| O36.20X0 | Maternal care for hydrops fetalis, unspecified trimester, not applicable or unspecified | BILLABLE CODE |
| O36.20X1 | Maternal care for hydrops fetalis, unspecified trimester, fetus 1 | BILLABLE CODE |
| O36.20X2 | Maternal care for hydrops fetalis, unspecified trimester, fetus 2 | BILLABLE CODE |
| O36.20X3 | Maternal care for hydrops fetalis, unspecified trimester, fetus 3 | BILLABLE CODE |
| O36.20X4 | Maternal care for hydrops fetalis, unspecified trimester, fetus 4 | BILLABLE CODE |
| O36.20X5 | Maternal care for hydrops fetalis, unspecified trimester, fetus 5 | BILLABLE CODE |
| O36.20X9 | Maternal care for hydrops fetalis, unspecified trimester, other fetus | BILLABLE CODE |
