What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 55406-3: Left ventricular Cardiac ejection fraction method

Name: LOINC Code 55406-3: Left ventricular Cardiac ejection fraction method
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:37.765Z

55406-3 is a LOINC code used to identify Left ventricular Cardiac ejection fraction 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 Cardiac ejection fraction method. 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 Cardiac ejection fraction method. 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

What it does not mean

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

Key facts

Left ventricular Cardiac ejection fraction method
Cardiac ejection fraction method
Cardiac; Cardiac EF method; Cardio; Cardiology; EF; Frac; Fract; Fractionation; Fractions; Heart Disease; Hemodynamics; HEMODYNAMICS.MOLEC; Hrt; Hrt ventr; L; LT; LV; LVEF; Meth; Method of; Nominal; Point in time; Random; Typ; Ventricular

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 Cardiac ejection fraction methodLV Cardiac EF methodCardiac ejection fraction methodHEMODYN.MOLECTypePtHeart.ventricle.left

Frequently asked questions

Code details

Code55406-3

SystemLOINC

Display nameLeft ventricular Cardiac ejection fraction method

DescriptionCardiac ejection fraction method

Short nameLV Cardiac EF method

ComponentCardiac ejection fraction method

PropertyType

TimingPt

System (specimen)Heart.ventricle.left

ScaleNom

ClassHEMODYN.MOLEC

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.27

Last changed2.66

Part names

Cardiac ejection fraction methodTypePtHeart.ventricle.leftNomPoint 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.