DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

O30 Multiple gestation

  • Header · not billable

O30 is not billable. The category heads 88 billable codes in FY2027, grouped under 5 subdivisions.

Index → code

  • Gestation (period)multiple → O30.9-
  • Pregnancy (single) (uterine)twin → O30.00-
  • Pregnancy (single) (uterine)triplet → O30.10-
Billable codes
88
Subdivisions
5
CC / MCC codes
45 / 0
HCC V28 codes
0
New FY2027
0
Index entries
40

Codes in O30

  1. O30.0
    Twin pregnancy
    Header
  2. O30.00
    Twin pregnancy, unspecified number of placenta and unspecified number of amniotic sacs
    Header
  3. O30.001
    Twin pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, first trimester
    Billable
  4. O30.002
    Twin pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, second trimester
    Billable
  5. O30.003
    Twin pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, third trimester
    Billable
  6. O30.009
    Twin pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, unspecified trimester
    Billable
  7. O30.01
    Twin pregnancy, monochorionic/monoamniotic
    Header
    Inclusion terms 1, Excludes1 1

    Inclusion terms

    • Twin pregnancy, one placenta, one amniotic sac

    Excludes1

    • conjoined twins (O30.02-) O30.02
  8. O30.011
    Twin pregnancy, monochorionic/monoamniotic, first trimester
    Billable
  9. O30.012
    Twin pregnancy, monochorionic/monoamniotic, second trimester
    Billable
  10. O30.013
    Twin pregnancy, monochorionic/monoamniotic, third trimester
    Billable
  11. O30.019
    Twin pregnancy, monochorionic/monoamniotic, unspecified trimester
    Billable
  12. O30.02
    Conjoined twin pregnancy
    Header
  13. O30.021
    Conjoined twin pregnancy, first trimester
    Billable
  14. O30.022
    Conjoined twin pregnancy, second trimester
    Billable
  15. O30.023
    Conjoined twin pregnancy, third trimester
    Billable
  16. O30.029
    Conjoined twin pregnancy, unspecified trimester
    Billable
  17. O30.03
    Twin pregnancy, monochorionic/diamniotic
    Header
    Inclusion terms 1

    Inclusion terms

    • Twin pregnancy, one placenta, two amniotic sacs
  18. O30.031
    Twin pregnancy, monochorionic/diamniotic, first trimester
    Billable
  19. O30.032
    Twin pregnancy, monochorionic/diamniotic, second trimester
    Billable
  20. O30.033
    Twin pregnancy, monochorionic/diamniotic, third trimester
    Billable
  21. O30.039
    Twin pregnancy, monochorionic/diamniotic, unspecified trimester
    Billable
  22. O30.04
    Twin pregnancy, dichorionic/diamniotic
    Header
    Inclusion terms 1

