membranes, unspecified, first trimester, other fetus

  • O41.92—

    Disorder of amniotic fluid and membranes, unspecified, second trimester

  • O41.92X0—

    Disorder of amniotic fluid and membranes, unspecified, second trimester, not applicable or unspecified

  • O41.92X1—

    Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 1

  • O41.92X2—

    Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 2

  • O41.92X3—

    Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 3

  • O41.92X4—

    Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 4

  • O41.92X5—

    Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 5

  • O41.92X9—

    Disorder of amniotic fluid and membranes, unspecified, second trimester, other fetus

  • O41.93—

    Disorder of amniotic fluid and membranes, unspecified, third trimester

  • O41.93X0—

    Disorder of amniotic fluid and membranes, unspecified, third trimester, not applicable or unspecified

  • O41.93X1—

    Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 1

  • O41.93X2—

    Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 2

  • O41.93X3—

    Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 3

  • O41.93X4—

    Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 4

  • O41.93X5—

    Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 5

  • O41.93X9—

    Disorder of amniotic fluid and membranes, unspecified, third trimester, other fetus

  • O42.00—

    Premature rupture of membranes, onset of labor within 24 hours of rupture, unspecified weeks of gestation

  • O42.011—

    Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, first trimester

  • O42.012—

    Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, second trimester

  • O42.013—

    Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, third trimester

  • O42.019—

    Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, unspecified trimester

  • O42.02—

    Full-term premature rupture of membranes, onset of labor within 24 hours of rupture

  • O42.10—

    Premature rupture of membranes, onset of labor more than 24 hours following rupture, unspecified weeks of gestation

  • O42.111—

    Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, first trimester

  • O42.112—

    Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, second trimester

  • O42.113—

    Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, third trimester

  • O42.119—

    Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, unspecified trimester

  • O42.12—

    Full-term premature rupture of membranes, onset of labor more than 24 hours following rupture

  • O42.90—

    Premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, unspecified weeks of gestation

  • O42.911—

    Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, first trimester

  • O42.912—

    Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, second trimester

  • O42.913—

    Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, third trimester

  • O42.919—

    Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, unspecified trimester

  • O42.92—

    Full-term premature rupture of membranes, unspecified as to length of time between rupture and onset of labor

  • O43.011—

    Fetomaternal placental transfusion syndrome, first trimester

  • O43.012—

    Fetomaternal placental transfusion syndrome, second trimester

  • O43.013—

    Fetomaternal placental transfusion syndrome, third trimester

  • O43.019—

    Fetomaternal placental transfusion syndrome, unspecified trimester

  • O43.021—

    Fetus-to-fetus placental transfusion syndrome, first trimester

  • O43.022—

    Fetus-to-fetus placental transfusion syndrome, second trimester

  • O43.023—

    Fetus-to-fetus placental transfusion syndrome, third trimester

  • O43.029—

    Fetus-to-fetus placental transfusion syndrome, unspecified trimester

  • O43.101—

    Malformation of placenta, unspecified, first trimester

  • O43.102—

    Malformation of placenta, unspecified, second trimester

  • O43.103—

    Malformation of placenta, unspecified, third trimester

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