Includes: hydramnios Excludes1: encounter for suspected maternal and fetal conditions ruled out (Z03.7-) 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. 0 - not applicable or unspecified 1 - fetus 1 2 - fetus 2 3 - fetus 3 4 - fetus 4 5 - fetus 5 9 - other fetus
