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.
Internal Codes
  • O99.7|

    Diseases of the skin and subcutaneous tissue complicating pregnancy, childbirth and the puerperium

  • O99.71|

    Diseases of the skin and subcutaneous tissue complicating pregnancy

  • O99.711|

    Diseases of the skin and subcutaneous tissue complicating pregnancy, first trimester

  • O99.712|

    Diseases of the skin and subcutaneous tissue complicating pregnancy, second trimester

  • O99.713|

    Diseases of the skin and subcutaneous tissue complicating pregnancy, third trimester

  • O99.719|

    Diseases of the skin and subcutaneous tissue complicating pregnancy, unspecified trimester

  • O99.72|

    Diseases of the skin and subcutaneous tissue complicating childbirth

  • O99.73|

    Diseases of the skin and subcutaneous tissue complicating the puerperium

  • O99.8|

    Other specified diseases and conditions complicating pregnancy, childbirth and the puerperium

  • O99.81|

    Abnormal glucose complicating pregnancy, childbirth and the puerperium

  • O99.810|

    Abnormal glucose complicating pregnancy

  • O99.814|

    Abnormal glucose complicating childbirth

  • O99.815|

    Abnormal glucose complicating the puerperium

  • O99.82|

    Streptococcus B carrier state complicating pregnancy, childbirth and the puerperium

  • O99.820|

    Streptococcus B carrier state complicating pregnancy

  • O99.824|

    Streptococcus B carrier state complicating childbirth

  • O99.825|

    Streptococcus B carrier state complicating the puerperium

  • O99.83|

    Other infection carrier state complicating pregnancy, childbirth and the puerperium

  • O99.830|

    Other infection carrier state complicating pregnancy

  • O99.834|

    Other infection carrier state complicating childbirth

  • O99.835|

    Other infection carrier state complicating the puerperium

  • O99.84|

    Bariatric surgery status complicating pregnancy, childbirth and the puerperium

  • O99.840|

    Bariatric surgery status complicating pregnancy, unspecified trimester

  • O99.841|

    Bariatric surgery status complicating pregnancy, first trimester

  • O99.842|

    Bariatric surgery status complicating pregnancy, second trimester

  • O99.843|

    Bariatric surgery status complicating pregnancy, third trimester

  • O99.844|

    Bariatric surgery status complicating childbirth

  • O99.845|

    Bariatric surgery status complicating the puerperium

  • O99.89|

    Other specified diseases and conditions complicating pregnancy, childbirth and the puerperium

  • O99.891|

    Other specified diseases and conditions complicating pregnancy

  • O99.892|

    Other specified diseases and conditions complicating childbirth

  • O99.893|

    Other specified diseases and conditions complicating puerperium

  • O9A|

    Maternal malignant neoplasms, traumatic injuries and abuse classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

  • O9A.1|

    Malignant neoplasm complicating pregnancy, childbirth and the puerperium

  • O9A.11|

    Malignant neoplasm complicating pregnancy

  • O9A.111|

    Malignant neoplasm complicating pregnancy, first trimester

  • O9A.112|

    Malignant neoplasm complicating pregnancy, second trimester

  • O9A.113|

    Malignant neoplasm complicating pregnancy, third trimester

  • O9A.119|

    Malignant neoplasm complicating pregnancy, unspecified trimester

  • O9A.12|

    Malignant neoplasm complicating childbirth

  • O9A.13|

    Malignant neoplasm complicating the puerperium

  • O9A.2|

    Injury, poisoning and certain other consequences of external causes complicating pregnancy, childbirth and the puerperium

  • O9A.21|

    Injury, poisoning and certain other consequences of external causes complicating pregnancy

  • O9A.211|

    Injury, poisoning and certain other consequences of external causes complicating pregnancy, first trimester

  • O9A.212|

    Injury, poisoning and certain other consequences of external causes complicating pregnancy, second trimester

  • O9A.213|

    Injury, poisoning and certain other consequences of external causes complicating pregnancy, third trimester

  • O9A.219|

    Injury, poisoning and certain other consequences of external causes complicating pregnancy, unspecified trimester

  • O9A.22|

    Injury, poisoning and certain other consequences of external causes complicating childbirth

  • O9A.23|

    Injury, poisoning and certain other consequences of external causes complicating the puerperium

  • O9A.3|

    Physical abuse complicating pregnancy, childbirth and the puerperium

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