LOINCActiveObservation

LOINC Code 11775-4: Fetal body weight estimation formula Narrative [Bibliographic Citation] Citation

11775-4 is a LOINC code used to identify Fetal body weight estimation formula Narrative [Bibliographic Citation] Citation in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Citation. It is commonly used with the system or sample type Fetal body weight estimation formula.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

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 Citation. It is commonly used with the system or sample type Fetal body weight estimation formula.

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

What it does not mean

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

Key facts

  • Fetal body weight estimation formula Narrative [Bibliographic Citation] Citation
  • Citation
  • Provides a bibliographic citation for the measurement used. Not needed if a specific citation is a part of the measurement definition.
  • Bibliographic citation; bod; Bodies; EFW formula; Gyn; Gynecology; Narrative; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Point in time; Random; Report

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

Fetal body weight estimation formula Narrative [Bibliographic Citation] CitationEFW formula CitationCitationOB.USBibPtFetal body weight estimation formula

Frequently asked questions

Code details

Code11775-4
SystemLOINC
Display nameFetal body weight estimation formula Narrative [Bibliographic Citation] Citation
DescriptionCitation
Short nameEFW formula Citation
ComponentCitation
PropertyBib
TimingPt
System (specimen)Fetal body weight estimation formula
ScaleNar
ClassOB.US
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0j-a
Last changed2.73

Part names

CitationBibPtFetal body weight estimation formulaNarBibliographic CitationPoint in time (spot)

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.