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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  • O26.822—

    Pregnancy related peripheral neuritis, second trimester

  • O26.823—

    Pregnancy related peripheral neuritis, third trimester

  • O26.829—

    Pregnancy related peripheral neuritis, unspecified trimester

  • O26.83—

    Pregnancy related renal disease

  • O26.831—

    Pregnancy related renal disease, first trimester

  • O26.832—

    Pregnancy related renal disease, second trimester

  • O26.833—

    Pregnancy related renal disease, third trimester

  • O26.839—

    Pregnancy related renal disease, unspecified trimester

  • O26.84—

    Uterine size-date discrepancy complicating pregnancy

  • O26.841—

    Uterine size-date discrepancy, first trimester

  • O26.842—

    Uterine size-date discrepancy, second trimester

  • O26.843—

    Uterine size-date discrepancy, third trimester

  • O26.849—

    Uterine size-date discrepancy, unspecified trimester

  • O26.85—

    Spotting complicating pregnancy

  • O26.851—

    Spotting complicating pregnancy, first trimester

  • O26.852—

    Spotting complicating pregnancy, second trimester

  • O26.853—

    Spotting complicating pregnancy, third trimester

  • O26.859—

    Spotting complicating pregnancy, unspecified trimester

  • O26.86—

    Pruritic urticarial papules and plaques of pregnancy (PUPPP)

  • O26.87—

    Cervical shortening

  • O26.872—

    Cervical shortening, second trimester

  • O26.873—

    Cervical shortening, third trimester

  • O26.879—

    Cervical shortening, unspecified trimester

  • O26.89—

    Other specified pregnancy related conditions

  • O26.891—

    Other specified pregnancy related conditions, first trimester

  • O26.892—

    Other specified pregnancy related conditions, second trimester

  • O26.893—

    Other specified pregnancy related conditions, third trimester

  • O26.899—

    Other specified pregnancy related conditions, unspecified trimester

  • O26.9—

    Pregnancy related conditions, unspecified

  • O26.90—

    Pregnancy related conditions, unspecified, unspecified trimester

  • O26.91—

    Pregnancy related conditions, unspecified, first trimester

  • O26.92—

    Pregnancy related conditions, unspecified, second trimester

  • O26.93—

    Pregnancy related conditions, unspecified, third trimester

  • O28—

    Abnormal findings on antenatal screening of mother

  • 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—

    Complications of anesthesia during pregnancy

  • O29.0—

    Pulmonary complications of anesthesia during pregnancy

  • O29.01—

    Aspiration pneumonitis due to anesthesia during pregnancy

  • 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

  • O29.02—

    Pressure collapse of lung due to anesthesia during pregnancy

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