| Full description | Other specified multiple gestation, number of chorions and amnions are both equal to the number of fetuses, first trimester |
| Billable | Yes |
| Chapter | Chapter 15: Pregnancy, childbirth and the puerperium (O00-O9A) |
| Section | Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48) |
| Parent code | O30.83 — Oth mult gest, num of chorions and amnions = num of fetuses |