| O36.20 | Maternal care for hydrops fetalis, unspecified trimester | NON-BILLABLE CODE |
| 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 |
| O36.21 | Maternal care for hydrops fetalis, first trimester | NON-BILLABLE CODE |
| O36.21X0 | Maternal care for hydrops fetalis, first trimester, not applicable or unspecified | BILLABLE CODE |
| O36.21X1 | Maternal care for hydrops fetalis, first trimester, fetus 1 | BILLABLE CODE |
| O36.21X2 | Maternal care for hydrops fetalis, first trimester, fetus 2 | BILLABLE CODE |
| O36.21X3 | Maternal care for hydrops fetalis, first trimester, fetus 3 | BILLABLE CODE |
| O36.21X4 | Maternal care for hydrops fetalis, first trimester, fetus 4 | BILLABLE CODE |
| O36.21X5 | Maternal care for hydrops fetalis, first trimester, fetus 5 | BILLABLE CODE |
| O36.21X9 | Maternal care for hydrops fetalis, first trimester, other fetus | BILLABLE CODE |
| O36.22 | Maternal care for hydrops fetalis, second trimester | NON-BILLABLE CODE |
| O36.22X0 | Maternal care for hydrops fetalis, second trimester, not applicable or unspecified | BILLABLE CODE |
| O36.22X1 | Maternal care for hydrops fetalis, second trimester, fetus 1 | BILLABLE CODE |
| O36.22X2 | Maternal care for hydrops fetalis, second trimester, fetus 2 | BILLABLE CODE |
| O36.22X3 | Maternal care for hydrops fetalis, second trimester, fetus 3 | BILLABLE CODE |
| O36.22X4 | Maternal care for hydrops fetalis, second trimester, fetus 4 | BILLABLE CODE |
| O36.22X5 | Maternal care for hydrops fetalis, second trimester, fetus 5 | BILLABLE CODE |
| O36.22X9 | Maternal care for hydrops fetalis, second trimester, other fetus | BILLABLE CODE |
| O36.23 | Maternal care for hydrops fetalis, third trimester | NON-BILLABLE CODE |
| O36.23X0 | Maternal care for hydrops fetalis, third trimester, not applicable or unspecified | BILLABLE CODE |
| O36.23X1 | Maternal care for hydrops fetalis, third trimester, fetus 1 | BILLABLE CODE |
| O36.23X2 | Maternal care for hydrops fetalis, third trimester, fetus 2 | BILLABLE CODE |
| O36.23X3 | Maternal care for hydrops fetalis, third trimester, fetus 3 | BILLABLE CODE |
| O36.23X4 | Maternal care for hydrops fetalis, third trimester, fetus 4 | BILLABLE CODE |
| O36.23X5 | Maternal care for hydrops fetalis, third trimester, fetus 5 | BILLABLE CODE |
| O36.23X9 | Maternal care for hydrops fetalis, third trimester, other fetus | BILLABLE CODE |
