DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

O34 Maternal care for abnormality of pelvic organs

  • Header · not billable

O34 is not billable. The category heads 54 billable codes in FY2027, grouped under 10 subdivisions.

Index → code

  • Cesarean delivery, previous, affecting management of pregnancy → O34.219
  • Scar, scarringdefect (isthmocele) → O34.22
  • Fibroid (tumor)in pregnancy or childbirth → O34.1-

Where it sits

  1. Chapter 15 Pregnancy, childbirth and the puerperium (O00-O9A)
  2. O30-O48 Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)
  3. O34 Maternal care for abnormality of pelvic organs
Billable codes
54
Subdivisions
10
CC / MCC codes
0 / 3
HCC V28 codes
0
New FY2027
0
Index entries
108

Codes in O34

  1. O34.0
    Maternal care for congenital malformation of uterus
    Header
    Inclusion terms 2

    Inclusion terms

    • Maternal care for double uterus
    • Maternal care for uterus bicornis
  2. O34.00
    Maternal care for unspecified congenital malformation of uterus, unspecified trimester
    Billable
  3. O34.01
    Maternal care for unspecified congenital malformation of uterus, first trimester
    Billable
  4. O34.02
    Maternal care for unspecified congenital malformation of uterus, second trimester
    Billable
  5. O34.03
    Maternal care for unspecified congenital malformation of uterus, third trimester
    Billable
  6. O34.1
    Maternal care for benign tumor of corpus uteri
    Header
    Excludes2 2

    Excludes2

    • maternal care for benign tumor of cervix (O34.4-) O34.4
    • maternal care for malignant neoplasm of uterus (O9A.1-) O9A.1
  7. O34.10
    Maternal care for benign tumor of corpus uteri, unspecified trimester
    Billable
  8. O34.11
    Maternal care for benign tumor of corpus uteri, first trimester
    Billable
  9. O34.12
    Maternal care for benign tumor of corpus uteri, second trimester
    Billable
  10. O34.13
    Maternal care for benign tumor of corpus uteri, third trimester
    Billable
  11. O34.2
    Maternal care due to uterine scar from previous surgery
    Header
  12. O34.21
    Maternal care for scar from previous cesarean delivery
    Header
  13. O34.211
    Maternal care for low transverse scar from previous cesarean delivery
    Billable
  14. O34.212
    Maternal care for vertical scar from previous cesarean delivery
    Billable
    Inclusion terms 1

    Inclusion terms

    • Maternal care for classical scar from previous cesarean delivery
  15. O34.218
    Maternal care for other type scar from previous cesarean delivery
    Billable
    Inclusion terms 1

    Inclusion terms

    • Mid-transverse T incision
  16. O34.219
    Maternal care for unspecified type scar from previous cesarean delivery
    Billable
  17. O34.22
    Maternal care for cesarean scar defect (isthmocele)
    Billable
  18. O34.29
    Maternal care due to uterine scar from other previous surgery
    Billable
    Inclusion terms 1

    Inclusion terms

    • Maternal care due to uterine scar from other transmural uterine incision
  19. O34.3
    Maternal care for cervical incompetence
    Header
    Inclusion terms 2

