DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

O45 Premature separation of placenta [abruptio placentae]

  • Header · not billable

O45 is not billable. The category heads 24 billable codes in FY2027, grouped under 3 subdivisions.

Index → code

  • Abruptio placentae → O45.9-
  • Couvelaire syndrome or uterus (complicating delivery) → O45.8X-
  • Abruptio placentaespecified NEC → O45.8-

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. O45 Premature separation of placenta [abruptio placentae]
Billable codes
24
Subdivisions
3
CC / MCC codes
0 / 18
HCC V28 codes
0
New FY2027
0
Index entries
20

Codes in O45

  1. O45.0
    Premature separation of placenta with coagulation defect
    Header
  2. O45.00
    Premature separation of placenta with coagulation defect, unspecified
    Header
  3. O45.001
    Premature separation of placenta with coagulation defect, unspecified, first trimester
    BillableMCC
  4. O45.002
    Premature separation of placenta with coagulation defect, unspecified, second trimester
    BillableMCC
  5. O45.003
    Premature separation of placenta with coagulation defect, unspecified, third trimester
    BillableMCC
  6. O45.009
    Premature separation of placenta with coagulation defect, unspecified, unspecified trimester
    Billable
  7. O45.01
    Premature separation of placenta with afibrinogenemia
    Header
    Inclusion terms 1

    Inclusion terms

    • Premature separation of placenta with hypofibrinogenemia
  8. O45.011
    Premature separation of placenta with afibrinogenemia, first trimester
    BillableMCC
  9. O45.012
    Premature separation of placenta with afibrinogenemia, second trimester
    BillableMCC
  10. O45.013
    Premature separation of placenta with afibrinogenemia, third trimester
    BillableMCC
  11. O45.019
    Premature separation of placenta with afibrinogenemia, unspecified trimester
    Billable
  12. O45.02
    Premature separation of placenta with disseminated intravascular coagulation
    Header
  13. O45.021
    Premature separation of placenta with disseminated intravascular coagulation, first trimester
    BillableMCC
  14. O45.022
    Premature separation of placenta with disseminated intravascular coagulation, second trimester
    BillableMCC
  15. O45.023
    Premature separation of placenta with disseminated intravascular coagulation, third trimester
    BillableMCC
  16. O45.029
    Premature separation of placenta with disseminated intravascular coagulation, unspecified trimester
    Billable
  17. O45.09
    Premature separation of placenta with other coagulation defect
    Header
  18. O45.091
    Premature separation of placenta with other coagulation defect, first trimester
    BillableMCC
  19. O45.092
    Premature separation of placenta with other coagulation defect, second trimester
    BillableMCC
  20. O45.093
    Premature separation of placenta with other coagulation defect, third trimester
    BillableMCC
  21. O45.099
    Premature separation of placenta with other coagulation defect, unspecified trimester
    Billable
  22. O45.8
    Other premature separation of placenta
    Header
  23. O45.8X
    Other premature separation of placenta
    Header
  24. O45.8X1
    Other premature separation of placenta, first trimester
    BillableMCC
  25. O45.8X2
    Other premature separation of placenta, second trimester
    BillableMCC
  26. O45.8X3
    Other premature separation of placenta, third trimester
    BillableMCC
  27. O45.8X9
    Other premature separation of placenta, unspecified trimester
    Billable
  28. O45.9
    Premature separation of placenta, unspecified
    Header
    Inclusion terms 1

    Inclusion terms

    • Abruptio placentae NOS
  29. O45.90
    Premature separation of placenta, unspecified, unspecified trimester
    Billable
  30. O45.91
    Premature separation of placenta, unspecified, first trimester
    BillableMCC
  31. O45.92
    Premature separation of placenta, unspecified, second trimester
    BillableMCC
  32. O45.93
    Premature separation of placenta, unspecified, third trimester
    BillableMCC

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

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

  • Couvelaire syndrome or uterus (complicating delivery) → O45.8X-
  • Abruptio placentae → O45.9-
  • Abruptio placentaespecified NEC → O45.8-
  • Abruptio placentaewithcoagulation defect → O45.00-
  • Abruptio placentaewithafibrinogenemia → O45.01-
  • Abruptio placentaewithhypofibrinogenemia → O45.01-
  • Abruptio placentaewithdisseminated intravascular coagulation → O45.02-
  • Delivery (childbirth) (labor)cesarean (for)abruptio placentae → O45.9-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)premature separation of placenta → O45.9-
  • Abruptio placentaewithcoagulation defectspecified NEC → O45.09-
  • Delivery (childbirth) (labor)complicatedbyCouvelaire uterus → O45.8X-
  • Delivery (childbirth) (labor)complicatedbyabruptio placentae → O45.9-
  • Hemorrhage, hemorrhagic (concealed)antepartum (with)due toabruptio placenta → O45.9-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)hemorrhagedue to premature separation, placenta → O45.9-
  • Delivery (childbirth) (labor)complicatedbyplacenta, placentalablatio → O45.9-
  • Delivery (childbirth) (labor)complicatedbyplacenta, placentalabruptio → O45.9-
  • Delivery (childbirth) (labor)complicatedbyplacenta, placentaldetachment (premature) → O45.9-
  • Delivery (childbirth) (labor)complicatedbyplacenta, placentalseparation (premature) → O45.9-
  • Delivery (childbirth) (labor)complicatedbyplacenta, placentalseparation (premature)specified NEC → O45.8X-
  • Delivery (childbirth) (labor)complicatedbyhemorrhage (uterine)due topremature separation of placenta (normally implanted) → O45.9-

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

Hierarchy