O40.9 Polyhydramnios, unspecified trimester

Non-billable ICD-10-CM code.

Applies from O40 Polyhydramnios

Includes

• hydramnios

Excludes1 (never code together)

• encounter for suspected maternal and fetal conditions ruled out (Z03.7-)

7th character note

• One of the following 7th characters is to be assigned to each code under category O40. 7th character 0 is for single gestations and multiple gestations where the fetus is unspecified. 7th characters 1 through 9 are for cases of multiple gestations to identify the fetus for which the code applies. The appropriate code from category O30, Multiple gestation, must also be assigned when assigning a code from category O40 that has a 7th character of 1 through 9.

7th character required

• 0 — not applicable or unspecified
• 1 — fetus 1
• 2 — fetus 2
• 3 — fetus 3
• 4 — fetus 4
• 5 — fetus 5
• 9 — other fetus

Code annotations containing back-references to O40.9

Back-references to O40

• Type 1 Excludes: Z03.7 Encounter for suspected maternal and fetal conditions ruled out ("known or suspected fetal anomalies affecting management of mother, not ruled out (O26.-, O35.-, O36.-, O40.-, O41.-)")

Nearby codes

• 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 (this code)
• 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