- Codes Description
- O30.831
Other specified multiple gestation, number of chorions and amnions are both equal to the number of fetuses, first trimester
- O30.832
Other specified multiple gestation, number of chorions and amnions are both equal to the number of fetuses, second trimester
- O30.833
Other specified multiple gestation, number of chorions and amnions are both equal to the number of fetuses, third trimester
- O30.839
Other specified multiple gestation, number of chorions and amnions are both equal to the number of fetuses, unspecified trimester