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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  • O26.92—

    Pregnancy related conditions, unspecified, second trimester

  • O26.93—

    Pregnancy related conditions, unspecified, third trimester

  • O28.0—

    Abnormal hematological finding on antenatal screening of mother

  • O28.1—

    Abnormal biochemical finding on antenatal screening of mother

  • O28.2—

    Abnormal cytological finding on antenatal screening of mother

  • O28.3—

    Abnormal ultrasonic finding on antenatal screening of mother

  • O28.4—

    Abnormal radiological finding on antenatal screening of mother

  • O28.5—

    Abnormal chromosomal and genetic finding on antenatal screening of mother

  • O28.8—

    Other abnormal findings on antenatal screening of mother

  • O28.9—

    Unspecified abnormal findings on antenatal screening of mother

  • O29.011—

    Aspiration pneumonitis due to anesthesia during pregnancy, first trimester

  • O29.012—

    Aspiration pneumonitis due to anesthesia during pregnancy, second trimester

  • O29.013—

    Aspiration pneumonitis due to anesthesia during pregnancy, third trimester

  • O29.019—

    Aspiration pneumonitis due to anesthesia during pregnancy, unspecified trimester

  • O29.021—

    Pressure collapse of lung due to anesthesia during pregnancy, first trimester

  • O29.022—

    Pressure collapse of lung due to anesthesia during pregnancy, second trimester

  • O29.023—

    Pressure collapse of lung due to anesthesia during pregnancy, third trimester

  • O29.029—

    Pressure collapse of lung due to anesthesia during pregnancy, unspecified trimester

  • O29.091—

    Other pulmonary complications of anesthesia during pregnancy, first trimester

  • O29.092—

    Other pulmonary complications of anesthesia during pregnancy, second trimester

  • O29.093—

    Other pulmonary complications of anesthesia during pregnancy, third trimester

  • O29.099—

    Other pulmonary complications of anesthesia during pregnancy, unspecified trimester

  • O29.111—

    Cardiac arrest due to anesthesia during pregnancy, first trimester

  • O29.112—

    Cardiac arrest due to anesthesia during pregnancy, second trimester

  • O29.113—

    Cardiac arrest due to anesthesia during pregnancy, third trimester

  • O29.119—

    Cardiac arrest due to anesthesia during pregnancy, unspecified trimester

  • O29.121—

    Cardiac failure due to anesthesia during pregnancy, first trimester

  • O29.122—

    Cardiac failure due to anesthesia during pregnancy, second trimester

  • O29.123—

    Cardiac failure due to anesthesia during pregnancy, third trimester

  • O29.129—

    Cardiac failure due to anesthesia during pregnancy, unspecified trimester

  • O29.191—

    Other cardiac complications of anesthesia during pregnancy, first trimester

  • O29.192—

    Other cardiac complications of anesthesia during pregnancy, second trimester

  • O29.193—

    Other cardiac complications of anesthesia during pregnancy, third trimester

  • O29.199—

    Other cardiac complications of anesthesia during pregnancy, unspecified trimester

  • O29.211—

    Cerebral anoxia due to anesthesia during pregnancy, first trimester

  • O29.212—

    Cerebral anoxia due to anesthesia during pregnancy, second trimester

  • O29.213—

    Cerebral anoxia due to anesthesia during pregnancy, third trimester

  • O29.219—

    Cerebral anoxia due to anesthesia during pregnancy, unspecified trimester

  • O29.291—

    Other central nervous system complications of anesthesia during pregnancy, first trimester

  • O29.292—

    Other central nervous system complications of anesthesia during pregnancy, second trimester

  • O29.293—

    Other central nervous system complications of anesthesia during pregnancy, third trimester

  • O29.299—

    Other central nervous system complications of anesthesia during pregnancy, unspecified trimester

  • O29.3X1—

    Toxic reaction to local anesthesia during pregnancy, first trimester

  • O29.3X2—

    Toxic reaction to local anesthesia during pregnancy, second trimester

  • O29.3X3—

    Toxic reaction to local anesthesia during pregnancy, third trimester

  • O29.3X9—

    Toxic reaction to local anesthesia during pregnancy, unspecified trimester

  • O29.40—

    Spinal and epidural anesthesia induced headache during pregnancy, unspecified trimester

  • O29.41—

    Spinal and epidural anesthesia induced headache during pregnancy, first trimester

  • O29.42—

    Spinal and epidural anesthesia induced headache during pregnancy, second trimester

  • O29.43—

    Spinal and epidural anesthesia induced headache during pregnancy, third trimester

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