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
  • O35.BXX9|

    Maternal care for other (suspected) fetal abnormality and damage, fetal cardiac anomalies, other fetus

  • O35.C|

    Maternal care for other (suspected) fetal abnormality and damage, fetal pulmonary anomalies

  • O35.CXX0|

    Maternal care for other (suspected) fetal abnormality and damage, fetal pulmonary anomalies, not applicable or unspecified

  • O35.CXX1|

    Maternal care for other (suspected) fetal abnormality and damage, fetal pulmonary anomalies, fetus 1

  • O35.CXX2|

    Maternal care for other (suspected) fetal abnormality and damage, fetal pulmonary anomalies, fetus 2

  • O35.CXX3|

    Maternal care for other (suspected) fetal abnormality and damage, fetal pulmonary anomalies, fetus 3

  • O35.CXX4|

    Maternal care for other (suspected) fetal abnormality and damage, fetal pulmonary anomalies, fetus 4

  • O35.CXX5|

    Maternal care for other (suspected) fetal abnormality and damage, fetal pulmonary anomalies, fetus 5

  • O35.CXX9|

    Maternal care for other (suspected) fetal abnormality and damage, fetal pulmonary anomalies, other fetus

  • O35.D|

    Maternal care for other (suspected) fetal abnormality and damage, fetal gastrointestinal anomalies

  • O35.DXX0|

    Maternal care for other (suspected) fetal abnormality and damage, fetal gastrointestinal anomalies, not applicable or unspecified

  • O35.DXX1|

    Maternal care for other (suspected) fetal abnormality and damage, fetal gastrointestinal anomalies, fetus 1

  • O35.DXX2|

    Maternal care for other (suspected) fetal abnormality and damage, fetal gastrointestinal anomalies, fetus 2

  • O35.DXX3|

    Maternal care for other (suspected) fetal abnormality and damage, fetal gastrointestinal anomalies, fetus 3

  • O35.DXX4|

    Maternal care for other (suspected) fetal abnormality and damage, fetal gastrointestinal anomalies, fetus 4

  • O35.DXX5|

    Maternal care for other (suspected) fetal abnormality and damage, fetal gastrointestinal anomalies, fetus 5

  • O35.DXX9|

    Maternal care for other (suspected) fetal abnormality and damage, fetal gastrointestinal anomalies, other fetus

  • O35.E|

    Maternal care for other (suspected) fetal abnormality and damage, fetal genitourinary anomalies

  • O35.EXX0|

    Maternal care for other (suspected) fetal abnormality and damage, fetal genitourinary anomalies, not applicable or unspecified

  • O35.EXX1|

    Maternal care for other (suspected) fetal abnormality and damage, fetal genitourinary anomalies, fetus 1

  • O35.EXX2|

    Maternal care for other (suspected) fetal abnormality and damage, fetal genitourinary anomalies, fetus 2

  • O35.EXX3|

    Maternal care for other (suspected) fetal abnormality and damage, fetal genitourinary anomalies, fetus 3

  • O35.EXX4|

    Maternal care for other (suspected) fetal abnormality and damage, fetal genitourinary anomalies, fetus 4

  • O35.EXX5|

    Maternal care for other (suspected) fetal abnormality and damage, fetal genitourinary anomalies, fetus 5

  • O35.EXX9|

    Maternal care for other (suspected) fetal abnormality and damage, fetal genitourinary anomalies, other fetus

  • O35.F|

    Maternal care for other (suspected) fetal abnormality and damage, fetal musculoskeletal anomalies of trunk

  • O35.FXX0|

    Maternal care for other (suspected) fetal abnormality and damage, fetal musculoskeletal anomalies of trunk, not applicable or unspecified

  • O35.FXX1|

    Maternal care for other (suspected) fetal abnormality and damage, fetal musculoskeletal anomalies of trunk, fetus 1

  • O35.FXX2|

    Maternal care for other (suspected) fetal abnormality and damage, fetal musculoskeletal anomalies of trunk, fetus 2

  • O35.FXX3|

    Maternal care for other (suspected) fetal abnormality and damage, fetal musculoskeletal anomalies of trunk, fetus 3

  • O35.FXX4|

    Maternal care for other (suspected) fetal abnormality and damage, fetal musculoskeletal anomalies of trunk, fetus 4

  • O35.FXX5|

    Maternal care for other (suspected) fetal abnormality and damage, fetal musculoskeletal anomalies of trunk, fetus 5

  • O35.FXX9|

    Maternal care for other (suspected) fetal abnormality and damage, fetal musculoskeletal anomalies of trunk, other fetus

  • O35.G|

    Maternal care for other (suspected) fetal abnormality and damage, fetal upper extremities anomalies

  • O35.GXX0|

    Maternal care for other (suspected) fetal abnormality and damage, fetal upper extremities anomalies, not applicable or unspecified

  • O35.GXX1|

    Maternal care for other (suspected) fetal abnormality and damage, fetal upper extremities anomalies, fetus 1

  • O35.GXX2|

    Maternal care for other (suspected) fetal abnormality and damage, fetal upper extremities anomalies, fetus 2

  • O35.GXX3|

    Maternal care for other (suspected) fetal abnormality and damage, fetal upper extremities anomalies, fetus 3

  • O35.GXX4|

    Maternal care for other (suspected) fetal abnormality and damage, fetal upper extremities anomalies, fetus 4

  • O35.GXX5|

    Maternal care for other (suspected) fetal abnormality and damage, fetal upper extremities anomalies, fetus 5

  • O35.GXX9|

    Maternal care for other (suspected) fetal abnormality and damage, fetal upper extremities anomalies, other fetus

  • O35.H|

    Maternal care for other (suspected) fetal abnormality and damage, fetal lower extremities anomalies

  • O35.HXX0|

    Maternal care for other (suspected) fetal abnormality and damage, fetal lower extremities anomalies, not applicable or unspecified

  • O35.HXX1|

    Maternal care for other (suspected) fetal abnormality and damage, fetal lower extremities anomalies, fetus 1

  • O35.HXX2|

    Maternal care for other (suspected) fetal abnormality and damage, fetal lower extremities anomalies, fetus 2

  • O35.HXX3|

    Maternal care for other (suspected) fetal abnormality and damage, fetal lower extremities anomalies, fetus 3

  • O35.HXX4|

    Maternal care for other (suspected) fetal abnormality and damage, fetal lower extremities anomalies, fetus 4

  • O35.HXX5|

    Maternal care for other (suspected) fetal abnormality and damage, fetal lower extremities anomalies, fetus 5

  • O35.HXX9|

    Maternal care for other (suspected) fetal abnormality and damage, fetal lower extremities anomalies, other fetus

  • O36|

    Maternal care for other fetal problems

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