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 80028-4: Left ventricular outflow tract Diameter at end diastole by US 2D

Name: LOINC Code 80028-4: Left ventricular outflow tract Diameter at end diastole by US 2D
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:01.839Z

80028-4 is a LOINC code used to identify Left ventricular outflow tract Diameter at end diastole by US 2D 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 Diameter.end diastole. It is commonly used with the system or sample type Heart.ventricle.left.outflow tract.

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 Diameter.end diastole. It is commonly used with the system or sample type Heart.ventricle.left.outflow tract.

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

What it does not mean

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

Key facts

Left ventricular outflow tract Diameter at end diastole by US 2D
Diameter.end diastole
2D US; CARD.US; CARD.US.DICOM; Cardiac; Cardio; Cardiology; DIA; Diam; Dias; Diast; Diastoli; Echography; ED; ED diameter; Heart Disease; Hrt; Hrt ventr; L; Length; LT; LV; LVOT; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; ULS; Ultrasound; Ultrasound - 2-dimensional; 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 outflow tract Diameter at end diastole by US 2DLVOT ED diameter 2D USDiameter.end diastoleCARD.US.DICOMLenPtHeart.ventricle.left.outflow tract

Frequently asked questions

Code details

Code80028-4

SystemLOINC

Display nameLeft ventricular outflow tract Diameter at end diastole by US 2D

DescriptionDiameter.end diastole

Short nameLVOT ED diameter 2D US

ComponentDiameter.end diastole

PropertyLen

TimingPt

System (specimen)Heart.ventricle.left.outflow tract

ScaleQn

MethodUS.2D

ClassCARD.US.DICOM

Example unitscm

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.54

Last changed2.54

Part names

Diameter.end diastoleLenPtHeart.ventricle.left.outflow tractQnUS.2DDiameter at end diastoleLengthPoint in time (spot)Heart ventricle Left outflow tractUltrasound 2D

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.