MCMedicalCodingSoftware
O40.9XX5

O40.9XX5: Polyhydramnios, unspecified trimester, fetus 5

Billable / specific codeICD-10-CM

O40.9XX5 is a billable, specific ICD-10-CM code for polyhydramnios, unspecified trimester, fetus 5. It is valid for submission on a claim.

Check O40.9XX5 with the rest of the claim: free scrubber

7th character "5": fetus 5

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.

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

Excludes1 inherited from the categories above O40.9XX5

A category’s note binds every code beneath it.

Written on O40: Polyhydramnios

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

Other codes that can never be billed with O40.9XX5

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • Z03.7Encounter for suspected maternal and fetal conditions ruled out

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under O40.9

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.