Twin pregnancy, monochorionic/monoamniotic, third trimester

ValidICD-10-CM diagnosis code.

Valid for claims with a date of service in the current code year.

Valid FY2016 onwards.

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 Twin pregnancy, monoamniotic/monochorionic, third trimester
FY2011 Draft description revised draft ~~Twin pregnancy, monoamniotic/monochorionic, third trimester~~ Twin pregnancy, monochorionic/monoamniotic, third trimester

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 O30 Multiple gestation

Code also

any complications specific to multiple gestation

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.

Twin > pregnancy
Pregnancy > high-risk
Supervision > pregnancy
Pregnancy > normal > high-risk
Supervision > high-risk pregnancy
Pregnancy > examination > high-risk
Encounter > pregnancy > supervision of
Pregnancy > prenatal care only > high-risk
Pregnancy > complicated by > previous history of
Pregnancy > complicated by > multiple gestations > twin
Pregnancy > twin > monochorionic/monoamniotic

Codes in the same group

Code	Description	Status
O30.011	Twin pregnancy, monochorionic/monoamniotic, first trimester	Valid
O30.012	Twin pregnancy, monochorionic/monoamniotic, second trimester	Valid
O30.019	Twin pregnancy, monochorionic/monoamniotic, unspecified trimester	Valid