    Inclusion terms

    • Maternal care for cerclage with or without cervical incompetence
    • Maternal care for Shirodkar suture with or without cervical incompetence
  20. O34.30
    Maternal care for cervical incompetence, unspecified trimester
    Billable
  21. O34.31
    Maternal care for cervical incompetence, first trimester
    BillableMCC
  22. O34.32
    Maternal care for cervical incompetence, second trimester
    BillableMCC
  23. O34.33
    Maternal care for cervical incompetence, third trimester
    BillableMCC
  24. O34.4
    Maternal care for other abnormalities of cervix
    Header
  25. O34.40
    Maternal care for other abnormalities of cervix, unspecified trimester
    Billable
  26. O34.41
    Maternal care for other abnormalities of cervix, first trimester
    Billable
  27. O34.42
    Maternal care for other abnormalities of cervix, second trimester
    Billable
  28. O34.43
    Maternal care for other abnormalities of cervix, third trimester
    Billable
  29. O34.5
    Maternal care for other abnormalities of gravid uterus
    Header
  30. O34.51
    Maternal care for incarceration of gravid uterus
    Header
  31. O34.511
    Maternal care for incarceration of gravid uterus, first trimester
    Billable
  32. O34.512
    Maternal care for incarceration of gravid uterus, second trimester
    Billable
  33. O34.513
    Maternal care for incarceration of gravid uterus, third trimester
    Billable
  34. O34.519
    Maternal care for incarceration of gravid uterus, unspecified trimester
    Billable
  35. O34.52
    Maternal care for prolapse of gravid uterus
    Header
  36. O34.521
    Maternal care for prolapse of gravid uterus, first trimester
    Billable
  37. O34.522
    Maternal care for prolapse of gravid uterus, second trimester
    Billable
  38. O34.523
    Maternal care for prolapse of gravid uterus, third trimester
    Billable
  39. O34.529
    Maternal care for prolapse of gravid uterus, unspecified trimester
    Billable
  40. O34.53
    Maternal care for retroversion of gravid uterus
    Header
  41. O34.531
    Maternal care for retroversion of gravid uterus, first trimester
    Billable
  42. O34.532
    Maternal care for retroversion of gravid uterus, second trimester
    Billable
  43. O34.533
    Maternal care for retroversion of gravid uterus, third trimester
    Billable
  44. O34.539
    Maternal care for retroversion of gravid uterus, unspecified trimester
    Billable
  45. O34.59
    Maternal care for other abnormalities of gravid uterus
    Header
  46. O34.591
    Maternal care for other abnormalities of gravid uterus, first trimester
    Billable
  47. O34.592
    Maternal care for other abnormalities of gravid uterus, second trimester
    Billable
  48. O34.593
    Maternal care for other abnormalities of gravid uterus, third trimester
    Billable
  49. O34.599
    Maternal care for other abnormalities of gravid uterus, unspecified trimester
    Billable
  50. O34.6
    Maternal care for abnormality of vagina
    Header
    Excludes2 1

    Excludes2

    • maternal care for vaginal varices in pregnancy (O22.1-) O22.1
  51. O34.60
    Maternal care for abnormality of vagina, unspecified trimester
    Billable
  52. O34.61
    Maternal care for abnormality of vagina, first trimester
    Billable
  53. O34.62
    Maternal care for abnormality of vagina, second trimester
    Billable
  54. O34.63
    Maternal care for abnormality of vagina, third trimester
    Billable
  55. O34.7
    Maternal care for abnormality of vulva and perineum
    Header
    Excludes2 1

    Excludes2

    • maternal care for perineal and vulval varices in pregnancy (O22.1-) O22.1
  56. O34.70
    Maternal care for abnormality of vulva and perineum, unspecified trimester
    Billable
  57. O34.71
    Maternal care for abnormality of vulva and perineum, first trimester
    Billable
  58. O34.72
    Maternal care for abnormality of vulva and perineum, second trimester
    Billable
  59. O34.73
    Maternal care for abnormality of vulva and perineum, third trimester
    Billable
  60. O34.8
    Maternal care for other abnormalities of pelvic organs
    Header
  61. O34.80
    Maternal care for other abnormalities of pelvic organs, unspecified trimester
    Billable
  62. O34.81
    Maternal care for other abnormalities of pelvic organs, first trimester
    Billable
  63. O34.82
    Maternal care for other abnormalities of pelvic organs, second trimester
    Billable
  64. O34.83
    Maternal care for other abnormalities of pelvic organs, third trimester
    Billable
  65. O34.9
    Maternal care for abnormality of pelvic organ, unspecified
    Header
  66. O34.90
    Maternal care for abnormality of pelvic organ, unspecified, unspecified trimester
    Billable
  67. O34.91
    Maternal care for abnormality of pelvic organ, unspecified, first trimester
    Billable
  68. O34.92
    Maternal care for abnormality of pelvic organ, unspecified, second trimester
    Billable
  69. O34.93
    Maternal care for abnormality of pelvic organ, 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 O34