    Inclusion terms

    • Twin pregnancy, two placentae, two amniotic sacs
  23. O30.041
    Twin pregnancy, dichorionic/diamniotic, first trimester
    Billable
  24. O30.042
    Twin pregnancy, dichorionic/diamniotic, second trimester
    Billable
  25. O30.043
    Twin pregnancy, dichorionic/diamniotic, third trimester
    Billable
  26. O30.049
    Twin pregnancy, dichorionic/diamniotic, unspecified trimester
    Billable
  27. O30.09
    Twin pregnancy, unable to determine number of placenta and number of amniotic sacs
    Header
  28. O30.091
    Twin pregnancy, unable to determine number of placenta and number of amniotic sacs, first trimester
    Billable
  29. O30.092
    Twin pregnancy, unable to determine number of placenta and number of amniotic sacs, second trimester
    Billable
  30. O30.093
    Twin pregnancy, unable to determine number of placenta and number of amniotic sacs, third trimester
    Billable
  31. O30.099
    Twin pregnancy, unable to determine number of placenta and number of amniotic sacs, unspecified trimester
    Billable
  32. O30.1
    Triplet pregnancy
    Header
  33. O30.10
    Triplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs
    Header
  34. O30.101
    Triplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, first trimester
    BillableCC
  35. O30.102
    Triplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, second trimester
    BillableCC
  36. O30.103
    Triplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, third trimester
    BillableCC
  37. O30.109
    Triplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, unspecified trimester
    Billable
  38. O30.11
    Triplet pregnancy with two or more monochorionic fetuses
    Header
  39. O30.111
    Triplet pregnancy with two or more monochorionic fetuses, first trimester
    BillableCC
  40. O30.112
    Triplet pregnancy with two or more monochorionic fetuses, second trimester
    BillableCC
  41. O30.113
    Triplet pregnancy with two or more monochorionic fetuses, third trimester
    BillableCC
  42. O30.119
    Triplet pregnancy with two or more monochorionic fetuses, unspecified trimester
    Billable
  43. O30.12
    Triplet pregnancy with two or more monoamniotic fetuses
    Header
  44. O30.121
    Triplet pregnancy with two or more monoamniotic fetuses, first trimester
    BillableCC
  45. O30.122
    Triplet pregnancy with two or more monoamniotic fetuses, second trimester
    BillableCC
  46. O30.123
    Triplet pregnancy with two or more monoamniotic fetuses, third trimester
    BillableCC
  47. O30.129
    Triplet pregnancy with two or more monoamniotic fetuses, unspecified trimester
    Billable
  48. O30.13
    Triplet pregnancy, trichorionic/triamniotic
    Header
  49. O30.131
    Triplet pregnancy, trichorionic/triamniotic, first trimester
    BillableCC
  50. O30.132
    Triplet pregnancy, trichorionic/triamniotic, second trimester
    BillableCC
  51. O30.133
    Triplet pregnancy, trichorionic/triamniotic, third trimester
    BillableCC
  52. O30.139
    Triplet pregnancy, trichorionic/triamniotic, unspecified trimester
    Billable
  53. O30.19
    Triplet pregnancy, unable to determine number of placenta and number of amniotic sacs
    Header
  54. O30.191
    Triplet pregnancy, unable to determine number of placenta and number of amniotic sacs, first trimester
    BillableCC
  55. O30.192
    Triplet pregnancy, unable to determine number of placenta and number of amniotic sacs, second trimester
    BillableCC
  56. O30.193
    Triplet pregnancy, unable to determine number of placenta and number of amniotic sacs, third trimester
    BillableCC
  57. O30.199
    Triplet pregnancy, unable to determine number of placenta and number of amniotic sacs, unspecified trimester
    Billable
  58. O30.2
    Quadruplet pregnancy
    Header
  59. O30.20
    Quadruplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs
    Header
  60. O30.201
    Quadruplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, first trimester
    BillableCC
  61. O30.202
    Quadruplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, second trimester
    BillableCC
  62. O30.203
    Quadruplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, third trimester
    BillableCC
  63. O30.209
    Quadruplet pregnancy, unspecified number of placenta and unspecified number of amniotic sacs, unspecified trimester
    Billable
  64. O30.21
    Quadruplet pregnancy with two or more monochorionic fetuses
    Header
  65. O30.211
    Quadruplet pregnancy with two or more monochorionic fetuses, first trimester
    BillableCC
  66. O30.212
    Quadruplet pregnancy with two or more monochorionic fetuses, second trimester
    BillableCC
  67. O30.213
    Quadruplet pregnancy with two or more monochorionic fetuses, third trimester
    BillableCC
  68. O30.219
    Quadruplet pregnancy with two or more monochorionic fetuses, unspecified trimester
    Billable
  69. O30.22
    Quadruplet pregnancy with two or more monoamniotic fetuses
    Header
  70. O30.221
    Quadruplet pregnancy with two or more monoamniotic fetuses, first trimester
    BillableCC
  71. O30.222
    Quadruplet pregnancy with two or more monoamniotic fetuses, second trimester
    BillableCC
  72. O30.223
    Quadruplet pregnancy with two or more monoamniotic fetuses, third trimester
    BillableCC
  73. O30.229
    Quadruplet pregnancy with two or more monoamniotic fetuses, unspecified trimester
    Billable
  74. O30.23
    Quadruplet pregnancy, quadrachorionic/quadra-amniotic
    Header
  75. O30.231
    Quadruplet pregnancy, quadrachorionic/quadra-amniotic, first trimester
    BillableCC
  76. O30.232
    Quadruplet pregnancy, quadrachorionic/quadra-amniotic, second trimester
    BillableCC
  77. O30.233
    Quadruplet pregnancy, quadrachorionic/quadra-amniotic, third trimester
    BillableCC
  78. O30.239
    Quadruplet pregnancy, quadrachorionic/quadra-amniotic, unspecified trimester
    Billable
  79. O30.29
    Quadruplet pregnancy, unable to determine number of placenta and number of amniotic sacs
    Header
  80. O30.291
    Quadruplet pregnancy, unable to determine number of placenta and number of amniotic sacs, first trimester
    BillableCC
  81. O30.292
    Quadruplet pregnancy, unable to determine number of placenta and number of amniotic sacs, second trimester
    BillableCC
  82. O30.293
    Quadruplet pregnancy, unable to determine number of placenta and number of amniotic sacs, third trimester
    BillableCC
  83. O30.299
    Quadruplet pregnancy, unable to determine number of placenta and number of amniotic sacs, unspecified trimester
    Billable
  84. O30.8
    Other specified multiple gestation
    Header
    Inclusion terms 1

