O43 Placental disorders

Category / Non-billable header 64 subcodes

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

Excludes 2 (not included here)

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

Subcodes

Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.

Code Description Billable
O43..0 Placental transfusion syndromes No
O43..01 Fetomaternal placental transfusion syndrome No
O43..011 Fetomaternal placental transfusion syndrome, first trimester Yes
O43..012 Fetomaternal placental transfusion syndrome, second trimester Yes
O43..013 Fetomaternal placental transfusion syndrome, third trimester Yes
O43..019 Fetomaternal placental transfusion syndrome, unspecified trimester Yes
O43..02 Fetus-to-fetus placental transfusion syndrome No
O43..021 Fetus-to-fetus placental transfusion syndrome, first trimester Yes
O43..022 Fetus-to-fetus placental transfusion syndrome, second trimester Yes
O43..023 Fetus-to-fetus placental transfusion syndrome, third trimester Yes
O43..029 Fetus-to-fetus placental transfusion syndrome, unspecified trimester Yes
O43..1 Malformation of placenta No
O43..10 Malformation of placenta, unspecified No
O43..101 Malformation of placenta, unspecified, first trimester Yes
O43..102 Malformation of placenta, unspecified, second trimester Yes
O43..103 Malformation of placenta, unspecified, third trimester Yes
O43..109 Malformation of placenta, unspecified, unspecified trimester Yes
O43..11 Circumvallate placenta No
O43..111 Circumvallate placenta, first trimester Yes
O43..112 Circumvallate placenta, second trimester Yes
O43..113 Circumvallate placenta, third trimester Yes
O43..119 Circumvallate placenta, unspecified trimester Yes
O43..12 Velamentous insertion of umbilical cord No
O43..121 Velamentous insertion of umbilical cord, first trimester Yes
O43..122 Velamentous insertion of umbilical cord, second trimester Yes
O43..123 Velamentous insertion of umbilical cord, third trimester Yes
O43..129 Velamentous insertion of umbilical cord, unspecified trimester Yes
O43..19 Other malformation of placenta No
O43..191 Other malformation of placenta, first trimester Yes
O43..192 Other malformation of placenta, second trimester Yes
O43..193 Other malformation of placenta, third trimester Yes
O43..199 Other malformation of placenta, unspecified trimester Yes
O43..2 Morbidly adherent placenta No
O43..21 Placenta accreta No
O43..211 Placenta accreta, first trimester Yes
O43..212 Placenta accreta, second trimester Yes
O43..213 Placenta accreta, third trimester Yes
O43..219 Placenta accreta, unspecified trimester Yes
O43..22 Placenta increta No
O43..221 Placenta increta, first trimester Yes
O43..222 Placenta increta, second trimester Yes
O43..223 Placenta increta, third trimester Yes
O43..229 Placenta increta, unspecified trimester Yes
O43..23 Placenta percreta No
O43..231 Placenta percreta, first trimester Yes
O43..232 Placenta percreta, second trimester Yes
O43..233 Placenta percreta, third trimester Yes
O43..239 Placenta percreta, unspecified trimester Yes
O43..8 Other placental disorders No
O43..81 Placental infarction No
O43..811 Placental infarction, first trimester Yes
O43..812 Placental infarction, second trimester Yes
O43..813 Placental infarction, third trimester Yes
O43..819 Placental infarction, unspecified trimester Yes
O43..89 Other placental disorders No
O43..891 Other placental disorders, first trimester Yes
O43..892 Other placental disorders, second trimester Yes
O43..893 Other placental disorders, third trimester Yes
O43..899 Other placental disorders, unspecified trimester Yes
O43..9 Unspecified placental disorder No
O43..90 Unspecified placental disorder, unspecified trimester Yes
O43..91 Unspecified placental disorder, first trimester Yes
O43..92 Unspecified placental disorder, second trimester Yes
O43..93 Unspecified placental disorder, third trimester Yes

Last reviewed: September 2026