ICD-10-CM › O00-O9A › O30-O48 › O40.2 Polyhydramnios, second trimester › O40.2XX1
Polyhydramnios, second trimester, fetus 1
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2007 Added to the draft code set draft Polyhydramnios, second trimester, fetus 1
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from O40 Polyhydramnios
Seventh character required
- 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.
Excludes1 - never coded here
- encounter for suspected maternal and fetal conditions ruled out (Z03.7-)
Includes
- hydramnios
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Cicatrix
- Sialorrhea
- Anteflexion
- Itch, itching
- Pinpoint > os
- Stricture > vagina
- Anteversion > cervix
- Stricture > os uteri
- Pregnancy > high-risk
- Supervision > pregnancy
- Disease, diseased > renal
- Occlusion, occluded > cervix
- Pregnancy > normal > high-risk
- Stricture > uterus, uterine > os
- Supervision > high-risk pregnancy
- Pregnancy > examination > high-risk
- Occlusion, occluded > cervical canal
- Stenosis, stenotic > endocervical os
- Encounter > pregnancy > supervision of
- Pregnancy > prenatal care only > high-risk
- Contraction, contracture, contracted > cervix
- Pregnancy > complicated by > previous history of
- Contraction, contracture, contracted > internal os
- Prediabetes, prediabetic > complicating > pregnancy
- Necrosis, necrotic > kidney > tubular > complicating > pregnancy
- Hydramnios
- Polyhydramnios
- Pregnancy > complicated by > hydramnios
- Pregnancy > complicated by > polyhydramnios
- Pregnancy > complicated by > hydrops > amnii
Codes in the same group
| Code | Description | Status |
|---|---|---|
| O40.2XX0 | Polyhydramnios, second trimester, not applicable or unspecified | Valid |
| O40.2XX2 | Polyhydramnios, second trimester, fetus 2 | Valid |
| O40.2XX3 | Polyhydramnios, second trimester, fetus 3 | Valid |
| O40.2XX4 | Polyhydramnios, second trimester, fetus 4 | Valid |
| O40.2XX5 | Polyhydramnios, second trimester, fetus 5 | Valid |
| O40.2XX9 | Polyhydramnios, second trimester, other fetus | Valid |