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LOINC Code 77892-8: Left ventricular Ejection fraction by US.2D+Calculated by modified Simpson method

77892-8 is a LOINC code used to identify Left ventricular Ejection fraction by US.2D+Calculated by modified Simpson method 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 Ejection fraction. It is commonly used with the system or sample type Heart.ventricle.left.

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 Ejection fraction. It is commonly used with the system or sample type Heart.ventricle.left.

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.2D+Calculated by modified Simpson method

What it does not mean

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

Key facts

Left ventricular Ejection fraction by US.2D+Calculated by modified Simpson method
Ejection fraction
The modified Simpson method is commonly used for volume measurements in 2D cardiac imaging. It uses the biplane method of disks to measure left ventricular volume, meaning that the total volume is calculated by adding together the two-dimensional area measurements of the series of circular or elliptical slices that, taken as a whole, represent the ventricle. [PMID16376782] The volume measurements can then be used in calculations of other parameters related to cardiac function, including ejection fraction, cardiac output and cardiac index.
2D US; Calc; Calculation; CARD.US; Cardiac; Cardio; Cardiology; Echography; EF; Frac; Fract; Fractionation; Fractions; Heart Disease; Hrt; Hrt ventr; L; LT; LV; LVEF; Percent; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; ULS; Ultrasound; Ultrasound - 2-dimensional; US.2D+mod Simpson; Ventricular; Volfr; Volume fraction

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

Left ventricular Ejection fraction by US.2D+Calculated by modified Simpson methodLV EF US.2D+mod SimpsonEjection fractionCARD.USVFrPtHeart.ventricle.left

Frequently asked questions

Code details

Code77892-8
SystemLOINC
Display nameLeft ventricular Ejection fraction by US.2D+Calculated by modified Simpson method
DescriptionEjection fraction
Short nameLV EF US.2D+mod Simpson
ComponentEjection fraction
PropertyVFr
TimingPt
System (specimen)Heart.ventricle.left
ScaleQn
MethodUS.2D+Calculated by modified Simpson method
ClassCARD.US
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.52
Last changed2.52

Part names

Ejection fractionVFrPtHeart.ventricle.leftQnUS.2D+Calculated by modified Simpson methodVolume FractionPoint in time (spot)Heart ventricle - left

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.

LOINC Code 77892-8 | HealthAssure