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
PrevNext
  • O16.1|

    Unspecified maternal hypertension, first trimester

  • O16.2|

    Unspecified maternal hypertension, second trimester

  • O16.3|

    Unspecified maternal hypertension, third trimester

  • O16.4|

    Unspecified maternal hypertension, complicating childbirth

  • O16.5|

    Unspecified maternal hypertension, complicating the puerperium

  • O16.9|

    Unspecified maternal hypertension, unspecified trimester

  • O20.0|

    Threatened abortion

  • O20.8|

    Other hemorrhage in early pregnancy

  • O20.9|

    Hemorrhage in early pregnancy, unspecified

  • O21.0|

    Mild hyperemesis gravidarum

  • O21.1|

    Hyperemesis gravidarum with metabolic disturbance

  • O21.2|

    Late vomiting of pregnancy

  • O21.8|

    Other vomiting complicating pregnancy

  • O21.9|

    Vomiting of pregnancy, unspecified

  • O22.00|

    Varicose veins of lower extremity in pregnancy, unspecified trimester

  • O22.01|

    Varicose veins of lower extremity in pregnancy, first trimester

  • O22.02|

    Varicose veins of lower extremity in pregnancy, second trimester

  • O22.03|

    Varicose veins of lower extremity in pregnancy, third trimester

  • O22.10|

    Genital varices in pregnancy, unspecified trimester

  • O22.11|

    Genital varices in pregnancy, first trimester

  • O22.12|

    Genital varices in pregnancy, second trimester

  • O22.13|

    Genital varices in pregnancy, third trimester

  • O22.20|

    Superficial thrombophlebitis in pregnancy, unspecified trimester

  • O22.21|

    Superficial thrombophlebitis in pregnancy, first trimester

  • O22.22|

    Superficial thrombophlebitis in pregnancy, second trimester

  • O22.23|

    Superficial thrombophlebitis in pregnancy, third trimester

  • O22.30|

    Deep phlebothrombosis in pregnancy, unspecified trimester

  • O22.31|

    Deep phlebothrombosis in pregnancy, first trimester

  • O22.32|

    Deep phlebothrombosis in pregnancy, second trimester

  • O22.33|

    Deep phlebothrombosis in pregnancy, third trimester

  • O22.40|

    Hemorrhoids in pregnancy, unspecified trimester

  • O22.41|

    Hemorrhoids in pregnancy, first trimester

  • O22.42|

    Hemorrhoids in pregnancy, second trimester

  • O22.43|

    Hemorrhoids in pregnancy, third trimester

  • O22.50|

    Cerebral venous thrombosis in pregnancy, unspecified trimester

  • O22.51|

    Cerebral venous thrombosis in pregnancy, first trimester

  • O22.52|

    Cerebral venous thrombosis in pregnancy, second trimester

  • O22.53|

    Cerebral venous thrombosis in pregnancy, third trimester

  • O22.8X1|

    Other venous complications in pregnancy, first trimester

  • O22.8X2|

    Other venous complications in pregnancy, second trimester

  • O22.8X3|

    Other venous complications in pregnancy, third trimester

  • O22.8X9|

    Other venous complications in pregnancy, unspecified trimester

  • O22.90|

    Venous complication in pregnancy, unspecified, unspecified trimester

  • O22.91|

    Venous complication in pregnancy, unspecified, first trimester

  • O22.92|

    Venous complication in pregnancy, unspecified, second trimester

  • O22.93|

    Venous complication in pregnancy, unspecified, third trimester

  • O23.00|

    Infections of kidney in pregnancy, unspecified trimester

  • O23.01|

    Infections of kidney in pregnancy, first trimester

  • O23.02|

    Infections of kidney in pregnancy, second trimester

  • O23.03|

    Infections of kidney in pregnancy, third trimester

PreviousPage 6 of 53Next