    Inclusion terms

    • Multiple gestation pregnancy greater then quadruplets
  85. O30.80
    Other specified multiple gestation, unspecified number of placenta and unspecified number of amniotic sacs
    Header
  86. O30.801
    Other specified multiple gestation, unspecified number of placenta and unspecified number of amniotic sacs, first trimester
    BillableCC
  87. O30.802
    Other specified multiple gestation, unspecified number of placenta and unspecified number of amniotic sacs, second trimester
    BillableCC
  88. O30.803
    Other specified multiple gestation, unspecified number of placenta and unspecified number of amniotic sacs, third trimester
    BillableCC
  89. O30.809
    Other specified multiple gestation, unspecified number of placenta and unspecified number of amniotic sacs, unspecified trimester
    Billable
  90. O30.81
    Other specified multiple gestation with two or more monochorionic fetuses
    Header
  91. O30.811
    Other specified multiple gestation with two or more monochorionic fetuses, first trimester
    BillableCC
  92. O30.812
    Other specified multiple gestation with two or more monochorionic fetuses, second trimester
    BillableCC
  93. O30.813
    Other specified multiple gestation with two or more monochorionic fetuses, third trimester
    BillableCC
  94. O30.819
    Other specified multiple gestation with two or more monochorionic fetuses, unspecified trimester
    Billable
  95. O30.82
    Other specified multiple gestation with two or more monoamniotic fetuses
    Header
  96. O30.821
    Other specified multiple gestation with two or more monoamniotic fetuses, first trimester
    BillableCC
  97. O30.822
    Other specified multiple gestation with two or more monoamniotic fetuses, second trimester
    BillableCC
  98. O30.823
    Other specified multiple gestation with two or more monoamniotic fetuses, third trimester
    BillableCC
  99. O30.829
    Other specified multiple gestation with two or more monoamniotic fetuses, unspecified trimester
    Billable
  100. O30.83
    Other specified multiple gestation, number of chorions and amnions are both equal to the number of fetuses
    Header
    Inclusion terms 3

    Inclusion terms

    • Pentachorionic, penta-amniotic pregnancy (quintuplets)
    • Hexachorionic, hexa-amniotic pregnancy (sextuplets)
    • Heptachorionic, hepta-amniotic pregnancy (septuplets)
  101. O30.831
    Other specified multiple gestation, number of chorions and amnions are both equal to the number of fetuses, first trimester
    BillableCC
  102. O30.832
    Other specified multiple gestation, number of chorions and amnions are both equal to the number of fetuses, second trimester
    BillableCC
  103. O30.833
    Other specified multiple gestation, number of chorions and amnions are both equal to the number of fetuses, third trimester
    BillableCC
  104. O30.839
    Other specified multiple gestation, number of chorions and amnions are both equal to the number of fetuses, unspecified trimester
    Billable
  105. O30.89
    Other specified multiple gestation, unable to determine number of placenta and number of amniotic sacs
    Header
  106. O30.891
    Other specified multiple gestation, unable to determine number of placenta and number of amniotic sacs, first trimester
    BillableCC
  107. O30.892
    Other specified multiple gestation, unable to determine number of placenta and number of amniotic sacs, second trimester
    BillableCC
  108. O30.893
    Other specified multiple gestation, unable to determine number of placenta and number of amniotic sacs, third trimester
    BillableCC
  109. O30.899
    Other specified multiple gestation, unable to determine number of placenta and number of amniotic sacs, unspecified trimester
    Billable
  110. O30.9
    Multiple gestation, unspecified
    Header
    Inclusion terms 1

