1. O41 Other disorders of amniotic fluid and membranes

    Excludes1

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

    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.

    • 0 - not applicable or unspecified
    • 1 - fetus 1
    • 2 - fetus 2
    • 3 - fetus 3
    • 4 - fetus 4
    • 5 - fetus 5
    • 9 - other fetus
    1. O41.0 Oligohydramnios

      Inclusion term(s):

      • Oligohydramnios without rupture of membranes
      1. O41.00 Oligohydramnios, unspecified trimester

      2. O41.01 Oligohydramnios, first trimester

      3. O41.02 Oligohydramnios, second trimester

      4. O41.03 Oligohydramnios, third trimester

    2. O41.1 Infection of amniotic sac and membranes

      1. O41.10 Infection of amniotic sac and membranes, unspecified

        • O41.101 Infection of amniotic sac and membranes, unspecified, first trimester
        • O41.102 Infection of amniotic sac and membranes, unspecified, second trimester
        • O41.103 Infection of amniotic sac and membranes, unspecified, third trimester
        • O41.109 Infection of amniotic sac and membranes, unspecified, unspecified trimester
      2. O41.12 Chorioamnionitis

        • O41.121 Chorioamnionitis, first trimester
        • O41.122 Chorioamnionitis, second trimester
        • O41.123 Chorioamnionitis, third trimester
        • O41.129 Chorioamnionitis, unspecified trimester
      3. O41.14 Placentitis

        • O41.141 Placentitis, first trimester
        • O41.142 Placentitis, second trimester
        • O41.143 Placentitis, third trimester
        • O41.149 Placentitis, unspecified trimester
    3. O41.8 Other specified disorders of amniotic fluid and membranes

      1. O41.8X Other specified disorders of amniotic fluid and membranes

        • O41.8X1 Other specified disorders of amniotic fluid and membranes, first trimester
        • O41.8X2 Other specified disorders of amniotic fluid and membranes, second trimester
        • O41.8X3 Other specified disorders of amniotic fluid and membranes, third trimester
        • O41.8X9 Other specified disorders of amniotic fluid and membranes, unspecified trimester
    4. O41.9 Disorder of amniotic fluid and membranes, unspecified

      1. O41.90 Disorder of amniotic fluid and membranes, unspecified, unspecified trimester

      2. O41.91 Disorder of amniotic fluid and membranes, unspecified, first trimester

      3. O41.92 Disorder of amniotic fluid and membranes, unspecified, second trimester

      4. O41.93 Disorder of amniotic fluid and membranes, unspecified, third trimester

Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.