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
  • O14.20—

    HELLP syndrome (HELLP), unspecified trimester

  • O14.22—

    HELLP syndrome (HELLP), second trimester

  • O14.23—

    HELLP syndrome (HELLP), third trimester

  • O14.24—

    HELLP syndrome, complicating childbirth

  • O14.25—

    HELLP syndrome, complicating the puerperium

  • O14.9—

    Unspecified pre-eclampsia

  • O14.90—

    Unspecified pre-eclampsia, unspecified trimester

  • O14.92—

    Unspecified pre-eclampsia, second trimester

  • O14.93—

    Unspecified pre-eclampsia, third trimester

  • O14.94—

    Unspecified pre-eclampsia, complicating childbirth

  • O14.95—

    Unspecified pre-eclampsia, complicating the puerperium

  • O15—

    Eclampsia

  • O15.0—

    Eclampsia complicating pregnancy

  • O15.00—

    Eclampsia complicating pregnancy, unspecified trimester

  • O15.02—

    Eclampsia complicating pregnancy, second trimester

  • O15.03—

    Eclampsia complicating pregnancy, third trimester

  • O15.1—

    Eclampsia complicating labor

  • O15.2—

    Eclampsia complicating the puerperium

  • O15.9—

    Eclampsia, unspecified as to time period

  • O16—

    Unspecified maternal hypertension

  • 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—

    Hemorrhage in early pregnancy

  • O20.0—

    Threatened abortion

  • O20.8—

    Other hemorrhage in early pregnancy

  • O20.9—

    Hemorrhage in early pregnancy, unspecified

  • O21—

    Excessive vomiting in pregnancy

  • 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—

    Venous complications and hemorrhoids in pregnancy

  • O22.0—

    Varicose veins of lower extremity in pregnancy

  • 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

  • O22.1—

    Genital varices in pregnancy

  • 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

  • O22.2—

    Superficial thrombophlebitis in pregnancy

  • O22.20—

    Superficial thrombophlebitis in pregnancy, unspecified trimester

  • O22.21—

    Superficial thrombophlebitis in pregnancy, first trimester

PreviousPage 7 of 61Next