| CLASS | OB.US | LP7830-5 |
| COMPONENT | Head circumference/Abdominal circumference | LP286141-9 |
| PROPERTY | LenRto | LP6824-9 |
| TIME_ASPCT | Pt | LP6960-1 |
| SYSTEM | ^Fetus | LP310004-9 |
| SCALE_TYP | Qn | LP7753-9 |
| METHOD_TYP | US+Estimated from Campbell 1977 | LP204153-3 |
| parent | Clinical terms not yet categorized | LP248771-0 |
| CLASSTYPE | Clinical class | |
| ORDER_OBS | Both | |
| EXAMPLE_UNITS | ratio | |
| EXAMPLE_UCUM_UNITS | {ratio} |
| LONG_COMMON_NAME | en-US | Head circumference/Abdominal circumference US+Estimated from Campbell 1977 |
| LONG_COMMON_NAME | en-US | Head circumference/Abdominal circumference US+Estimated from Campbell 1977 |
| SHORTNAME | en-US | HC/AC from Campbell 1977 |
| LONG_COMMON_NAME | es-MX | Circunferencia de la cabeza / Circunferencia abdominal: Feto:Punto temporal:LenRto:Cuantitativo:US+Estimated from Campbell 1977 |
LOINC Version: 2.77
FHIR