DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Block · Chapter 15

O30-O48 Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)

Block O30-O48 groups 16 categories with 1,377 billable codes in FY2027. 28 codes are new this year.

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)

Neighbouring blocks

Categories
16
Billable codes
1,377
CC codes
149
MCC codes
105
HCC V28 codes
0
New FY2027
28

Categories in O30-O48

  • O30

    Multiple gestation

    Gestation (period)multiple → O30.9-

    • 88 billable codes
    • 45 CC
  • O31

    Complications specific to multiple gestation

    Papyraceous fetus → O31.0-

    • 168 billable codes
    • 21 CC
    • 28 new
  • O32

    Maternal care for malpresentation of fetus

    Breech presentation (mother) → O32.1

    • 56 billable codes
  • O33

    Maternal care for disproportion

    Android pelviswith disproportion (fetopelvic) → O33.3

    • 40 billable codes
    • 1 CC
  • O34

    Maternal care for abnormality of pelvic organs

    Cesarean delivery, previous, affecting management of pregnancy → O34.219

    • 54 billable codes
    • 3 MCC
  • O35

    Maternal care for known or suspected fetal abnormality and damage

    Rubella (German measles)maternalcare for (suspected) damage to fetus → O35.3

    • 231 billable codes
  • O36

    Maternal care for other fetal problems

    Misseddelivery → O36.4

    • 399 billable codes
    • 49 CC
  • O40

    Polyhydramnios

    Hydramnios → O40.-

    • 28 billable codes
  • O41

    Other disorders of amniotic fluid and membranes

    Triple I → O41.12-

    • 168 billable codes
    • 21 CC
    • 63 MCC
  • O42

    Premature rupture of membranes

    Pregnancy (single) (uterine)complicated by (care of) (management affected by)hydrorrhea → O42.90

    • 18 billable codes
  • O43

    Placental disorders

    Accreta placenta → O43.21-

    • 48 billable codes
  • O44

    Placenta previa

    Previaplacenta (total) (without hemorrhage) → O44.0-

    • 24 billable codes
    • 9 CC
    • 9 MCC
  • O45

    Premature separation of placenta [abruptio placentae]

    Abruptio placentae → O45.9-

    • 24 billable codes
    • 18 MCC
  • O46

    Antepartum hemorrhage, not elsewhere classified

    Hemorrhage, hemorrhagic (concealed)antepartum (with) → O46.90

    • 24 billable codes
    • 12 MCC
  • O47

    False labor

    Falselabor (pains) → O47.9

    • 5 billable codes
    • 3 CC
  • O48

    Late pregnancy

    Post-term (40-42 weeks) (pregnancy) (mother) → O48.0

    • 2 billable codes

Index main terms

  • Pregnancy (single) (uterine) → O30, O31, O32, O33, O34, O35, O36, O40, O41, O42, O43, O44, O45, O46, O47, O48 (252 entries)
  • Delivery (childbirth) (labor) → O32, O33, O34, O36, O42, O43, O44, O45 (134 entries)
  • Isoimmunization NEC → O36 (10 entries)
  • Previa → O44 (10 entries)
  • Hemorrhage, hemorrhagic (concealed) → O44, O45, O46 (9 entries)
  • Incompatibility → O36 (9 entries)
  • Abruptio placentae → O45 (7 entries)
  • Cesarean delivery, previous, affecting management of pregnancy → O34 (7 entries)
  • Cyst (colloid) (mucous) (simple) (retention) → O34, O41, O43 (5 entries)
  • Infection, infected, infective (opportunistic) → O35, O41 (5 entries)
  • Contraction(s), contracture, contracted → O33 (4 entries)
  • Breech presentation (mother) → O32 (3 entries)
  • Deformity → O33, O34 (3 entries)
  • False → O47 (3 entries)
  • Fibrosis, fibrotic → O34, O41 (3 entries)

+79 more main terms; the search box finds them by word.

Block instructions

Notes that also apply

Chapter 15 instructions (Notes 6, Excludes1 1, Excludes2 4, Use additional code 1): printed on the chapter 15 page.