Table 3.
In the retrospective 5-year validation study (May 1, 2012, to April 30, 2017), 23/30 unknown causes of stillbirth can be assigned a diagnosis category after applying ICD-PM code.
| Case number | Original codes | Remarks | ICD-PMa codes |
| 3 | Unknown | Funisitis, GDMb | A2; M1 |
| 8 | Unknown | Maternal hypothyroidism | A6; M4 |
| 14 | Unknown | History of deep vein thrombosis, placental histopathology: fetal thrombotic vasculopathy and placenta infarction | A3; M1 |
| 23 | Unknown | 480 g at 28+ weeks, GDM | A6; M4 |
| 28 | Unknown | 375 g at 24+ weeks, placenta: thrombotic vasculopathy | A5; M1 |
| 32 | Unknown | Placenta: focal fetal thrombotic vasculopathy | A6; M1 |
| 39 | Unknown | GDM | A6; M4 |
| 48 | Unknown | GDM | A6; M4 |
| 50 | Unknown | 2520 g at 39 weeks; placenta: thrombotic vasculopathy | A5; M1 |
| 55 | Unknown | 400 g at 25 weeks; severe oligohydramnios | A5; M2 |
| 57 | Unknown | Preeclampsia, DMc in pregnancy | A6; M4 |
| 58 | Unknown | Polyhydramnios | A6; M2 |
| 59 | Unknown | 250 g at 25 weeks; twisted cord | A5; M1 |
| 60 | Unknown | 255 g at 24 weeks; GDM | A5; M4 |
| 61 | Unknown | 330 g at 24 weeks; GDM | A5; M4 |
| 62 | Unknown | Breech presentation | A6; M3 |
| 65 | Unknown | Twin pregnancy | A6; M2 |
| 66 | Unknown | Twin pregnancy | A6; M2 |
| 72 | Unknown | Placenta: chorioamnionitis (Escherichia coli); fetal thrombotic vasculopathy | A2; M1 |
| 73 | Unknown | Placenta: fetal thrombotic vasculopathy | A6; M1 |
| 74 | Unknown | Oligohydramnios | A6; M2 |
| 80 | Unknown | Maternal infection with fever; placenta: focal intervillous thrombus | A2; M1 |
| 85 | Unknown | Placenta: minor infarcted villi | A6; M1 |
aICD-PM: International Classification of Diseases for Perinatal Mortality.
bGDM: gestational diabetes mellitus.
cDM: diabetes mellitus.