LOINC Code 11915-6: Gestational age estimated from Crown rump length on US by Yeh 1988 method

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 CRL.Yeh 1988

What it does not mean

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

Key facts

• Gestational age estimated from Crown rump length on US by Yeh 1988 method
• Gestational age
• Table 3 in this reference gives mean crown-rump length in mm for gestational ages 5 weeks and 3 days to 14 weeks and 0 days rather than estimating gestational age from crown rump length.
• 88; Crown-Rump Length; Echography; Est; estimation; Fetal; from CRL.Yeh88; 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; ULS; Ultrasound

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