DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

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

  • Header · not billable

O98 is not billable. The category heads 60 billable codes in FY2027, grouped under 10 subdivisions.

Index → code

  • Puerperal, puerperium (complicated by, complications)gonorrhea → O98.23
  • Puerperal, puerperium (complicated by, complications)infectionmaternal → O98.93
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)HIV → O98.71-

Where it sits

  1. Chapter 15 Pregnancy, childbirth and the puerperium (O00-O9A)
  2. O94-O9A Other obstetric conditions, not elsewhere classified (O94-O9A)
  3. O98 Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium
Billable codes
60
Subdivisions
10
CC / MCC codes
50 / 0
HCC V28 codes
0
New FY2027
0
Index entries
50

Codes in O98

  1. O98.0
    Tuberculosis complicating pregnancy, childbirth and the puerperium
    Header
    Inclusion terms 1

    Inclusion terms

  2. O98.01
    Tuberculosis complicating pregnancy
    Header
  3. O98.011
    Tuberculosis complicating pregnancy, first trimester
    BillableCC
  4. O98.012
    Tuberculosis complicating pregnancy, second trimester
    BillableCC
  5. O98.013
    Tuberculosis complicating pregnancy, third trimester
    BillableCC
  6. O98.019
    Tuberculosis complicating pregnancy, unspecified trimester
    Billable
  7. O98.02
    Tuberculosis complicating childbirth
    BillableCC
  8. O98.03
    Tuberculosis complicating the puerperium
    BillableCC
  9. O98.1
    Syphilis complicating pregnancy, childbirth and the puerperium
    Header
    Inclusion terms 1

    Inclusion terms

  10. O98.11
    Syphilis complicating pregnancy
    Header
  11. O98.111
    Syphilis complicating pregnancy, first trimester
    BillableCC
  12. O98.112
    Syphilis complicating pregnancy, second trimester
    BillableCC
  13. O98.113
    Syphilis complicating pregnancy, third trimester
    BillableCC
  14. O98.119
    Syphilis complicating pregnancy, unspecified trimester
    Billable
  15. O98.12
    Syphilis complicating childbirth
    BillableCC
  16. O98.13
    Syphilis complicating the puerperium
    BillableCC
  17. O98.2
    Gonorrhea complicating pregnancy, childbirth and the puerperium
    Header
    Inclusion terms 1

    Inclusion terms

    • Conditions in A54.- A54
  18. O98.21
    Gonorrhea complicating pregnancy
    Header
  19. O98.211
    Gonorrhea complicating pregnancy, first trimester
    BillableCC
  20. O98.212
    Gonorrhea complicating pregnancy, second trimester
    BillableCC
  21. O98.213
    Gonorrhea complicating pregnancy, third trimester
    BillableCC
  22. O98.219
    Gonorrhea complicating pregnancy, unspecified trimester
    Billable
  23. O98.22
    Gonorrhea complicating childbirth
    BillableCC
  24. O98.23
    Gonorrhea complicating the puerperium
    BillableCC
  25. O98.3
    Other infections with a predominantly sexual mode of transmission complicating pregnancy, childbirth and the puerperium
    Header
    Inclusion terms 1

    Inclusion terms

  26. O98.31
    Other infections with a predominantly sexual mode of transmission complicating pregnancy
    Header
  27. O98.311
    Other infections with a predominantly sexual mode of transmission complicating pregnancy, first trimester
    BillableCC
  28. O98.312
    Other infections with a predominantly sexual mode of transmission complicating pregnancy, second trimester
    BillableCC
  29. O98.313
    Other infections with a predominantly sexual mode of transmission complicating pregnancy, third trimester
    BillableCC
  30. O98.319
    Other infections with a predominantly sexual mode of transmission complicating pregnancy, unspecified trimester
    Billable
  31. O98.32
    Other infections with a predominantly sexual mode of transmission complicating childbirth
    BillableCC
  32. O98.33
    Other infections with a predominantly sexual mode of transmission complicating the puerperium
    BillableCC
  33. O98.4
    Viral hepatitis complicating pregnancy, childbirth and the puerperium
    Header
    Inclusion terms 1