    Inclusion terms

    • Multiple pregnancy NOS
  111. O30.90
    Multiple gestation, unspecified, unspecified trimester
    Billable
  112. O30.91
    Multiple gestation, unspecified, first trimester
    Billable
  113. O30.92
    Multiple gestation, unspecified, second trimester
    Billable
  114. O30.93
    Multiple gestation, unspecified, third trimester
    Billable

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 O30

Code also

  • any complications specific to multiple gestation

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

  • Pregnancy (single) (uterine)twin → O30.00-
  • Pregnancy (single) (uterine)triplet → O30.10-
  • Pregnancy (single) (uterine)quadruplet → O30.20-
  • Pregnancy (single) (uterine)heptachorionic, hepta-amniotic (septuplets) → O30.83-
  • Pregnancy (single) (uterine)hexachorionic, hexa-amniotic (sextuplets) → O30.83-
  • Pregnancy (single) (uterine)pentachorionic, penta-amniotic (quintuplets) → O30.83-
  • Gestation (period)multiple → O30.9-
  • Pregnancy (single) (uterine)multiple (gestation) → O30.9-
  • Pregnancy (single) (uterine)twinunspecified number of placenta and unspecified number of amniotic sacs → O30.00-
  • Pregnancy (single) (uterine)twinmonochorionic/monoamniotic (one placenta, one amniotic sac) → O30.01-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)conjoined twins → O30.02-
  • Pregnancy (single) (uterine)twinconjoined → O30.02-
  • Pregnancy (single) (uterine)twinmonochorionic/diamniotic (one placenta, two amniotic sacs) → O30.03-
  • Pregnancy (single) (uterine)twindichorionic/diamniotic (two placenta, two amniotic sacs) → O30.04-
  • Pregnancy (single) (uterine)twinunable to determine number of placenta and number of amniotic sacs → O30.09-
  • Pregnancy (single) (uterine)tripletunspecified number of placenta and unspecified number of amniotic sacs → O30.10-
  • Pregnancy (single) (uterine)triplettwo or more monochorionic fetuses → O30.11-
  • Pregnancy (single) (uterine)triplettwo or more monoamniotic fetuses → O30.12-
  • Pregnancy (single) (uterine)triplettrichorionic/triamniotic → O30.13-
  • Pregnancy (single) (uterine)tripletunable to determine number of placenta and number of amniotic sacs → O30.19-
  • Pregnancy (single) (uterine)quadrupletunspecified number of placenta and unspecified number of amniotic sacs → O30.20-
  • Pregnancy (single) (uterine)quadruplettwo or more monochorionic fetuses → O30.21-
  • Pregnancy (single) (uterine)quadruplettwo or more monoamniotic fetuses → O30.22-
  • Pregnancy (single) (uterine)quadrupletquadrachorionic/quadra-amniotic → O30.23-
  • Pregnancy (single) (uterine)quadrupletunable to determine number of placenta and number of amniotic sacs → O30.29-
  • Pregnancy (single) (uterine)multiple (gestation)specified NEC → O30.80-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)multiple gestations → O30.9-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)fetal (maternal care for)conjoined twins → O30.02-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)multiple gestationsconjoined twins → O30.02-
  • Pregnancy (single) (uterine)tripletwithtwo or more monochorionic fetuses → O30.11-
  • Pregnancy (single) (uterine)tripletwithtwo or more monoamniotic fetuses → O30.12-
  • Pregnancy (single) (uterine)quadrupletwithtwo or more monochorionic fetuses → O30.21-
  • Pregnancy (single) (uterine)quadrupletwithtwo or more monoamniotic fetuses → O30.22-
  • Pregnancy (single) (uterine)multiple (gestation)specified NECunspecified number of placenta and unspecified number of amniotic sacs → O30.80-
  • Pregnancy (single) (uterine)multiple (gestation)specified NECtwo or more monochorionic fetuses → O30.81-
  • Pregnancy (single) (uterine)multiple (gestation)specified NECtwo or more monoamniotic fetuses → O30.82-
  • Pregnancy (single) (uterine)multiple (gestation)specified NECnumber of chorions and amnions are both equal to the number of fetuses → O30.83-
  • Pregnancy (single) (uterine)multiple (gestation)specified NECunable to determine number of placenta and number of amniotic sacs → O30.89-
  • Pregnancy (single) (uterine)multiple (gestation)specified NECwithtwo or more monochorionic fetuses → O30.81-
  • Pregnancy (single) (uterine)multiple (gestation)specified NECwithtwo or more monoamniotic fetuses → O30.82-

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy