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  3. O00-O9A
  4. O94-O9A
  5. Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium (O98)

Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium (O98)

The ICD-10 code section O98 covers infectious and parasitic diseases that affect a mother specifically during pregnancy, childbirth, or the puerperium. These codes are used when infections like tuberculosis, syphilis, gonorrhea, viral hepatitis, HIV, and other sexually transmitted or parasitic diseases complicate the maternal condition during these critical periods.

This section provides detailed coding options that specify the infection type and the timing of complication; such as during the first, second, or third trimester of pregnancy, childbirth itself, or the postpartum period. For example, the code O98.019 identifies maternal tuberculosis during pregnancy, childbirth, and the puerperium, while O98.119 refers to maternal syphilis complicating the same. Codes like O98.519 address other viral diseases such as Zika virus or COVID-19 affecting pregnancy. The inclusion of synonymous terms like "venereal disease in pregnancy" or "protozoal disease complicating pregnancy" helps coders connect clinical documentation to the correct ICD-10 code. These codes enable accurate classification of infections that uniquely impact maternal health during and immediately after pregnancy, supporting targeted patient care and record-keeping.

  • Pregnancy, childbirth and the puerperium (O00-O9A)

    • Other obstetric conditions, not elsewhere classified (O94-O9A)

        • Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium (O98)

        • O98 Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium
        • O98.0 Tuberculosis complicating pregnancy, childbirth and the puerperium
        • 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
        • O98.02 Tuberculosis complicating childbirth
        • O98.03 Tuberculosis complicating the puerperium
        • O98.1 Syphilis complicating pregnancy, childbirth and the puerperium
        • 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
        • O98.12 Syphilis complicating childbirth
        • O98.13 Syphilis complicating the puerperium
        • O98.2 Gonorrhea complicating pregnancy, childbirth and the puerperium
        • 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
        • O98.22 Gonorrhea complicating childbirth
        • O98.23 Gonorrhea complicating the puerperium
        • O98.3 Other infections with a predominantly sexual mode of transmission complicating pregnancy, childbirth and the puerperium
        • 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
        • O98.32 Other infections with a predominantly sexual mode of transmission complicating childbirth
        • O98.33 Other infections with a predominantly sexual mode of transmission complicating the puerperium
        • O98.4 Viral hepatitis complicating pregnancy, childbirth and the puerperium
        • 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
        • O98.42 Viral hepatitis complicating childbirth
        • O98.43 Viral hepatitis complicating the puerperium
        • O98.5 Other viral diseases complicating pregnancy, childbirth and the puerperium
        • 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
        • O98.52 Other viral diseases complicating childbirth
        • O98.53 Other viral diseases complicating the puerperium
        • O98.6 Protozoal diseases complicating pregnancy, childbirth and the puerperium
        • 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
        • O98.62 Protozoal diseases complicating childbirth
        • O98.63 Protozoal diseases complicating the puerperium
        • O98.7 Human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium
        • 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
        • O98.72 Human immunodeficiency virus [HIV] disease complicating childbirth
        • O98.73 Human immunodeficiency virus [HIV] disease complicating the puerperium
        • O98.8 Other maternal infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium
        • 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
        • O98.82 Other maternal infectious and parasitic diseases complicating childbirth
        • O98.83 Other maternal infectious and parasitic diseases complicating the puerperium
        • O98.9 Unspecified maternal infectious and parasitic disease complicating pregnancy, childbirth and the puerperium
        • 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
        • O98.92 Unspecified maternal infectious and parasitic disease complicating childbirth
        • O98.93 Unspecified maternal infectious and parasitic disease complicating the puerperium

Instructional Notations

Includes

This note appears immediately under a three character code title to further define, or give examples of, the content of the category.

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

Use Additional Code

The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.

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

Type 2 Excludes

A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

  • 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