Emergency: 119
AMDA-IMIC

O40 Polyhydramnios

Category / Non-billable header 4 subcodes

Block: Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)

Includes

  • hydramnios

Excludes 1 (cannot be coded together)

  • encounter for suspected maternal and fetal conditions ruled out (Z03.7-)

Subcodes

Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.

Code Description Billable
O40..1 Polyhydramnios, first trimester No
O40..2 Polyhydramnios, second trimester No
O40..3 Polyhydramnios, third trimester No
O40..9 Polyhydramnios, unspecified trimester No

Last reviewed: September 2026