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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  • O98.33—

    Other infections with a predominantly sexual mode of transmission complicating the puerperium

  • O98.411—

    Viral hepatitis complicating pregnancy, first trimester

  • O98.412—

    Viral hepatitis complicating pregnancy, second trimester

  • O98.413—

    Viral hepatitis complicating pregnancy, third trimester

  • O98.419—

    Viral hepatitis complicating pregnancy, unspecified trimester

  • O98.42—

    Viral hepatitis complicating childbirth

  • O98.43—

    Viral hepatitis complicating the puerperium

  • O98.511—

    Other viral diseases complicating pregnancy, first trimester

  • O98.512—

    Other viral diseases complicating pregnancy, second trimester

  • O98.513—

    Other viral diseases complicating pregnancy, third trimester

  • O98.519—

    Other viral diseases complicating pregnancy, unspecified trimester

  • O98.52—

    Other viral diseases complicating childbirth

  • O98.53—

    Other viral diseases complicating the puerperium

  • O98.611—

    Protozoal diseases complicating pregnancy, first trimester

  • O98.612—

    Protozoal diseases complicating pregnancy, second trimester

  • O98.613—

    Protozoal diseases complicating pregnancy, third trimester

  • O98.619—

    Protozoal diseases complicating pregnancy, unspecified trimester

  • O98.62—

    Protozoal diseases complicating childbirth

  • O98.63—

    Protozoal diseases complicating the puerperium

  • O98.711—

    Human immunodeficiency virus [HIV] disease complicating pregnancy, first trimester

  • O98.712—

    Human immunodeficiency virus [HIV] disease complicating pregnancy, second trimester

  • O98.713—

    Human immunodeficiency virus [HIV] disease complicating pregnancy, third trimester

  • O98.719—

    Human immunodeficiency virus [HIV] disease complicating pregnancy, unspecified trimester

  • O98.72—

    Human immunodeficiency virus [HIV] disease complicating childbirth

  • O98.73—

    Human immunodeficiency virus [HIV] disease complicating the puerperium

  • O98.811—

    Other maternal infectious and parasitic diseases complicating pregnancy, first trimester

  • O98.812—

    Other maternal infectious and parasitic diseases complicating pregnancy, second trimester

  • O98.813—

    Other maternal infectious and parasitic diseases complicating pregnancy, third trimester

  • O98.819—

    Other maternal infectious and parasitic diseases complicating pregnancy, unspecified trimester

  • O98.82—

    Other maternal infectious and parasitic diseases complicating childbirth

  • O98.83—

    Other maternal infectious and parasitic diseases complicating the puerperium

  • O98.911—

    Unspecified maternal infectious and parasitic disease complicating pregnancy, first trimester

  • O98.912—

    Unspecified maternal infectious and parasitic disease complicating pregnancy, second trimester

  • O98.913—

    Unspecified maternal infectious and parasitic disease complicating pregnancy, third trimester

  • O98.919—

    Unspecified maternal infectious and parasitic disease complicating pregnancy, unspecified trimester

  • O98.92—

    Unspecified maternal infectious and parasitic disease complicating childbirth

  • O98.93—

    Unspecified maternal infectious and parasitic disease complicating the puerperium

  • O99.011—

    Anemia complicating pregnancy, first trimester

  • O99.012—

    Anemia complicating pregnancy, second trimester

  • O99.013—

    Anemia complicating pregnancy, third trimester

  • O99.019—

    Anemia complicating pregnancy, unspecified trimester

  • O99.02—

    Anemia complicating childbirth

  • O99.03—

    Anemia complicating the puerperium

  • O99.111—

    Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, first trimester

  • O99.112—

    Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, second trimester

  • O99.113—

    Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, third trimester

  • O99.119—

    Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, unspecified trimester

  • O99.12—

    Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating childbirth

  • O99.13—

    Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating the puerperium

  • O99.210—

    Obesity complicating pregnancy, unspecified trimester

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