DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

O43 Placental disorders

  • Header · not billable

O43 is not billable. The category heads 48 billable codes in FY2027, grouped under 5 subdivisions.

Index → code

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. O43 Placental disorders
Billable codes
48
Subdivisions
5
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
36

Codes in O43

  1. O43.0
    Placental transfusion syndromes
    Header
  2. O43.01
    Fetomaternal placental transfusion syndrome
    Header
    Inclusion terms 1

    Inclusion terms

    • Maternofetal placental transfusion syndrome
  3. O43.011
    Fetomaternal placental transfusion syndrome, first trimester
    Billable
  4. O43.012
    Fetomaternal placental transfusion syndrome, second trimester
    Billable
  5. O43.013
    Fetomaternal placental transfusion syndrome, third trimester
    Billable
  6. O43.019
    Fetomaternal placental transfusion syndrome, unspecified trimester
    Billable
  7. O43.02
    Fetus-to-fetus placental transfusion syndrome
    Header
  8. O43.021
    Fetus-to-fetus placental transfusion syndrome, first trimester
    Billable
  9. O43.022
    Fetus-to-fetus placental transfusion syndrome, second trimester
    Billable
  10. O43.023
    Fetus-to-fetus placental transfusion syndrome, third trimester
    Billable
  11. O43.029
    Fetus-to-fetus placental transfusion syndrome, unspecified trimester
    Billable
  12. O43.1
    Malformation of placenta
    Header
  13. O43.10
    Malformation of placenta, unspecified
    Header
    Inclusion terms 1

    Inclusion terms

    • Abnormal placenta NOS
  14. O43.101
    Malformation of placenta, unspecified, first trimester
    Billable
  15. O43.102
    Malformation of placenta, unspecified, second trimester
    Billable
  16. O43.103
    Malformation of placenta, unspecified, third trimester
    Billable
  17. O43.109
    Malformation of placenta, unspecified, unspecified trimester
    Billable
  18. O43.11
    Circumvallate placenta
    Header
  19. O43.111
    Circumvallate placenta, first trimester
    Billable
  20. O43.112
    Circumvallate placenta, second trimester
    Billable
  21. O43.113
    Circumvallate placenta, third trimester
    Billable
  22. O43.119
    Circumvallate placenta, unspecified trimester
    Billable
  23. O43.12
    Velamentous insertion of umbilical cord
    Header
  24. O43.121
    Velamentous insertion of umbilical cord, first trimester
    Billable
  25. O43.122
    Velamentous insertion of umbilical cord, second trimester
    Billable
  26. O43.123
    Velamentous insertion of umbilical cord, third trimester
    Billable
  27. O43.129
    Velamentous insertion of umbilical cord, unspecified trimester
    Billable
  28. O43.19
    Other malformation of placenta
    Header
  29. O43.191
    Other malformation of placenta, first trimester
    Billable
  30. O43.192
    Other malformation of placenta, second trimester
    Billable
  31. O43.193
    Other malformation of placenta, third trimester
    Billable
  32. O43.199
    Other malformation of placenta, unspecified trimester
    Billable
  33. O43.2
    Morbidly adherent placenta
    Header
    Excludes1 1, Code also 1

    Excludes1

    • retained placenta (O73.-) O73

    Code also

    • associated third stage postpartum hemorrhage, if applicable (O72.0) O72.0
  34. O43.21
    Placenta accreta
    Header
  35. O43.211
    Placenta accreta, first trimester
    Billable
  36. O43.212
    Placenta accreta, second trimester
    Billable
  37. O43.213
    Placenta accreta, third trimester
    Billable
  38. O43.219
    Placenta accreta, unspecified trimester
    Billable
  39. O43.22
    Placenta increta
    Header
  40. O43.221
    Placenta increta, first trimester
    Billable
  41. O43.222
    Placenta increta, second trimester
    Billable
  42. O43.223
    Placenta increta, third trimester
    Billable
  43. O43.229
    Placenta increta, unspecified trimester
    Billable
  44. O43.23
    Placenta percreta
    Header
  45. O43.231
    Placenta percreta, first trimester
    Billable
  46. O43.232
    Placenta percreta, second trimester
    Billable
  47. O43.233
    Placenta percreta, third trimester
    Billable
  48. O43.239
    Placenta percreta, unspecified trimester
    Billable
  49. O43.8
    Other placental disorders
    Header
  50. O43.81
    Placental infarction
    Header
  51. O43.811
    Placental infarction, first trimester
    Billable
  52. O43.812
    Placental infarction, second trimester
    Billable
  53. O43.813
    Placental infarction, third trimester
    Billable
  54. O43.819
    Placental infarction, unspecified trimester
    Billable
  55. O43.89
    Other placental disorders
    Header
    Inclusion terms 1

