| 11933-9 | Gestational age estimated from Head circumference on US (hoffbauer 1979 method) | OB.US |
| 11934-7 | Gestational age estimated from Head circumference on US (jeanty 1984 method) | OB.US |
| 11935-4 | Gestational age estimated from Humerus length on US | OB.US |
| 11936-2 | Gestational age estimated from Humerus length on US (jeanty 1984 method) | OB.US |
| 11937-0 | Gestational age estimated from Humerus length on US (merz 1987 method) | OB.US |
| 11938-8 | Gestational age estimated from Radius length (US) | OB.US |
| 11939-6 | Gestational age estimated from Radius length (method of merz 1987 (us)) | OB.US |
| 1194-0 | little k Ag on Red Blood Cells from Donor (qualitative) | BLDBK |
| 11940-4 | Gestational age estimated from Tibia length on US | OB.US |
| 11941-2 | Gestational age estimated from Tibia length on US (jeanty 1984 method) | OB.US |
| 11942-0 | Gestational age estimated from Tibia length on US (merz 1987 method) | OB.US |
| 11943-8 | Gestational age estimated from Ulna length (US) | OB.US |
| 11944-6 | Gestational age estimated from Ulna length (method of jeanty 1984 (us)) | OB.US |
| 11945-3 | Gestational age estimated from Ulna length (method of merz 1987 (us)) | OB.US |
| 11946-1 | Fetal Placenta Grade US (qualitative) | OB.US |
| 11947-9 | Head circumference/Abdominal circumference derived (us) | OB.US |
| 11948-7 | Fetal Heart rate US | OB.US |
| 11949-5 | Fetal Identification criteria US | OB.US |
| 1195-7 | little k Ag on Red Blood Cells (qualitative) | BLDBK |
| 11950-3 | Fetal Narrative Identification criteria US | OB.US |
| 11951-1 | Fetal Identifier | OB.US |
| 11952-9 | Fetal Umbilical cord.placenta Narrative Insertion site US | OB.US |
| 11953-7 | OB ultrasound imaging device Institution inventory number | OB.US |
| 11954-5 | Fetal Kidney length/Abdominal circumference derived (us) | OB.US |
| 11955-2 | Last menstrual period | OB.US |
| 11956-0 | Fetal Head Lateral ventricular body width/Hemispheric width derived (us) | OB.US |
| 11957-8 | Fetal Crown Rump length US | OB.US |
| 11958-6 | Cervical canal palpation | OB.US |
| 11959-4 | Cervical canal US | OB.US |
| 1196-5 | Little NOS Ab from Blood product unit (qualitative) | BLDBK |
| 11960-2 | Cervix externally palpable surface palpation | OB.US |
| 11961-0 | Cervix US | OB.US |
| 11962-8 | Fetal Clavicle diaphysis US | OB.US |
| 11963-6 | Fetal Femur diaphysis US | OB.US |
| 11964-4 | Fetal Fibula diaphysis US | OB.US |
| 11965-1 | Fetal Foot US | OB.US |
| 11966-9 | Fetal Humerus diaphysis US | OB.US |
| 11967-7 | Fetal Radius diaphysis US | OB.US |
| 11968-5 | Fetal Tibia diaphysis US | OB.US |
| 11969-3 | Fetal Ulna diaphysis US | OB.US |
| 1197-3 | Little NOS Ab from Donor (qualitative) | BLDBK |
| 11970-1 | Fetal Femur diaphysis mean Estimated from gestational age.Merz. 1987 | OB.US |
| 11971-9 | Fetal Fibula diaphysis mean Estimated from gestational age.Merz. 1987 | OB.US |
| 11972-7 | Fetal Humerus diaphysis mean Estimated from gestational age.Merz. 1987 | OB.US |
| 11973-5 | Fetal Radius diaphysis mean Estimated from gestational age.Merz. 1987 | OB.US |
| 11974-3 | Fetal Tibia diaphysis mean Estimated from gestational age.Merz. 1987 | OB.US |
| 11975-0 | Fetal Ulna diaphysis mean Estimated from gestational age.Merz. 1987 | OB.US |
| 11976-8 | Ovulation date | OB.US |
| 11977-6 | Parity | OB.US |
| 11978-4 | Fetal Abdomen Circumference derived (us) | OB.US |