ICD-10-CM › O00-O9A › O10-O16 › O10.91 Unspecified pre-existing... › O10.911

O10.911

Unspecified pre-existing hypertension complicating pregnancy, first 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.

  1. FY2007 Added to the draft code set draft Unspecified pre-existing hypertension complicating pregnancy, first 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 O10 Pre-existing hypertension complicating pregnancy, childbirth and the puerperium

Excludes2 - not included here

  • pre-existing hypertension with superimposed pre-eclampsia complicating pregnancy, childbirth and the puerperium (O11.-)

Includes

  • pre-existing hypertension with pre-existing proteinuria complicating pregnancy, childbirth and the puerperium

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.

Showing 40 of 47 index phrases.

Codes in the same group

CodeDescriptionStatus
O10.912 Unspecified pre-existing hypertension complicating pregnancy, second trimester Valid
O10.913 Unspecified pre-existing hypertension complicating pregnancy, third trimester Valid
O10.919 Unspecified pre-existing hypertension complicating pregnancy, unspecified trimester Valid