DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

O42 Premature rupture of membranes

  • Header · not billable

O42 is not billable. The category heads 18 billable codes in FY2027, grouped under 3 subdivisions.

Index → code

  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)hydrorrhea → O42.90
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)premature rupture of membranes → O42.90
  • Delivery (childbirth) (labor)complicatedbypremature rupture, membranes → O42.90

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. O42 Premature rupture of membranes
Billable codes
18
Subdivisions
3
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
15

Codes in O42

  1. O42.0
    Premature rupture of membranes, onset of labor within 24 hours of rupture
    Header
  2. O42.00
    Premature rupture of membranes, onset of labor within 24 hours of rupture, unspecified weeks of gestation
    Billable
  3. O42.01
    Preterm premature rupture of membranes, onset of labor within 24 hours of rupture
    Header
    Inclusion terms 1

    Inclusion terms

    • Premature rupture of membranes before 37 completed weeks of gestation
  4. O42.011
    Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, first trimester
    Billable
  5. O42.012
    Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, second trimester
    Billable
  6. O42.013
    Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, third trimester
    Billable
  7. O42.019
    Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, unspecified trimester
    Billable
  8. O42.02
    Full-term premature rupture of membranes, onset of labor within 24 hours of rupture
    Billable
    Inclusion terms 1

    Inclusion terms

    • Premature rupture of membranes at or after 37 completed weeks of gestation, onset of labor within 24 hours of rupture
  9. O42.1
    Premature rupture of membranes, onset of labor more than 24 hours following rupture
    Header
  10. O42.10
    Premature rupture of membranes, onset of labor more than 24 hours following rupture, unspecified weeks of gestation
    Billable
  11. O42.11
    Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture
    Header
    Inclusion terms 1

    Inclusion terms

    • Premature rupture of membranes before 37 completed weeks of gestation
  12. O42.111
    Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, first trimester
    Billable
  13. O42.112
    Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, second trimester
    Billable
  14. O42.113
    Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, third trimester
    Billable
  15. O42.119
    Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, unspecified trimester
    Billable
  16. O42.12
    Full-term premature rupture of membranes, onset of labor more than 24 hours following rupture
    Billable
    Inclusion terms 1

    Inclusion terms

    • Premature rupture of membranes at or after 37 completed weeks of gestation, onset of labor more than 24 hours following rupture
  17. O42.9
    Premature rupture of membranes, unspecified as to length of time between rupture and onset of labor
    Header
  18. O42.90
    Premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, unspecified weeks of gestation
    Billable
  19. O42.91
    Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor
    Header
    Inclusion terms 1

    Inclusion terms

    • Premature rupture of membranes before 37 completed weeks of gestation
  20. O42.911
    Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, first trimester
    Billable
  21. O42.912
    Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, second trimester
    Billable
  22. O42.913
    Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, third trimester
    Billable
  23. O42.919
    Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, unspecified trimester
    Billable
  24. O42.92
    Full-term premature rupture of membranes, unspecified as to length of time between rupture and onset of labor
    Billable
    Inclusion terms 1

    Inclusion terms

    • Premature rupture of membranes at or after 37 completed weeks of gestation, unspecified as to length of time between rupture and onset of labor

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

  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)hydrorrhea → O42.90
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)premature rupture of membranes → O42.90
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)oligohydramnioswith premature rupture of membranes → O42.-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)ruptureamnion (premature) → O42-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)rupturemembranes (premature) → O42-
  • Delivery (childbirth) (labor)complicatedbypremature rupture, membranes → O42.90
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)premature rupture of membranespre-term (before 37 completed weeks of gestation) → O42.91-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)premature rupture of membranesfull-term, unspecified as to length of time between rupture and onset of labor → O42.92
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)premature rupture of membranesat or after 37 weeks gestation, unspecified as to length of time between rupture and onset of labor → O42.92
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)premature rupture of membraneswith onset of laborwithin 24 hours → O42.00
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)premature rupture of membraneswith onset of laborafter 24 hours → O42.10
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)premature rupture of membraneswith onset of laborwithin 24 hourspre-term (before 37 completed weeks of gestation) → O42.01-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)premature rupture of membraneswith onset of laborwithin 24 hoursat or after 37 weeks gestation, onset of labor within 24 hours of rupture → O42.02
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)premature rupture of membraneswith onset of laborafter 24 hourspre-term (before 37 completed weeks of gestation) → O42.11-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)premature rupture of membraneswith onset of laborafter 24 hoursat or after 37 weeks gestation, onset of labor more than 24 hours following rupture → O42.12

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

Hierarchy