| parent | OB.US | LP7830-5 |
| child | Activity | Fetus | OB ultrasound | LP416153-7 |
| child | Activity | Fetus | Limbs | OB ultrasound | LP416154-5 |
| child | Activity | Fetus | Respiratory system | OB ultrasound | LP416155-2 |
| child | Activity | Fetus | Trunk | OB ultrasound | LP416156-0 |
| STATUS | ACTIVE |
| PartDisplayName | en-US | Activity |
| DisplayName | en-US | Activity |
LOINC Version: 2.78