LOINC Code 33145-4: Fetal Abdomen Circumference estimated from gestational age by method of Australian Society of Ultrasound Medicine 2000 (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 Perimeter. It is commonly used with the system or sample type Abdomen^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 ASUM 2000

What it does not mean

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

Key facts

• Fetal Abdomen Circumference estimated from gestational age by method of Australian Society of Ultrasound Medicine 2000 (US)
• Perimeter
• 00; Abd; Abd^Fetus; Abd+Fetus; Abdo; Abdomen+; Abdominal; Abdominal circumference; Abdominal circumference from gestational age; AC; AC by GA; AC(GA); Australian Society of Ultrasound Medicine; Circum; Circumference; Echography; Est; estimation; Fetal; from GA.ASUM00; Gyn; Gynecology; Length; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Point in time; predicted; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; ULS; Ultrasound; 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