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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  • O23.40—

    Unspecified infection of urinary tract in pregnancy, unspecified trimester

  • O23.41—

    Unspecified infection of urinary tract in pregnancy, first trimester

  • O23.42—

    Unspecified infection of urinary tract in pregnancy, second trimester

  • O23.43—

    Unspecified infection of urinary tract in pregnancy, third trimester

  • O23.5—

    Infections of the genital tract in pregnancy

  • O23.51—

    Infection of cervix in pregnancy

  • O23.511—

    Infections of cervix in pregnancy, first trimester

  • O23.512—

    Infections of cervix in pregnancy, second trimester

  • O23.513—

    Infections of cervix in pregnancy, third trimester

  • O23.519—

    Infections of cervix in pregnancy, unspecified trimester

  • O23.52—

    Salpingo-oophoritis in pregnancy

  • O23.521—

    Salpingo-oophoritis in pregnancy, first trimester

  • O23.522—

    Salpingo-oophoritis in pregnancy, second trimester

  • O23.523—

    Salpingo-oophoritis in pregnancy, third trimester

  • O23.529—

    Salpingo-oophoritis in pregnancy, unspecified trimester

  • O23.59—

    Infection of other part of genital tract in pregnancy

  • O23.591—

    Infection of other part of genital tract in pregnancy, first trimester

  • O23.592—

    Infection of other part of genital tract in pregnancy, second trimester

  • O23.593—

    Infection of other part of genital tract in pregnancy, third trimester

  • O23.599—

    Infection of other part of genital tract in pregnancy, unspecified trimester

  • O23.9—

    Unspecified genitourinary tract infection in pregnancy

  • O23.90—

    Unspecified genitourinary tract infection in pregnancy, unspecified trimester

  • O23.91—

    Unspecified genitourinary tract infection in pregnancy, first trimester

  • O23.92—

    Unspecified genitourinary tract infection in pregnancy, second trimester

  • O23.93—

    Unspecified genitourinary tract infection in pregnancy, third trimester

  • O24—

    Diabetes mellitus in pregnancy, childbirth, and the puerperium

  • O24.0—

    Pre-existing type 1 diabetes mellitus, in pregnancy, childbirth and the puerperium

  • O24.01—

    Pre-existing type 1 diabetes mellitus, in pregnancy

  • O24.011—

    Pre-existing type 1 diabetes mellitus, in pregnancy, first trimester

  • O24.012—

    Pre-existing type 1 diabetes mellitus, in pregnancy, second trimester

  • O24.013—

    Pre-existing type 1 diabetes mellitus, in pregnancy, third trimester

  • O24.019—

    Pre-existing type 1 diabetes mellitus, in pregnancy, unspecified trimester

  • O24.02—

    Pre-existing type 1 diabetes mellitus, in childbirth

  • O24.03—

    Pre-existing type 1 diabetes mellitus, in the puerperium

  • O24.1—

    Pre-existing type 2 diabetes mellitus, in pregnancy, childbirth and the puerperium

  • O24.11—

    Pre-existing type 2 diabetes mellitus, in pregnancy

  • O24.111—

    Pre-existing type 2 diabetes mellitus, in pregnancy, first trimester

  • O24.112—

    Pre-existing type 2 diabetes mellitus, in pregnancy, second trimester

  • O24.113—

    Pre-existing type 2 diabetes mellitus, in pregnancy, third trimester

  • O24.119—

    Pre-existing type 2 diabetes mellitus, in pregnancy, unspecified trimester

  • O24.12—

    Pre-existing type 2 diabetes mellitus, in childbirth

  • O24.13—

    Pre-existing type 2 diabetes mellitus, in the puerperium

  • O24.3—

    Unspecified pre-existing diabetes mellitus in pregnancy, childbirth and the puerperium

  • O24.31—

    Unspecified pre-existing diabetes mellitus in pregnancy

  • O24.311—

    Unspecified pre-existing diabetes mellitus in pregnancy, first trimester

  • O24.312—

    Unspecified pre-existing diabetes mellitus in pregnancy, second trimester

  • O24.313—

    Unspecified pre-existing diabetes mellitus in pregnancy, third trimester

  • O24.319—

    Unspecified pre-existing diabetes mellitus in pregnancy, unspecified trimester

  • O24.32—

    Unspecified pre-existing diabetes mellitus in childbirth

  • O24.33—

    Unspecified pre-existing diabetes mellitus in the puerperium

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