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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  • O31.01X5|

    Papyraceous fetus, first trimester, fetus 5

  • O31.01X9|

    Papyraceous fetus, first trimester, other fetus

  • O31.02|

    Papyraceous fetus, second trimester

  • O31.02X0|

    Papyraceous fetus, second trimester, not applicable or unspecified

  • O31.02X1|

    Papyraceous fetus, second trimester, fetus 1

  • O31.02X2|

    Papyraceous fetus, second trimester, fetus 2

  • O31.02X3|

    Papyraceous fetus, second trimester, fetus 3

  • O31.02X4|

    Papyraceous fetus, second trimester, fetus 4

  • O31.02X5|

    Papyraceous fetus, second trimester, fetus 5

  • O31.02X9|

    Papyraceous fetus, second trimester, other fetus

  • O31.03|

    Papyraceous fetus, third trimester

  • O31.03X0|

    Papyraceous fetus, third trimester, not applicable or unspecified

  • O31.03X1|

    Papyraceous fetus, third trimester, fetus 1

  • O31.03X2|

    Papyraceous fetus, third trimester, fetus 2

  • O31.03X3|

    Papyraceous fetus, third trimester, fetus 3

  • O31.03X4|

    Papyraceous fetus, third trimester, fetus 4

  • O31.03X5|

    Papyraceous fetus, third trimester, fetus 5

  • O31.03X9|

    Papyraceous fetus, third trimester, other fetus

  • O31.1|

    Continuing pregnancy after spontaneous abortion of one fetus or more

  • O31.10|

    Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester

  • O31.10X0|

    Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, not applicable or unspecified

  • O31.10X1|

    Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, fetus 1

  • O31.10X2|

    Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, fetus 2

  • O31.10X3|

    Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, fetus 3

  • O31.10X4|

    Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, fetus 4

  • O31.10X5|

    Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, fetus 5

  • O31.10X9|

    Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, other fetus

  • O31.11|

    Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester

  • O31.11X0|

    Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, not applicable or unspecified

  • O31.11X1|

    Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, fetus 1

  • O31.11X2|

    Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, fetus 2

  • O31.11X3|

    Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, fetus 3

  • O31.11X4|

    Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, fetus 4

  • O31.11X5|

    Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, fetus 5

  • O31.11X9|

    Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester, other fetus

  • O31.12|

    Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester

  • O31.12X0|

    Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, not applicable or unspecified

  • O31.12X1|

    Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, fetus 1

  • O31.12X2|

    Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, fetus 2

  • O31.12X3|

    Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, fetus 3

  • O31.12X4|

    Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, fetus 4

  • O31.12X5|

    Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, fetus 5

  • O31.12X9|

    Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, other fetus

  • O31.13|

    Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester

  • O31.13X0|

    Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, not applicable or unspecified

  • O31.13X1|

    Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, fetus 1

  • O31.13X2|

    Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, fetus 2

  • O31.13X3|

    Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, fetus 3

  • O31.13X4|

    Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, fetus 4

  • O31.13X5|

    Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester, fetus 5

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