ICD-10-CM category
O40: Polyhydramnios
Codes under O40 (Polyhydramnios). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| O40.1 | Polyhydramnios, first trimester | — |
| 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 | ✓ |
| O40.2 | Polyhydramnios, second trimester | — |
| 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 | ✓ |
| O40.3 | Polyhydramnios, third trimester | — |
| 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 | ✓ |
| O40.9 | Polyhydramnios, unspecified trimester | — |
| 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 | ✓ |
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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