ICD-10-CM › O00-O9A › O30-O48 › O41.1 Infection of amniotic sac and membranes › O41.10

O41.10

Infection of amniotic sac and membranes, unspecified

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 4 more specific codes instead:

  • O41.101 Infection of amniotic sac and membranes, unspecified, first trimester (also a header)
  • O41.102 Infection of amniotic sac and membranes, unspecified, second trimester (also a header)
  • O41.103 Infection of amniotic sac and membranes, unspecified, third trimester (also a header)
  • O41.109 Infection of amniotic sac and membranes, unspecified, unspecified trimester (also a header)

This code requires a seventh character. See the rule below.

What has happened to this code

Every change the publisher made, from 2012 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. FY2012 Added to the draft code set draft Infection of amniotic sac and membranes, unspecified

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 O41 Other disorders of amniotic fluid and membranes

Seventh character required

  • One of the following 7th characters is to be assigned to each code under category O41. 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 O41 that has a 7th character of 1 through 9.

Excludes1 - never coded here

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

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
O41.12 Chorioamnionitis Not billable
O41.14 Placentitis Not billable