Includes

  • the listed conditions as a reason for hospitalization or other obstetric care of the mother, or for cesarean delivery before onset of labor

Code first

  • any associated obstructed labor (O65.5) O65.5

Use additional code

  • code for specific condition

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

  • Cesarean delivery, previous, affecting management of pregnancy → O34.219
  • Bicornate or bicornis uterusin pregnancy or childbirth → O34.00
  • Unicornate uterusin pregnancy or childbirth → O34.00
  • Fibroid (tumor)in pregnancy or childbirth → O34.1-
  • Cesarean delivery, previous, affecting management of pregnancylow transverse scar → O34.211
  • Cesarean delivery, previous, affecting management of pregnancyclassical (vertical) scar → O34.212
  • Cesarean delivery, previous, affecting management of pregnancymid-transverse T incision → O34.218
  • Delivery (childbirth) (labor)vaginal, following previous cesarean delivery → O34.219
  • Scar, scarringdefect (isthmocele) → O34.22
  • Scar, scarringtransmural uterine, in pregnancy → O34.29
  • Fibrosis, fibroticperineum, in pregnancy or childbirth → O34.7-
  • Cystocele (-urethrocele)in pregnancy or childbirth → O34.8-
  • Doubleuterusin pregnancy or childbirth → O34.0-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)bicornis or bicornuate uterus → O34.0-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)double uterus → O34.0-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)fibroid (tumor) (uterus) → O34.1-
  • Delivery (childbirth) (labor)vaginal, following previous cesarean deliverylow transverse scar → O34.211
  • Delivery (childbirth) (labor)vaginal, following previous cesarean deliveryclassical (vertical) scar → O34.212
  • Cesarean delivery, previous, affecting management of pregnancyscarspecified type NEC → O34.218
  • Delivery (childbirth) (labor)vaginal, following previous cesarean deliverymid-transverse T incision → O34.218
  • Cesarean delivery, previous, affecting management of pregnancyisthmocele (non-pregnant state)maternal care for → O34.22
  • Delivery (childbirth) (labor)cesarean (for)isthmocele → O34.22
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)cesarean scar defect (isthmocele) → O34.22
  • Delivery (childbirth) (labor)cesarean (for)transmural uterine scar → O34.29
  • Scar, scarringuterusin pregnancy → O34.29
  • Delivery (childbirth) (labor)cesarean (for)cerclage → O34.3-
  • Delivery (childbirth) (labor)cesarean (for)Shirodkar suture in situ → O34.3-
  • Incompetency, incompetent, incompetencecervix, cervical (os)in pregnancy → O34.3-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)incompetent cervix → O34.3-
  • Delivery (childbirth) (labor)cesarean (for)cicatrix of cervix → O34.4-
  • Delivery (childbirth) (labor)cesarean (for)polyp, cervix → O34.4-
  • Delivery (childbirth) (labor)cesarean (for)stenosis or stricture, cervix → O34.4-
  • Delivery (childbirth) (labor)cesarean (for)incarceration of uterus → O34.51-
  • Incarceration, incarcerateduterusgravid → O34.51-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)incarceration, uterus → O34.51-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)prolapse, uterus → O34.52-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)retroversion, uterus → O34.53-
  • Retroversion, retroverteduterus (acquired) (acute) (any degree) (asymptomatic) (cervix) (postinfectional) (postpartal, old)in pregnancy → O34.53-
  • Delivery (childbirth) (labor)cesarean (for)lateroversion, uterus → O34.59-
  • Delivery (childbirth) (labor)cesarean (for)sacculation, pregnant uterus → O34.59-

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

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

Hierarchy