ICD-10-CM category
O43: Placental disorders
Codes under O43 (Placental disorders). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| O43.0 | Placental transfusion syndromes | — |
| O43.0 | Placental transfusion syndromes | — |
| O43.01 | Fetomaternal placental transfusion syndrome | — |
| O43.01 | Fetomaternal placental transfusion syndrome | — |
| O43.1 | Malformation of placenta | — |
| O43.1 | Malformation of placenta | — |
| O43.02 | Fetus-to-fetus placental transfusion syndrome | — |
| O43.02 | Fetus-to-fetus placental transfusion syndrome | — |
| O43.2 | Morbidly adherent placenta | — |
| O43.2 | Morbidly adherent placenta | — |
| O43.8 | Other placental disorders | — |
| O43.8 | Other placental disorders | — |
| O43.9 | Unspecified placental disorder | — |
| O43.9 | Unspecified placental disorder | — |
| O43.10 | Malformation of placenta, unspecified | — |
| O43.10 | Malformation of placenta, unspecified | — |
| O43.011 | Fetomaternal placental transfusion syndrome, first trimester | ✓ |
| O43.011 | Fetomaternal placental transfusion syndrome, first trimester | ✓ |
| O43.11 | Circumvallate placenta | — |
| O43.11 | Circumvallate placenta | — |
| O43.012 | Fetomaternal placental transfusion syndrome, second trimester | ✓ |
| O43.012 | Fetomaternal placental transfusion syndrome, second trimester | ✓ |
| O43.12 | Velamentous insertion of umbilical cord | — |
| O43.12 | Velamentous insertion of umbilical cord | — |
| O43.013 | Fetomaternal placental transfusion syndrome, third trimester | ✓ |
| O43.013 | Fetomaternal placental transfusion syndrome, third trimester | ✓ |
| O43.019 | Fetomaternal placental transfusion syndrome, unspecified trimester | ✓ |
| O43.019 | Fetomaternal placental transfusion syndrome, unspecified trimester | ✓ |
| O43.19 | Other malformation of placenta | — |
| O43.19 | Other malformation of placenta | — |
| O43.021 | Fetus-to-fetus placental transfusion syndrome, first trimester | ✓ |
| O43.021 | Fetus-to-fetus placental transfusion syndrome, first trimester | ✓ |
| O43.21 | Placenta accreta | — |
| O43.21 | Placenta accreta | — |
| O43.022 | Fetus-to-fetus placental transfusion syndrome, second trimester | ✓ |
| O43.022 | Fetus-to-fetus placental transfusion syndrome, second trimester | ✓ |
| O43.22 | Placenta increta | — |
| O43.22 | Placenta increta | — |
| O43.023 | Fetus-to-fetus placental transfusion syndrome, third trimester | ✓ |
| O43.023 | Fetus-to-fetus placental transfusion syndrome, third trimester | ✓ |
| O43.23 | Placenta percreta | — |
| O43.23 | Placenta percreta | — |
| O43.029 | Fetus-to-fetus placental transfusion syndrome, unspecified trimester | ✓ |
| O43.029 | Fetus-to-fetus placental transfusion syndrome, unspecified trimester | ✓ |
| O43.81 | Placental infarction | — |
| O43.81 | Placental infarction | — |
| O43.89 | Other placental disorders | — |
| O43.89 | Other placental disorders | — |
| O43.90 | Unspecified placental disorder, unspecified trimester | ✓ |
| O43.90 | Unspecified placental disorder, unspecified trimester | ✓ |
| O43.91 | Unspecified placental disorder, first trimester | ✓ |
| O43.91 | Unspecified placental disorder, first trimester | ✓ |
| O43.92 | Unspecified placental disorder, second trimester | ✓ |
| O43.92 | Unspecified placental disorder, second trimester | ✓ |
| O43.93 | Unspecified placental disorder, third trimester | ✓ |
| O43.93 | Unspecified placental disorder, third trimester | ✓ |
| O43.101 | Malformation of placenta, unspecified, first trimester | ✓ |
| O43.101 | Malformation of placenta, unspecified, first trimester | ✓ |
| O43.102 | Malformation of placenta, unspecified, second trimester | ✓ |
| O43.102 | Malformation of placenta, unspecified, second trimester | ✓ |
| O43.103 | Malformation of placenta, unspecified, third trimester | ✓ |
| O43.103 | Malformation of placenta, unspecified, third trimester | ✓ |
| O43.109 | Malformation of placenta, unspecified, unspecified trimester | ✓ |
| O43.109 | Malformation of placenta, unspecified, unspecified trimester | ✓ |
| O43.111 | Circumvallate placenta, first trimester | ✓ |
| O43.111 | Circumvallate placenta, first trimester | ✓ |
| O43.112 | Circumvallate placenta, second trimester | ✓ |
| O43.112 | Circumvallate placenta, second trimester | ✓ |