    Inclusion terms

    • Placental dysfunction
  56. O43.891
    Other placental disorders, first trimester
    Billable
  57. O43.892
    Other placental disorders, second trimester
    Billable
  58. O43.893
    Other placental disorders, third trimester
    Billable
  59. O43.899
    Other placental disorders, unspecified trimester
    Billable
  60. O43.9
    Unspecified placental disorder
    Header
  61. O43.90
    Unspecified placental disorder, unspecified trimester
    Billable
  62. O43.91
    Unspecified placental disorder, first trimester
    Billable
  63. O43.92
    Unspecified placental disorder, second trimester
    Billable
  64. O43.93
    Unspecified placental disorder, third trimester
    Billable

Sources of each column.

Instructions

At O43

Excludes2

  • maternal care for poor fetal growth due to placental insufficiency (O36.5-) O36.5
  • placenta previa (O44.-) O44
  • placental polyp (O90.89) O90.89
  • placentitis (O41.14-) O41.14
  • premature separation of placenta [abruptio placentae] (O45.-) O45

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

  • Circumvallate placenta → O43.11-
  • Battledore placenta → O43.19-
  • Membranacea placenta → O43.19-
  • Multipartita placenta → O43.19-
  • Succenturiate placenta → O43.19-
  • Tripartite placenta → O43.19-
  • Accreta placenta → O43.21-
  • Increta placenta → O43.22-
  • Percreta placenta → O43.23-
  • Insertioncord (umbilical) lateral or velamentous → O43.12-
  • Cyst (colloid) (mucous) (simple) (retention)placenta → O43.19-
  • Infarct, infarctionplacenta → O43.81-
  • Hematoma (traumatic) (skin surface intact)placenta → O43.89-
  • Varix (lower limb)placenta → O43.89-
  • Delivery (childbirth) (labor)cesarean (for)fetal-maternal hemorrhage → O43.01-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)placenta accreta → O43.21-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)placenta increta → O43.22-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)placenta percreta → O43.23-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)placental infarction → O43.81-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)placental dysfunction → O43.89-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)placental disorder → O43.9-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)placental transfusion syndromesfetomaternal → O43.01-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)placental transfusion syndromesmaternofetal → O43.01-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)placental transfusion syndromesfetus to fetus → O43.02-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)malformationplacenta, placental (vessel) → O43.10-
  • Delivery (childbirth) (labor)complicatedbyvelamentous insertion of cord → O43.12-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)placental disorderspecified NEC → O43.89-
  • Delivery (childbirth) (labor)complicatedbyplacenta, placentalmalformation → O43.10-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)malformationplacenta, placental (vessel)specified NEC → O43.19-
  • Delivery (childbirth) (labor)complicatedbyplacenta, placentalaccreta → O43.21-
  • Delivery (childbirth) (labor)complicatedbyplacenta, placentalincreta → O43.22-
  • Delivery (childbirth) (labor)complicatedbyplacenta, placentalpercreta → O43.23-
  • Delivery (childbirth) (labor)complicatedbyplacenta, placentalabnormality → O43.9-
  • Delivery (childbirth) (labor)complicatedbyplacenta, placentaldisorder → O43.9-
  • Delivery (childbirth) (labor)complicatedbyplacenta, placentalabnormalityspecified NEC → O43.89-
  • Delivery (childbirth) (labor)complicatedbyplacenta, placentaldisorderspecified NEC → O43.89-

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

Hierarchy