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 Codes Billable Only

Internal Codes

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O41.8X19|
Other specified disorders of amniotic fluid and membranes, first trimester, other fetus
O41.8X2|
Other specified disorders of amniotic fluid and membranes, second trimester
O41.8X20|
Other specified disorders of amniotic fluid and membranes, second trimester, not applicable or unspecified
O41.8X21|
Other specified disorders of amniotic fluid and membranes, second trimester, fetus 1
O41.8X22|
Other specified disorders of amniotic fluid and membranes, second trimester, fetus 2
O41.8X23|
Other specified disorders of amniotic fluid and membranes, second trimester, fetus 3
O41.8X24|
Other specified disorders of amniotic fluid and membranes, second trimester, fetus 4
O41.8X25|
Other specified disorders of amniotic fluid and membranes, second trimester, fetus 5
O41.8X29|
Other specified disorders of amniotic fluid and membranes, second trimester, other fetus
O41.8X3|
Other specified disorders of amniotic fluid and membranes, third trimester
O41.8X30|
Other specified disorders of amniotic fluid and membranes, third trimester, not applicable or unspecified
O41.8X31|
Other specified disorders of amniotic fluid and membranes, third trimester, fetus 1
O41.8X32|
Other specified disorders of amniotic fluid and membranes, third trimester, fetus 2
O41.8X33|
Other specified disorders of amniotic fluid and membranes, third trimester, fetus 3
O41.8X34|
Other specified disorders of amniotic fluid and membranes, third trimester, fetus 4
O41.8X35|
Other specified disorders of amniotic fluid and membranes, third trimester, fetus 5
O41.8X39|
Other specified disorders of amniotic fluid and membranes, third trimester, other fetus
O41.8X9|
Other specified disorders of amniotic fluid and membranes, unspecified trimester
O41.8X90|
Other specified disorders of amniotic fluid and membranes, unspecified trimester, not applicable or unspecified
O41.8X91|
Other specified disorders of amniotic fluid and membranes, unspecified trimester, fetus 1
O41.8X92|
Other specified disorders of amniotic fluid and membranes, unspecified trimester, fetus 2
O41.8X93|
Other specified disorders of amniotic fluid and membranes, unspecified trimester, fetus 3
O41.8X94|
Other specified disorders of amniotic fluid and membranes, unspecified trimester, fetus 4
O41.8X95|
Other specified disorders of amniotic fluid and membranes, unspecified trimester, fetus 5
O41.8X99|
Other specified disorders of amniotic fluid and membranes, unspecified trimester, other fetus
O41.9|
Disorder of amniotic fluid and membranes, unspecified
O41.90|
Disorder of amniotic fluid and membranes, unspecified, unspecified trimester
O41.90X0|
Disorder of amniotic fluid and membranes, unspecified, unspecified trimester, not applicable or unspecified
O41.90X1|
Disorder of amniotic fluid and membranes, unspecified, unspecified trimester, fetus 1
O41.90X2|
Disorder of amniotic fluid and membranes, unspecified, unspecified trimester, fetus 2
O41.90X3|
Disorder of amniotic fluid and membranes, unspecified, unspecified trimester, fetus 3
O41.90X4|
Disorder of amniotic fluid and membranes, unspecified, unspecified trimester, fetus 4
O41.90X5|
Disorder of amniotic fluid and membranes, unspecified, unspecified trimester, fetus 5
O41.90X9|
Disorder of amniotic fluid and membranes, unspecified, unspecified trimester, other fetus
O41.91|
Disorder of amniotic fluid and membranes, unspecified, first trimester
O41.91X0|
Disorder of amniotic fluid and membranes, unspecified, first trimester, not applicable or unspecified
O41.91X1|
Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 1
O41.91X2|
Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 2
O41.91X3|
Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 3
O41.91X4|
Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 4
O41.91X5|
Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 5
O41.91X9|
Disorder of amniotic fluid and membranes, unspecified, first trimester, other fetus
O41.92|
Disorder of amniotic fluid and membranes, unspecified, second trimester
O41.92X0|
Disorder of amniotic fluid and membranes, unspecified, second trimester, not applicable or unspecified
O41.92X1|
Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 1
O41.92X2|
Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 2
O41.92X3|
Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 3
O41.92X4|
Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 4
O41.92X5|
Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 5
O41.92X9|
Disorder of amniotic fluid and membranes, unspecified, second trimester, other fetus

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