| O43.113 | Circumvallate placenta, third trimester | ✓ |
| O43.113 | Circumvallate placenta, third trimester | ✓ |
| O43.119 | Circumvallate placenta, unspecified trimester | ✓ |
| O43.119 | Circumvallate placenta, unspecified trimester | ✓ |
| O43.121 | Velamentous insertion of umbilical cord, first trimester | ✓ |
| O43.121 | Velamentous insertion of umbilical cord, first trimester | ✓ |
| O43.122 | Velamentous insertion of umbilical cord, second trimester | ✓ |
| O43.122 | Velamentous insertion of umbilical cord, second trimester | ✓ |
| O43.123 | Velamentous insertion of umbilical cord, third trimester | ✓ |
| O43.123 | Velamentous insertion of umbilical cord, third trimester | ✓ |
| O43.129 | Velamentous insertion of umbilical cord, unspecified trimester | ✓ |
| O43.129 | Velamentous insertion of umbilical cord, unspecified trimester | ✓ |
| O43.191 | Other malformation of placenta, first trimester | ✓ |
| O43.191 | Other malformation of placenta, first trimester | ✓ |
| O43.192 | Other malformation of placenta, second trimester | ✓ |
| O43.192 | Other malformation of placenta, second trimester | ✓ |
| O43.193 | Other malformation of placenta, third trimester | ✓ |
| O43.193 | Other malformation of placenta, third trimester | ✓ |
| O43.199 | Other malformation of placenta, unspecified trimester | ✓ |
| O43.199 | Other malformation of placenta, unspecified trimester | ✓ |
| O43.211 | Placenta accreta, first trimester | ✓ |
| O43.211 | Placenta accreta, first trimester | ✓ |
| O43.212 | Placenta accreta, second trimester | ✓ |
| O43.212 | Placenta accreta, second trimester | ✓ |
| O43.213 | Placenta accreta, third trimester | ✓ |
| O43.213 | Placenta accreta, third trimester | ✓ |
| O43.219 | Placenta accreta, unspecified trimester | ✓ |
| O43.219 | Placenta accreta, unspecified trimester | ✓ |
| O43.221 | Placenta increta, first trimester | ✓ |
| O43.221 | Placenta increta, first trimester | ✓ |
| O43.222 | Placenta increta, second trimester | ✓ |
| O43.222 | Placenta increta, second trimester | ✓ |
| O43.223 | Placenta increta, third trimester | ✓ |
| O43.223 | Placenta increta, third trimester | ✓ |
| O43.229 | Placenta increta, unspecified trimester | ✓ |
| O43.229 | Placenta increta, unspecified trimester | ✓ |
| O43.231 | Placenta percreta, first trimester | ✓ |
| O43.231 | Placenta percreta, first trimester | ✓ |
| O43.232 | Placenta percreta, second trimester | ✓ |
| O43.232 | Placenta percreta, second trimester | ✓ |
| O43.233 | Placenta percreta, third trimester | ✓ |
| O43.233 | Placenta percreta, third trimester | ✓ |
| O43.239 | Placenta percreta, unspecified trimester | ✓ |
| O43.239 | Placenta percreta, unspecified trimester | ✓ |
| O43.811 | Placental infarction, first trimester | ✓ |
| O43.811 | Placental infarction, first trimester | ✓ |
| O43.812 | Placental infarction, second trimester | ✓ |
| O43.812 | Placental infarction, second trimester | ✓ |
| O43.813 | Placental infarction, third trimester | ✓ |
| O43.813 | Placental infarction, third trimester | ✓ |
| O43.819 | Placental infarction, unspecified trimester | ✓ |
| O43.819 | Placental infarction, unspecified trimester | ✓ |
| O43.891 | Other placental disorders, first trimester | ✓ |
| O43.891 | Other placental disorders, first trimester | ✓ |
| O43.892 | Other placental disorders, second trimester | ✓ |
| O43.892 | Other placental disorders, second trimester | ✓ |
| O43.893 | Other placental disorders, third trimester | ✓ |
| O43.893 | Other placental disorders, third trimester | ✓ |
| O43.899 | Other placental disorders, unspecified trimester | ✓ |
| O43.899 | Other placental disorders, unspecified trimester | ✓ |
Frequently asked questions
What is ICD-10-CM code O43?
O43 is an ICD-10-CM category covering Placental disorders. It contains 128 more specific diagnosis codes, 96 of which are billable.
Is O43 a billable code?
No — O43 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example O43.0 — Placental transfusion syndromes). 96 of the 128 codes under O43 are billable.
What codes fall under O43?
O43 includes O43.0, O43.0, O43.01, O43.01, O43.1, plus 123 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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