    Inclusion terms

  34. O98.41
    Viral hepatitis complicating pregnancy
    Header
  35. O98.411
    Viral hepatitis complicating pregnancy, first trimester
    BillableCC
  36. O98.412
    Viral hepatitis complicating pregnancy, second trimester
    BillableCC
  37. O98.413
    Viral hepatitis complicating pregnancy, third trimester
    BillableCC
  38. O98.419
    Viral hepatitis complicating pregnancy, unspecified trimester
    Billable
  39. O98.42
    Viral hepatitis complicating childbirth
    BillableCC
  40. O98.43
    Viral hepatitis complicating the puerperium
    BillableCC
  41. O98.5
    Other viral diseases complicating pregnancy, childbirth and the puerperium
    Header
    Inclusion terms 1, Excludes1 1

    Inclusion terms

    Excludes1

    • human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium (O98.7-) O98.7
  42. O98.51
    Other viral diseases complicating pregnancy
    Header
  43. O98.511
    Other viral diseases complicating pregnancy, first trimester
    BillableCC
  44. O98.512
    Other viral diseases complicating pregnancy, second trimester
    BillableCC
  45. O98.513
    Other viral diseases complicating pregnancy, third trimester
    BillableCC
  46. O98.519
    Other viral diseases complicating pregnancy, unspecified trimester
    Billable
  47. O98.52
    Other viral diseases complicating childbirth
    BillableCC
  48. O98.53
    Other viral diseases complicating the puerperium
    BillableCC
  49. O98.6
    Protozoal diseases complicating pregnancy, childbirth and the puerperium
    Header
    Inclusion terms 1

    Inclusion terms

  50. O98.61
    Protozoal diseases complicating pregnancy
    Header
  51. O98.611
    Protozoal diseases complicating pregnancy, first trimester
    BillableCC
  52. O98.612
    Protozoal diseases complicating pregnancy, second trimester
    BillableCC
  53. O98.613
    Protozoal diseases complicating pregnancy, third trimester
    BillableCC
  54. O98.619
    Protozoal diseases complicating pregnancy, unspecified trimester
    Billable
  55. O98.62
    Protozoal diseases complicating childbirth
    BillableCC
  56. O98.63
    Protozoal diseases complicating the puerperium
    BillableCC
  57. O98.7
    Human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium
    Header
    Use additional code 5

    Use additional code

    • code to identify the type of HIV disease:
    • Acquired immune deficiency syndrome (AIDS) (B20) B20
    • Asymptomatic HIV status (Z21) Z21
    • HIV positive NOS (Z21) Z21
    • Symptomatic HIV disease (B20) B20
  58. O98.71
    Human immunodeficiency virus [HIV] disease complicating pregnancy
    Header
  59. O98.711
    Human immunodeficiency virus [HIV] disease complicating pregnancy, first trimester
    BillableCC
  60. O98.712
    Human immunodeficiency virus [HIV] disease complicating pregnancy, second trimester
    BillableCC
  61. O98.713
    Human immunodeficiency virus [HIV] disease complicating pregnancy, third trimester
    BillableCC
  62. O98.719
    Human immunodeficiency virus [HIV] disease complicating pregnancy, unspecified trimester
    Billable
  63. O98.72
    Human immunodeficiency virus [HIV] disease complicating childbirth
    BillableCC
  64. O98.73
    Human immunodeficiency virus [HIV] disease complicating the puerperium
    BillableCC
  65. O98.8
    Other maternal infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium
    Header
  66. O98.81
    Other maternal infectious and parasitic diseases complicating pregnancy
    Header
  67. O98.811
    Other maternal infectious and parasitic diseases complicating pregnancy, first trimester
    BillableCC
  68. O98.812
    Other maternal infectious and parasitic diseases complicating pregnancy, second trimester
    BillableCC
  69. O98.813
    Other maternal infectious and parasitic diseases complicating pregnancy, third trimester
    BillableCC
  70. O98.819
    Other maternal infectious and parasitic diseases complicating pregnancy, unspecified trimester
    Billable
  71. O98.82
    Other maternal infectious and parasitic diseases complicating childbirth
    BillableCC
  72. O98.83
    Other maternal infectious and parasitic diseases complicating the puerperium
    BillableCC
  73. O98.9
    Unspecified maternal infectious and parasitic disease complicating pregnancy, childbirth and the puerperium
    Header
  74. O98.91
    Unspecified maternal infectious and parasitic disease complicating pregnancy
    Header
  75. O98.911
    Unspecified maternal infectious and parasitic disease complicating pregnancy, first trimester
    BillableCC
  76. O98.912
    Unspecified maternal infectious and parasitic disease complicating pregnancy, second trimester
    BillableCC
  77. O98.913
    Unspecified maternal infectious and parasitic disease complicating pregnancy, third trimester
    BillableCC
  78. O98.919
    Unspecified maternal infectious and parasitic disease complicating pregnancy, unspecified trimester
    Billable
  79. O98.92
    Unspecified maternal infectious and parasitic disease complicating childbirth
    BillableCC
  80. O98.93
    Unspecified maternal infectious and parasitic disease complicating the puerperium
    BillableCC

