| ICD-10 Code | Description |
| O40.1XX0 | Polyhydramnios, first trimester, not applicable or unspecified |
| O40.1XX1 | Polyhydramnios, first trimester, fetus 1 |
| O40.1XX2 | Polyhydramnios, first trimester, fetus 2 |
| O40.1XX3 | Polyhydramnios, first trimester, fetus 3 |
| O40.1XX4 | Polyhydramnios, first trimester, fetus 4 |
| O40.1XX5 | Polyhydramnios, first trimester, fetus 5 |
| O40.1XX9 | Polyhydramnios, first trimester, other fetus |
| O40.2XX0 | Polyhydramnios, second trimester, not applicable or unspecified |
| O40.2XX1 | Polyhydramnios, second trimester, fetus 1 |
| O40.2XX2 | Polyhydramnios, second trimester, fetus 2 |
| O40.2XX3 | Polyhydramnios, second trimester, fetus 3 |
| O40.2XX4 | Polyhydramnios, second trimester, fetus 4 |
| O40.2XX5 | Polyhydramnios, second trimester, fetus 5 |
| O40.2XX9 | Polyhydramnios, second trimester, other fetus |
| O40.3XX0 | Polyhydramnios, third trimester, not applicable or unspecified |
| O40.3XX1 | Polyhydramnios, third trimester, fetus 1 |
| O40.3XX2 | Polyhydramnios, third trimester, fetus 2 |
| O40.3XX3 | Polyhydramnios, third trimester, fetus 3 |
| O40.3XX4 | Polyhydramnios, third trimester, fetus 4 |
| O40.3XX5 | Polyhydramnios, third trimester, fetus 5 |
| O40.3XX9 | Polyhydramnios, third trimester, other fetus |
| O40.9XX0 | Polyhydramnios, unspecified trimester, not applicable or unspecified |
| O40.9XX1 | Polyhydramnios, unspecified trimester, fetus 1 |
| O40.9XX2 | Polyhydramnios, unspecified trimester, fetus 2 |
| O40.9XX3 | Polyhydramnios, unspecified trimester, fetus 3 |
| O40.9XX4 | Polyhydramnios, unspecified trimester, fetus 4 |
| O40.9XX5 | Polyhydramnios, unspecified trimester, fetus 5 |
| O40.9XX9 | Polyhydramnios, unspecified trimester, other fetus |
