ICD-10-CM Book 2024 Edition

Chapters  /  Chapter 15  /  O30-O48  /  O40
O40 Polyhydramnios
Includes hydramnios
Excludes1 encounter for suspected maternal and fetal conditions ruled out (Z03.7-)
char7Note One of the following 7th characters is to be assigned to each code under category O40. 7th character 0 is for single gestations and multiple gestations where the fetus is unspecified. 7th characters 1 through 9 are for cases of multiple gestations to identify the fetus for which the code applies. The appropriate code from category O30, Multiple gestation, must also be assigned when assigning a code from category O40 that has a 7th character of 1 through 9.
char7Def 0: not applicable or unspecified
1: fetus 1
2: fetus 2
3: fetus 3
4: fetus 4
5: fetus 5
9: other fetus
O40.1 Polyhydramnios, first trimester
O40.2 Polyhydramnios, second trimester
O40.3 Polyhydramnios, third trimester
O40.9 Polyhydramnios, unspecified trimester