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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  • O29.5X2—

    Other complications of spinal and epidural anesthesia during pregnancy, second trimester

  • O29.5X3—

    Other complications of spinal and epidural anesthesia during pregnancy, third trimester

  • O29.5X9—

    Other complications of spinal and epidural anesthesia during pregnancy, unspecified trimester

  • O29.6—

    Failed or difficult intubation for anesthesia during pregnancy

  • O29.60—

    Failed or difficult intubation for anesthesia during pregnancy, unspecified trimester

  • O29.61—

    Failed or difficult intubation for anesthesia during pregnancy, first trimester

  • O29.62—

    Failed or difficult intubation for anesthesia during pregnancy, second trimester

  • O29.63—

    Failed or difficult intubation for anesthesia during pregnancy, third trimester

  • O29.8—

    Other complications of anesthesia during pregnancy

  • O29.8X—

    Other complications of anesthesia during pregnancy

  • O29.8X1—

    Other complications of anesthesia during pregnancy, first trimester

  • O29.8X2—

    Other complications of anesthesia during pregnancy, second trimester

  • O29.8X3—

    Other complications of anesthesia during pregnancy, third trimester

  • O29.8X9—

    Other complications of anesthesia during pregnancy, unspecified trimester

  • O29.9—

    Unspecified complication of anesthesia during pregnancy

  • O29.90—

    Unspecified complication of anesthesia during pregnancy, unspecified trimester

  • O29.91—

    Unspecified complication of anesthesia during pregnancy, first trimester

  • O29.92—

    Unspecified complication of anesthesia during pregnancy, second trimester

  • O29.93—

    Unspecified complication of anesthesia during pregnancy, third trimester

  • O30—

    Multiple gestation

  • O30.0—

    Twin pregnancy

  • O30.00—

    Twin pregnancy, unspecified number of placenta and unspecified number of amniotic sacs

  • O30.001—

    Twin pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, first trimester

  • O30.002—

    Twin pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, second trimester

  • O30.003—

    Twin pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, third trimester

  • O30.009—

    Twin pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, unspecified trimester

  • O30.01—

    Twin pregnancy, monochorionic/monoamniotic

  • O30.011—

    Twin pregnancy, monochorionic/monoamniotic, first trimester

  • O30.012—

    Twin pregnancy, monochorionic/monoamniotic, second trimester

  • O30.013—

    Twin pregnancy, monochorionic/monoamniotic, third trimester

  • O30.019—

    Twin pregnancy, monochorionic/monoamniotic, unspecified trimester

  • O30.02—

    Conjoined twin pregnancy

  • O30.021—

    Conjoined twin pregnancy, first trimester

  • O30.022—

    Conjoined twin pregnancy, second trimester

  • O30.023—

    Conjoined twin pregnancy, third trimester

  • O30.029—

    Conjoined twin pregnancy, unspecified trimester

  • O30.03—

    Twin pregnancy, monochorionic/diamniotic

  • O30.031—

    Twin pregnancy, monochorionic/diamniotic, first trimester

  • O30.032—

    Twin pregnancy, monochorionic/diamniotic, second trimester

  • O30.033—

    Twin pregnancy, monochorionic/diamniotic, third trimester

  • O30.039—

    Twin pregnancy, monochorionic/diamniotic, unspecified trimester

  • O30.04—

    Twin pregnancy, dichorionic/diamniotic

  • O30.041—

    Twin pregnancy, dichorionic/diamniotic, first trimester

  • O30.042—

    Twin pregnancy, dichorionic/diamniotic, second trimester

  • O30.043—

    Twin pregnancy, dichorionic/diamniotic, third trimester

  • O30.049—

    Twin pregnancy, dichorionic/diamniotic, unspecified trimester

  • O30.09—

    Twin pregnancy, unable to determine number of placenta and number of amniotic sacs

  • O30.091—

    Twin pregnancy, unable to determine number of placenta and number of amniotic sacs, first trimester

  • O30.092—

    Twin pregnancy, unable to determine number of placenta and number of amniotic sacs, second trimester

  • O30.093—

    Twin pregnancy, unable to determine number of placenta and number of amniotic sacs, third trimester

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