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At O98

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-) O26.4
  • infectious carrier state (O99.82-, O99.83-) O99.82 O99.83
  • obstetrical tetanus (A34) A34
  • puerperal infection (O86.-) O86
  • puerperal sepsis (O85) O85
  • when the reason for maternal care is that the disease is known or suspected to have affected the fetus (O35-O36) O35 O36

Use additional code

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

Notes that also apply

Chapter 15 instructions (Notes 6, Excludes1 1, Excludes2 4, Use additional code 1): printed on the chapter 15 page.

Index entries

  • Puerperal, puerperium (complicated by, complications)gonorrhea → O98.23
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)tuberculosis (conditions in A15-A19) → O98.01-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)syphilis (conditions in A50-A53) → O98.11-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)gonorrhea → O98.21-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)genital herpes (asymptomatic) (history of) (inactive) → O98.3-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)venereal disease NEC (conditions in A63.8) → O98.31-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)hepatitis (viral) → O98.41-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)viral diseases (conditions in A80-B09, B25-B34) → O98.51-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)HIV → O98.71-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)human immunodeficiency virus (HIV) disease → O98.71-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)sepsis (conditions in A40, A41) → O98.81-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)infection(s) → O98.91-
  • Puerperal, puerperium (complicated by, complications)infectionmaternal → O98.93
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)infection(s)tuberculosis → O98.01-
  • Delivery (childbirth) (labor)complicatedbytuberculosis (maternal) → O98.02
  • Puerperal, puerperium (complicated by, complications)infectionmaternaltuberculosis → O98.03
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)infection(s)syphilis → O98.11-
  • Delivery (childbirth) (labor)complicatedbysyphilis (maternal) → O98.12
  • Puerperal, puerperium (complicated by, complications)infectionmaternalsyphilis → O98.13
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)infection(s)gonorrhea → O98.21-
  • Delivery (childbirth) (labor)complicatedbygonorrhea → O98.22
  • Puerperal, puerperium (complicated by, complications)infectionmaternalgonorrhea → O98.23
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)infection(s)sexually transmitted NEC → O98.31-
  • Puerperal, puerperium (complicated by, complications)infectionmaternalsexually transmitted NEC → O98.33
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)infection(s)hepatitis (viral) → O98.41-
  • Puerperal, puerperium (complicated by, complications)infectionmaternalviral hepatitis → O98.43
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)infection(s)viral disease → O98.51-
  • Puerperal, puerperium (complicated by, complications)infectionmaternalviral NEC → O98.53
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)infection(s)protozoal disease → O98.61-
  • Delivery (childbirth) (labor)complicatedbyprotozoal disease (maternal) → O98.62
  • Puerperal, puerperium (complicated by, complications)infectionmaternalprotozoal → O98.63
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)infection(s)HIV → O98.71-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)infection(s)human immunodeficiency virus (HIV) → O98.71-
  • Puerperal, puerperium (complicated by, complications)infectionmaternalhuman immunodeficiency virus (HIV) → O98.73
  • Infection, infected, infective (opportunistic)streptococcal NECB genitourinary complicatingpregnancy → O98.81-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)infection(s)specified type NEC → O98.81-
  • Infection, infected, infective (opportunistic)streptococcal NECB genitourinary complicatingchildbirth → O98.82
  • Infection, infected, infective (opportunistic)streptococcal NECB genitourinary complicatingpuerperium → O98.83
  • Puerperal, puerperium (complicated by, complications)infectionmaternalspecified NEC → O98.83
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)infection(s)parasitic disease → O98.91-

10 more, longer entries are not listed; the search box finds them by word.

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Hierarchy