ICD-10-CM category
O43 Placental disorders
O43 is a category, not a billable code. Report one of the 48 complete codes below.
O43.0…
8 codes
- O43.011Fetomaternal placental transfusion syndrome, first trimester
- O43.012Fetomaternal placental transfusion syndrome, second trimester
- O43.013Fetomaternal placental transfusion syndrome, third trimester
- O43.019Fetomaternal placental transfusion syndrome, unspecified trimester
- O43.021Fetus-to-fetus placental transfusion syndrome, first trimester
- O43.022Fetus-to-fetus placental transfusion syndrome, second trimester
- O43.023Fetus-to-fetus placental transfusion syndrome, third trimester
- O43.029Fetus-to-fetus placental transfusion syndrome, unspecified trimester
O43.1…
16 codes
- O43.101Malformation of placenta, unspecified, first trimester
- O43.102Malformation of placenta, unspecified, second trimester
- O43.103Malformation of placenta, unspecified, third trimester
- O43.109Malformation of placenta, unspecified, unspecified trimester
- O43.111Circumvallate placenta, first trimester
- O43.112Circumvallate placenta, second trimester
- O43.113Circumvallate placenta, third trimester
- O43.119Circumvallate placenta, unspecified trimester
- O43.121Velamentous insertion of umbilical cord, first trimester
- O43.122Velamentous insertion of umbilical cord, second trimester
- O43.123Velamentous insertion of umbilical cord, third trimester
- O43.129Velamentous insertion of umbilical cord, unspecified trimester
- O43.191Other malformation of placenta, first trimester
- O43.192Other malformation of placenta, second trimester
- O43.193Other malformation of placenta, third trimester
- O43.199Other malformation of placenta, unspecified trimester
O43.2…
12 codes
- O43.211Placenta accreta, first trimester
- O43.212Placenta accreta, second trimester
- O43.213Placenta accreta, third trimester
- O43.219Placenta accreta, unspecified trimester
- O43.221Placenta increta, first trimester
- O43.222Placenta increta, second trimester
- O43.223Placenta increta, third trimester
- O43.229Placenta increta, unspecified trimester
- O43.231Placenta percreta, first trimester
- O43.232Placenta percreta, second trimester
- O43.233Placenta percreta, third trimester
- O43.239Placenta percreta, unspecified trimester
O43.8…
8 codes
- O43.811Placental infarction, first trimester
- O43.812Placental infarction, second trimester
- O43.813Placental infarction, third trimester
- O43.819Placental infarction, unspecified trimester
- O43.891Other placental disorders, first trimester
- O43.892Other placental disorders, second trimester
- O43.893Other placental disorders, third trimester
- O43.899Other placental disorders, unspecified trimester
O43.9…
4 codes
Outside the US? O43 in the international WHO ICD-10 lists its inclusion and exclusion notes.
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ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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