1. O98 Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

    Use additional code (Chapter 1), to identify specific infectious or parasitic disease

    Includes:

    • the listed conditions when complicating the pregnant state, when aggravated by the pregnancy, or as a reason for obstetric care

    Excludes2

    • herpes gestationis (O26.4-)
    • infectious carrier state (O99.82-, O99.83-)
    • obstetrical tetanus (A34)
    • puerperal infection (O86.-)
    • puerperal sepsis (O85)
    • when the reason for maternal care is that the disease is known or suspected to have affected the fetus (O35-O36)
    1. O98.0 Tuberculosis complicating pregnancy, childbirth and the puerperium

      Inclusion term(s):

      • Conditions in A15-A19
      1. O98.01 Tuberculosis complicating pregnancy

        • O98.011 Tuberculosis complicating pregnancy, first trimester
        • O98.012 Tuberculosis complicating pregnancy, second trimester
        • O98.013 Tuberculosis complicating pregnancy, third trimester
        • O98.019 Tuberculosis complicating pregnancy, unspecified trimester
      2. O98.02 Tuberculosis complicating childbirth

      3. O98.03 Tuberculosis complicating the puerperium

    2. O98.1 Syphilis complicating pregnancy, childbirth and the puerperium

      Inclusion term(s):

      • Conditions in A50-A53
      1. O98.11 Syphilis complicating pregnancy

        • O98.111 Syphilis complicating pregnancy, first trimester
        • O98.112 Syphilis complicating pregnancy, second trimester
        • O98.113 Syphilis complicating pregnancy, third trimester
        • O98.119 Syphilis complicating pregnancy, unspecified trimester
      2. O98.12 Syphilis complicating childbirth

      3. O98.13 Syphilis complicating the puerperium

    3. O98.2 Gonorrhea complicating pregnancy, childbirth and the puerperium

      Inclusion term(s):

      • Conditions in A54.-
      1. O98.21 Gonorrhea complicating pregnancy

        • O98.211 Gonorrhea complicating pregnancy, first trimester
        • O98.212 Gonorrhea complicating pregnancy, second trimester
        • O98.213 Gonorrhea complicating pregnancy, third trimester
        • O98.219 Gonorrhea complicating pregnancy, unspecified trimester
      2. O98.22 Gonorrhea complicating childbirth

      3. O98.23 Gonorrhea complicating the puerperium

    4. O98.3 Other infections with a predominantly sexual mode of transmission complicating pregnancy, childbirth and the puerperium

      Inclusion term(s):

      • Conditions in A55-A64
      1. O98.31 Other infections with a predominantly sexual mode of transmission complicating pregnancy

        • O98.311 Other infections with a predominantly sexual mode of transmission complicating pregnancy, first trimester
        • O98.312 Other infections with a predominantly sexual mode of transmission complicating pregnancy, second trimester
        • O98.313 Other infections with a predominantly sexual mode of transmission complicating pregnancy, third trimester
        • O98.319 Other infections with a predominantly sexual mode of transmission complicating pregnancy, unspecified trimester
      2. O98.32 Other infections with a predominantly sexual mode of transmission complicating childbirth

      3. O98.33 Other infections with a predominantly sexual mode of transmission complicating the puerperium

    5. O98.4 Viral hepatitis complicating pregnancy, childbirth and the puerperium

      Inclusion term(s):

      • Conditions in B15-B19
      1. O98.41 Viral hepatitis complicating pregnancy

        • O98.411 Viral hepatitis complicating pregnancy, first trimester
        • O98.412 Viral hepatitis complicating pregnancy, second trimester
        • O98.413 Viral hepatitis complicating pregnancy, third trimester
        • O98.419 Viral hepatitis complicating pregnancy, unspecified trimester
      2. O98.42 Viral hepatitis complicating childbirth

      3. O98.43 Viral hepatitis complicating the puerperium

    6. O98.5 Other viral diseases complicating pregnancy, childbirth and the puerperium

      Inclusion term(s):

      • Conditions in A80-B09, B25-B34, R87.81-, R87.82-
      1. O98.51 Other viral diseases complicating pregnancy

        • O98.511 Other viral diseases complicating pregnancy, first trimester
        • O98.512 Other viral diseases complicating pregnancy, second trimester
        • O98.513 Other viral diseases complicating pregnancy, third trimester
        • O98.519 Other viral diseases complicating pregnancy, unspecified trimester
      2. O98.52 Other viral diseases complicating childbirth

      3. O98.53 Other viral diseases complicating the puerperium

    7. O98.6 Protozoal diseases complicating pregnancy, childbirth and the puerperium

      Inclusion term(s):

      • Conditions in B50-B64
      1. O98.61 Protozoal diseases complicating pregnancy

        • O98.611 Protozoal diseases complicating pregnancy, first trimester
        • O98.612 Protozoal diseases complicating pregnancy, second trimester
        • O98.613 Protozoal diseases complicating pregnancy, third trimester
        • O98.619 Protozoal diseases complicating pregnancy, unspecified trimester
      2. O98.62 Protozoal diseases complicating childbirth

      3. O98.63 Protozoal diseases complicating the puerperium

    8. O98.7 Human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium

      1. O98.71 Human immunodeficiency virus [HIV] disease complicating pregnancy

        • O98.711 Human immunodeficiency virus [HIV] disease complicating pregnancy, first trimester
        • O98.712 Human immunodeficiency virus [HIV] disease complicating pregnancy, second trimester
        • O98.713 Human immunodeficiency virus [HIV] disease complicating pregnancy, third trimester
        • O98.719 Human immunodeficiency virus [HIV] disease complicating pregnancy, unspecified trimester
      2. O98.72 Human immunodeficiency virus [HIV] disease complicating childbirth

      3. O98.73 Human immunodeficiency virus [HIV] disease complicating the puerperium

    9. O98.8 Other maternal infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium

      1. O98.81 Other maternal infectious and parasitic diseases complicating pregnancy

        • O98.811 Other maternal infectious and parasitic diseases complicating pregnancy, first trimester
        • O98.812 Other maternal infectious and parasitic diseases complicating pregnancy, second trimester
        • O98.813 Other maternal infectious and parasitic diseases complicating pregnancy, third trimester
        • O98.819 Other maternal infectious and parasitic diseases complicating pregnancy, unspecified trimester
      2. O98.82 Other maternal infectious and parasitic diseases complicating childbirth

      3. O98.83 Other maternal infectious and parasitic diseases complicating the puerperium

    10. O98.9 Unspecified maternal infectious and parasitic disease complicating pregnancy, childbirth and the puerperium

      1. O98.91 Unspecified maternal infectious and parasitic disease complicating pregnancy

        • O98.911 Unspecified maternal infectious and parasitic disease complicating pregnancy, first trimester
        • O98.912 Unspecified maternal infectious and parasitic disease complicating pregnancy, second trimester
        • O98.913 Unspecified maternal infectious and parasitic disease complicating pregnancy, third trimester
        • O98.919 Unspecified maternal infectious and parasitic disease complicating pregnancy, unspecified trimester
      2. O98.92 Unspecified maternal infectious and parasitic disease complicating childbirth

      3. O98.93 Unspecified maternal infectious and parasitic disease complicating the puerperium

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.