LOINC Code 11943-8: Gestational age estimated from Ulna length (US)

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Gestational age. It is commonly used with the system or sample type ^Fetus.

When is it used?

• Used in lab systems, EHRs, and clinical data exchange.
• May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
• Status: ACTIVE
• Order vs observation: Observation
• Method: US.estimated from ulna length

What it does not mean

• The code identifies the observation or test, not the actual result.

Key facts

• Gestational age estimated from Ulna length (US)
• Gestational age
• This term pertains only to the FETUS. Method Reference can be supplied by DICOM Supplement 23-Structured Reporting, Relationship Module (C.6.29).
• Echography; Est; estimation; Fetal; GA; Gest; Gestation; Gyn; Gynecology; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Point in time; predicted; Prenatal; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; Ulna chart; ULS; Ultrasound; Upper extremity; US+est

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Frequently asked questions