O43 — Placental disorders
Is O43 billable?
No — O43 is a non-billable header code. O43 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 48 billable codes beneath O43.
Billable codes under this header
- O43.90Unspecified placental disorder, unspecified trimester
- O43.91Unspecified placental disorder, first trimester
- O43.92Unspecified placental disorder, second trimester
- O43.93Unspecified placental disorder, third trimester
- 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
- O43.101Malformation 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
- O43.211Placenta 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
- O43.811Placental 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 at a glance
| Code | O43 |
|---|---|
| Description | Placental disorders |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes2 — not included here
The conditions below are not part of O43, but a patient may have both at the same time. When documentation supports it, O43 and the excluded code may both be reported.
Excludes1 — never code together — inherited from Chapter 15
The conditions below can never be reported together with O43 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- supervision of normal pregnancy (Z34.-)
Use additional code — inherited from Chapter 15
Report an additional code alongside O43 to fully describe the condition. O43 is sequenced first.
- code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
Excludes2 — not included here — inherited from Chapter 15
The conditions below are not part of O43, but a patient may have both at the same time. When documentation supports it, O43 and the excluded code may both be reported.
What codes fall under O43? (5)
How long has O43 existed?
O43 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.