ICD-10-CM › O00-O9A › O30-O48 › O30.02 Conjoined twin pregnancy › O30.023

O30.023

Conjoined twin pregnancy, 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 2010 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.

  1. FY2010 Added to the draft code set draft Conjoined twins, third trimester
  2. FY2012 Draft description revised draft Conjoined twins, third trimester Conjoined twin pregnancy, 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.

Codes in the same group

CodeDescriptionStatus
O30.021 Conjoined twin pregnancy, first trimester Valid
O30.022 Conjoined twin pregnancy, second trimester Valid
O30.029 Conjoined twin pregnancy, unspecified trimester Valid