LOINC Code 11957-8: Fetal Crown Rump 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 Length.crown rump. 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.measured

What it does not mean

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

Key facts

• Fetal Crown Rump length US
• Length.crown rump
• Longest fetal length measurement made along the long axis of the fetus from the head (crown) to the bottom of the trunk (rump).
• AOEObservation; CRL; Echography; Fetal; Gyn; Gynecology; Len; Length; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; ULS; Ultrasound; US+Meas

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