ICD-10-CM > O00-O9A > O30-O48 > O40 O40 Polyhydramnios Non-Billable/Non-Specific Includes hydramnios Type 1 Excludes encounter for suspected maternal and fetal conditions ruled out (Z03.7-) Codes O40.1Polyhydramnios, first trimesterO40.1XX0..., not applicable or unspecifiedO40.1XX1..., fetus 1O40.1XX2..., fetus 2O40.1XX3..., fetus 3O40.1XX4..., fetus 4O40.1XX5..., fetus 5O40.1XX9..., other fetusO40.2Polyhydramnios, second trimesterO40.2XX0..., not applicable or unspecifiedO40.2XX1..., fetus 1O40.2XX2..., fetus 2O40.2XX3..., fetus 3O40.2XX4..., fetus 4O40.2XX5..., fetus 5O40.2XX9..., other fetusO40.3Polyhydramnios, third trimesterO40.3XX0..., not applicable or unspecifiedO40.3XX1..., fetus 1O40.3XX2..., fetus 2O40.3XX3..., fetus 3O40.3XX4..., fetus 4O40.3XX5..., fetus 5O40.3XX9..., other fetusO40.9Polyhydramnios, unspecified trimesterO40.9XX0..., not applicable or unspecifiedO40.9XX1..., fetus 1O40.9XX2..., fetus 2O40.9XX3..., fetus 3O40.9XX4..., fetus 4O40.9XX5..., fetus 5O40.9XX9..., other fetus
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